<figure><img src="image_19.png" /><figcaption>FIGURE 15. Known distribution *Alyxia pseudoserpentina* (dots) and *Alyxia rosmarinifolia* (squares). Symbols with “T” represent type specimens. Grayed areas represent ultramafic substrates.</figcaption></figure>

**Specimens examined:**—NEW CALEDONIA; South Province; Mont Do, elev. 950 m, 21°45'28"S, 166°0'06"E, 20 April 2021, *Lannuzel 431* (NOU108249!); Crête sommet Mt. Do, elev. 900 m, 28 November 1966, *MacKee 15975* (L.2699553!, MO1114544!, NOU058322!, P04225751!); Mt. Do, elev. 900 m, 23 March 1977, *MacKee 32938* (NOU058325!, P04225542!); Mont Do, elev. 800 m, 21 October 1975, *Sévenet 1075* (NOU058320!, NOU058321!, P04225557!, P04225558!); Mont Do, elev. 800–1000 m, 28 November 1966, *Veillon 941* (L.3729837!, NOU058324!, P04220405!).

*Alyxia spathulata* Guillaumin (1957: 80). Lectotype (designated by Boiteau (1981:121):—NEW CALEDONIA, Ile des Pins, *Germain s.n.* : P [P00072149!]; isolectotype P [P00625016!] (Figs. 16, 18)

**Species circumscription:**—*Alyxia spathulata* was considered as a distinct species by Boiteau (1981) and then as a synonym of *A. tisserantii* by Middleton (2002). While narrowing the concept of *A. tisserantii*, we choose to follow Boiteau and consider *A. spathulata* as a species readily distinguishable by its smaller oblong to spathulate leaves (1.3–2.1 cm), short corolla tube (0.7–1.6 mm), and blackish bark. Further, all specimens come from the Pic N’Ga hill, on the Isle of Pines, where no *A. tisserantii* specimen is found, and where all specimens are very stable in leaf and fruit shapes.

**Distribution and habitat:**—*A. spathulata* is only known from Pic N’Ga, on the Isle of Pines. It grows at low altitude (50–150 m elev.) in shrublands on ultramafic substrates.

**Phenology:**—From herbarium specimens and pictures, flowers of *A. spathulata* can be seen in January and June. Fruits are known from May to November.

**Specimens examined:**—NEW CALEDONIA; South Province; Ile des Pins: Pic N'Ga, 26 May 1951, *Baumann-Bodenheim 13487* (L.3735043!, P04236779!, US2316656!); Pic N'Ga, Ile des Pins, 26 May 1951, *Baumann-Bodenheim 13499* (L.3735052!, P04236780!, US2316658!); Pic N'Ga (Ile des Pins), 26 May 1951, *Baumann-Bodenheim 13503* (L.3735042!, P04236781!, US2316659!); Ile des Pins: Pic Nga, 29 May 1951, *Baumann-Bodenheim 13677* (P04236783!); Pic N'Ga, Ile des Pins, 29 May 1951, *Baumann-Bodenheim 13681* (L.3735036!, P04236782!,
US2316667!); Pic Nga, 29 May 1951, *Baumann-Bodenheim 13689* (P00156846!, US2316668!image); Ile des Pins, Pic N'Ga, 29 May 1951, *Baumann-Bodenheim 13731* (P04236777!); Ile des Pins (Kunié), Pic Nga, elev. 150 m, 18 July 1965, *Bernardi 10051* (L.2702448!, P04236796!); Ile des Pins, *Germain s.n.* (P00072149!, P00625016!); Ile des Pins: sommet du Pic N'Ga, 27 July 1980, *Hoff 2467* (NOU058264!); Ile des Pins: Pic Nga, 25 November 1977, *Jaffré 2082* (NOU058266!, P04236769!, P05236823!); Ile des Pins: Pic Nga, 25 November 1977, *Jaffré 2084* (NOU058267!, P04236803!); Ile des Pins: Mt. Nga, elev. 100 m, 5 August 1956, *MacKee 5027* (P04236778!); Ile des Pins: Mt. Nga, elev. 100 m, 05 August 1956, *MacKee 5028* (P04226193!, L.2702444!); Ile des Pins: Pic Nga, elev. 150 m, 18 July 1965, *MacKee 13101* (P04236795!, P04236799!); Ile des Pins: Plateau Méréque, elev. 50 m, 7 June 1966, *MacKee 15060* (L.3729842!, P04236801!); Ile des Pins: Pic Nga, elev. 50 m, 14 October 1966, *MacKee 15823* (P04236800!); Pic N'Ga, 23 November 1977, *Morat 5731* (NOU058195!, P04226212!); Pic N'Ga, 23 November 1977, *Morat 5743* (NOU058196!, P04226211!, P04551308!); Ile des Pins: Pic Nga, 9 June 1967, *Schmid 2058* (NOU058316!, P04236798!); Ile des Pins: Pic Nga, 9 June 1967, *Schmid 2059* (NOU058317!, P04226206!); Ile des Pins: Pic Nga, 9 June 1967, *Schmid 2060* (NOU058318!, P04236797!); Ile des Pins: Pic Nga, 9 June 1967, *Schmid 2061* (NOU058265!); Ile des Pins: plateau, 9 September 1975, *Sévenet 1050* (NOU058315!); versants du Pic N'ga (île des Pins), elev. 50 m, 1 March 1943, *Virot 1077* (P04236775!).

<figure><img src="image_24.png" /><figcaption>**FIGURE 16.** *Alyxia spathulata* with detail of an immature fruit (A), flowers (B), a fertile branch (C), and habit (D). Photographers: A, C & D: B. Henry, B: C. Laudereau.</figcaption></figure>

<figure><img src="image_25.png" /></figure>
US2316667!); Pic Nga, 29 May 1951, *Baumann-Bodenheim 13689* (P00156846!, US2316668!image); Ile des Pins, Pic N'Ga, 29 May 1951, *Baumann-Bodenheim 13731* (P04236777!); Ile des Pins (Kunié), Pic Nga, elev. 150 m, 18 July 1965, *Bernardi 10051* (L.2702448!, P04236796!); Ile des Pins, *Germain s.n.* (P00072149!, P00625016!); Ile des Pins: sommet du Pic N'Ga, 27 July 1980, *Hoff 2467* (NOU058264!); Ile des Pins: Pic Nga, 25 November 1977, *Jaffré 2082* (NOU058266!, P04236769!, P05236823!); Ile des Pins: Pic Nga, 25 November 1977, *Jaffré 2084* (NOU058267!, P04236803!); Ile des Pins: Mt. Nga, elev. 100 m, 5 August 1956, *MacKee 5027* (P04236778!); Ile des Pins: Mt. Nga, elev. 100 m, 05 August 1956, *MacKee 5028* (P04226193!, L.2702444!); Ile des Pins: Pic Nga, elev. 150 m, 18 July 1965, *MacKee 13101* (P04236795!, P04236799!); Ile des Pins: Plateau Méréque, elev. 50 m, 7 June 1966, *MacKee 15060* (L.3729842!, P04236801!); Ile des Pins: Pic Nga, elev. 50 m, 14 October 1966, *MacKee 15823* (P04236800!); Pic N'Ga, 23 November 1977, *Morat 5731* (NOU058195!, P04226212!); Pic N'Ga, 23 November 1977, *Morat 5743* (NOU058196!, P04226211!, P04551308!); Ile des Pins: Pic Nga, 9 June 1967, *Schmid 2058* (NOU058316!, P04236798!); Ile des Pins: Pic Nga, 9 June 1967, *Schmid 2059* (NOU058317!, P04226206!); Ile des Pins: Pic Nga, 9 June 1967, *Schmid 2060* (NOU058318!, P04236797!); Ile des Pins: Pic Nga, 9 June 1967, *Schmid 2061* (NOU058265!); Ile des Pins: plateau, 9 September 1975, *Sévenet 1050* (NOU058315!); versants du Pic N'ga (île des Pins), elev. 50 m, 1 March 1943, *Virot 1077* (P04236775!).

<figure><img src="image_20.png" /><figcaption>**FIGURE 16.** *Alyxia spathulata* with detail of an immature fruit (A), flowers (B), a fertile branch (C), and habit (D). Photographers: A, C & D: B. Henry, B: C. Laudereau.</figcaption></figure>

<figure><img src="image_21.png" /></figure>
*Alyxia tisserantii Montrouzier* (1860: 233). Neotype (designated by Middleton (2002: 66):—NEW CALEDONIA, Ile Art: Plateau Nord, elev. 200 m, 10 December 1975, *MacKee 30500*: L [L 26699537!]; isotype: K, NOU [NOU058172!]; P [P04260837!] (Figs. 17, 18)

= *Alyxia affinis* Van Heurck & Müller Argoviensis (1871: 193). Holotype:—NEW CALEDONIA, Gatope, *Vieillard 958*: AWH [AWH12555284!]; isotype: P [P00143134; P00143135]. *Pulassarium affine* (Van Heurck & Müller.Arg.) Kuntze (1891: 417).

= *Alyxia breviflora* Van Heurck & Müller Argoviensis (1871: 195). Holotype:—NEW CALEDONIA, Gatope, *Vieillard 952*: AWH [AWH12555291!]; isotypes: BM [BM000508454!], K [K000894169!], P [P00156867!; P00156868!]. *Pulassarium breviflorum* (Van Heurck & Müller.Arg.) Kuntze (1891: 417).

= *Alyxia discolor* Boiteau (1979: 449). Holotype:—NEW CALEDONIA, embouchure du Dothio, December 1871, *Balansa 3473*: P [P00072134!]; isotypes: A [A00054887!]; P [P00072135!]; Z [Z-000000950!].

= *Alyxia disphaerocarpa* Van Heurck & Müll. in Müller Argoviensis (1870: 169). Lectotype (designated here):—NEW CALEDONIA, Pum [Poum] Tanlé, Deplanche [*Vieillard 951*]: AWH [AWH12555253!—lower left hand plant]; isolectotypes (see notes): G [G00169235!, G00169234!—left hand plant], L [L004696!, L0064516!—upper plant], NY [NY345469!—right hand specimen], K [K000894170!—lower right hand plant], P [P00156872!—left hand plant, P00156874!—left hand upper and lower plants], W [W 1889-0036663—left hand plant], Z [Z-000000949!]. *Pulassarium disphaerocarpum* (Van Heurck & Müller.Arg.) Kuntze (1891: 417).

= *Alyxia microbuxus* (Baill.) Guillaumin (1941: 366). *Gynopogon microbuxus* Baillon (1889: 776). Lectotype (designated by Boiteau (1981: 124):—NEW CALEDONIA, 1862, *Pancher s.n.*: P [P00072142!].

**Species circumscription:**—*Alyxia tisserantii* is most similar to *Alyxia dolioliflora* by its reddish bark and sometimes almost linear leaves, but differs by fruits composed of several (2 to 4–6) spherical articles, 3.7–5 × 3.7–4.4 mm vs fruits composed of 1–2 ovoid articles 8–9.5 × 4.7–6.5 mm. It is also close to *A. pseudoserpentina* by the general morphology and habit, as well as leaf shape. However, it differs by longer peduncles (4.2–12 mm vs 0.5–4.1 mm in *A. pseudoserpentina*) and a shorter corolla tube of 1.1–2.2 mm, almost equal to the corolla lobes, while *A. pseudoserpentina* has the corolla tube almost twice the length of the lobes. *A. pseudoserpentina* is also different by its grayish bark and prominent nodes.

**Distribution and habitat:**—The species is widely distributed on ultramafic substrates on Grande Terre, from Belep islands to the South of Grande Terre. It grows mainly in shrublands from low to high altitude (10–1000 m elev.).

**Phenology:**—From herbarium specimens and picture available, the species flowers and fructifies all year round.

**Notes:**—**Typification of Alyxia affinis.** The specimen P04220365 is not considered as belonging to the type material because it is said to be collected in Nouméa. P04220363 labeled as *Vieillard 958* is most probably a Pancher specimen numbered by Pancher according to "Vieillard's species n° 958". The specimen BM000508400 is a flowering one (the other original type materials are fruiting ones), most probably collected by Pancher and without locality, so it can be discarded from type material. The K (K000894168) specimen should also be rejected from the type material because it was treated at Caen herbarium (CN) by Lenormand, who is known to have mixed specimens and labels. This specimen actually belongs to *A. celastrinea*.

**Typification of Alyxia breviflora.** There are several specimens labeled as *Vieillard 952* in numerous herbaria. At P, three (P04220382, P04220384, P04220385) were collected in Balade during the period 1855–1860 (as against "Gatope 1861–1867" for the AWH specimen) so they are not types. P04260777 was originally labeled *Vieillard 952* from Gatope and a second label most probably added by Lenormand in Caen says it is from Balade so this specimen could be considered as an isolectotype. P00156868's label (probably not Vieillard's handwriting) does not say it is a Vieillard specimen collected in 1861–1867 but is congruent (phenology, shape of the leaves, state of drying) with the lectotype and is most probably an isolectotype. P00156867, K000894169 and the BM specimen also match the protologue and can be considered as isolectotypes.

**Typification of *A. disphaerocarpa*.** In the initial protologue van Heurck and Müller Argoviensis (1870) described *A. disphaerocarpa* from *Vieillard 951* in New Caledonia but they (van Heurck and Müller Argoviensis 1871) later refined the locality as "Pum et Tanlé" in their own herbarium. Middleton (2002: 70) recognized AWH12555253 was a mixed specimen with several plants on it and chose the holotype as probably being only the lower left-hand branch. We agree with Middleton but because it is a mixed specimen it should be lectotypified. The lower left-hand branch is preferred because it is the only one with fruits so it most closely matches epithet's name. Here, it is important to note that this branch bears a Deplanche 1861–67 label numbered "951 Vieill. (205 Depl.?)" from "Pum, Tanlé" while the other label is a Vieillard one from Gatope numbered 2968. And to the best of our knowledge, only Deplanche has visited
*Alyxia tisserantii Montrouzier* (1860: 233). Neotype (designated by Middleton (2002: 66):—NEW CALEDONIA, Ile Art: Plateau Nord, elev. 200 m, 10 December 1975, *MacKee 30500*: L [L 26699537!]; isotype: K, NOU [NOU058172!]; P [P04260837!] (Figs. 17, 18)

= *Alyxia affinis* Van Heurck & Müller Argoviensis (1871: 193). Holotype:—NEW CALEDONIA, Gatope, *Vieillard 958*: AWH [AWH12555284!]; isotype: P [P00143134; P00143135]. *Pulassarium affine* (Van Heurck & Müller.Arg.) Kuntze (1891: 417).

= *Alyxia breviflora* Van Heurck & Müller Argoviensis (1871: 195). Holotype:—NEW CALEDONIA, Gatope, *Vieillard 952*: AWH [AWH12555291!]; isotypes: BM [BM000508454!], K [K000894169!], P [P00156867!; P00156868!]. *Pulassarium breviflorum* (Van Heurck & Müller.Arg.) Kuntze (1891: 417).

= *Alyxia discolor* Boiteau (1979: 449). Holotype:—NEW CALEDONIA, embouchure du Dothio, December 1871, *Balansa 3473*: P [P00072134!]; isotypes: A [A00054887!]; P [P00072135!]; Z [Z-000000950!].

= *Alyxia disphaerocarpa* Van Heurck & Müll. in Müller Argoviensis (1870: 169). Lectotype (designated here):—NEW CALEDONIA, Pum [Poum] Tanlé, Deplanche [*Vieillard 951*]: AWH [AWH12555253!—lower left hand plant]; isolectotypes (see notes): G [G00169235!, G00169234!—left hand plant], L [L004696!, L0064516!—upper plant], NY [NY345469!—right hand specimen], K [K000894170!—lower right hand plant], P [P00156872!—left hand plant, P00156874!—left hand upper and lower plants], W [W 1889-0036663—left hand plant], Z [Z-000000949!]. *Pulassarium disphaerocarpum* (Van Heurck & Müller.Arg.) Kuntze (1891: 417).

= *Alyxia microbuxus* (Baill.) Guillaumin (1941: 366). *Gynopogon microbuxus* Baillon (1889: 776). Lectotype (designated by Boiteau (1981: 124):—NEW CALEDONIA, 1862, *Pancher s.n.*: P [P00072142!].

**Species circumscription:**—*Alyxia tisserantii* is most similar to *Alyxia dolioliflora* by its reddish bark and sometimes almost linear leaves, but differs by fruits composed of several (2 to 4–6) spherical articles, 3.7–5 × 3.7–4.4 mm vs fruits composed of 1–2 ovoid articles 8–9.5 × 4.7–6.5 mm. It is also close to *A. pseudoserpentina* by the general morphology and habit, as well as leaf shape. However, it differs by longer peduncles (4.2–12 mm vs 0.5–4.1 mm in *A. pseudoserpentina*) and a shorter corolla tube of 1.1–2.2 mm, almost equal to the corolla lobes, while *A. pseudoserpentina* has the corolla tube almost twice the length of the lobes. *A. pseudoserpentina* is also different by its grayish bark and prominent nodes.

**Distribution and habitat:**—The species is widely distributed on ultramafic substrates on Grande Terre, from Belep islands to the South of Grande Terre. It grows mainly in shrublands from low to high altitude (10–1000 m elev.).

**Phenology:**—From herbarium specimens and picture available, the species flowers and fructifies all year round.

**Notes:**—**Typification of Alyxia affinis.** The specimen P04220365 is not considered as belonging to the type material because it is said to be collected in Nouméa. P04220363 labeled as *Vieillard 958* is most probably a Pancher specimen numbered by Pancher according to "Vieillard's species n° 958". The specimen BM000508400 is a flowering one (the other original type materials are fruiting ones), most probably collected by Pancher and without locality, so it can be discarded from type material. The K (K000894168) specimen should also be rejected from the type material because it was treated at Caen herbarium (CN) by Lenormand, who is known to have mixed specimens and labels. This specimen actually belongs to *A. celastrinea*.

**Typification of Alyxia breviflora.** There are several specimens labeled as *Vieillard 952* in numerous herbaria. At P, three (P04220382, P04220384, P04220385) were collected in Balade during the period 1855–1860 (as against "Gatope 1861–1867" for the AWH specimen) so they are not types. P04260777 was originally labeled *Vieillard 952* from Gatope and a second label most probably added by Lenormand in Caen says it is from Balade so this specimen could be considered as an isolectotype. P00156868's label (probably not Vieillard's handwriting) does not say it is a Vieillard specimen collected in 1861–1867 but is congruent (phenology, shape of the leaves, state of drying) with the lectotype and is most probably an isolectotype. P00156867, K000894169 and the BM specimen also match the protologue and can be considered as isolectotypes.

**Typification of *A. disphaerocarpa*.** In the initial protologue van Heurck and Müller Argoviensis (1870) described *A. disphaerocarpa* from *Vieillard 951* in New Caledonia but they (van Heurck and Müller Argoviensis 1871) later refined the locality as "Pum et Tanlé" in their own herbarium. Middleton (2002: 70) recognized AWH12555253 was a mixed specimen with several plants on it and chose the holotype as probably being only the lower left-hand branch. We agree with Middleton but because it is a mixed specimen it should be lectotypified. The lower left-hand branch is preferred because it is the only one with fruits so it most closely matches epithet's name. Here, it is important to note that this branch bears a Deplanche 1861–67 label numbered "951 Vieill. (205 Depl.?)" from "Pum, Tanlé" while the other label is a Vieillard one from Gatope numbered 2968. And to the best of our knowledge, only Deplanche has visited
Tanlé islet. In our opinion, the lectotype is therefore a Deplanche specimen he numbered according to "Vieillard n°951 species". Middleton (2002) also found numerous isotypes in many herbaria (A, BR, G, K, L, NY, P, W, Z). Among the ones to which we had access, L0004669, the top sterile branch of L0064516, the two branches on the left hand of P00156874, the right hand branch of A00054882, the two fruiting branches on the left hand of G00169234, G00169235 (collected in 1868), the left hand branch of W 1889-003666 and Z-000000949 could reasonably be considered as isolectotypes. BR0000006956394, G00169233, K000864171, NY 00345468, NY 00345469, P00156869, P00156870, P00156871, P00156872, P00156873 are not considered as isolectotypes because either they are Vieillard or Mus. Néocal. specimens, sterile, bear flowers, have narrower leaves or a different state of drying. P00156875 [Musée Néo. Cal. 116 (Vieillard 951 and Deplanche205 ?)] is probably not a Deplanche specimen and not dated 1861-1867.

<figure><img src="image_26.png" /><figcaption>**FIGURE 17.** *Alyxia tisserantii* with detail of an immature fruit (A), flowers (B), habit (C), and flowering branches (D). Photographer: G. Lannuzel, A & C from Taom, C & D from Poum.</figcaption></figure>
Tanlé islet. In our opinion, the lectotype is therefore a Deplanche specimen he numbered according to "Vieillard n°951 species". Middleton (2002) also found numerous isotypes in many herbaria (A, BR, G, K, L, NY, P, W, Z). Among the ones to which we had access, L0004669, the top sterile branch of L0064516, the two branches on the left hand of P00156874, the right hand branch of A00054882, the two fruiting branches on the left hand of G00169234, G00169235 (collected in 1868), the left hand branch of W 1889-003666 and Z-000000949 could reasonably be considered as isolectotypes. BR0000006956394, G00169233, K000864171, NY 00345468, NY 00345469, P00156869, P00156870, P00156871, P00156872, P00156873 are not considered as isolectotypes because either they are Vieillard or Mus. Néocal. specimens, sterile, bear flowers, have narrower leaves or a different state of drying. P00156875 [Musée Néo. Cal. 116 (Vieillard 951 and Deplanche205 ?)] is probably not a Deplanche specimen and not dated 1861-1867.

<figure><img src="image_22.png" /><figcaption>**FIGURE 17.** *Alyxia tisserantii* with detail of an immature fruit (A), flowers (B), habit (C), and flowering branches (D). Photographer: G. Lannuzel, A & C from Taom, C & D from Poum.</figcaption></figure>
<figure><img src="image_27.png" /><figcaption>FIGURE 18. Known distribution of *Alyxia spathulata* (dots) and *Alyxia tisserantii* (squares). Symbols with “T” represent type specimens. Grayed areas represent ultramafic substrates.</figcaption></figure>

Specimens examined:—NEW CALEDONIA; North Province; À L'Embouchure de la Rivière D'Ouaïlou, *Balansa* 2432 (P04225795!, P04225796!, P04225799!, P04236805!); Canala, 1 November 1869, *Balansa* 2432a (P04260835!, P04260838!, P04260839!); Mt. Koniambo, 21 December 1950, *Baumann-Bodenheim & Guillaumin* 9500 (L.3735044!, P04225734!); Dôme de la Tiébaghi, elev. 600 m, 17 August 1965, *Bernardi* 10293 (L.2699513!, P04225773!); Col d'Amos, elev. 150 m, 18 August 1965, *Bernardi* 10335 (L.2699512!, P04225774!); Poro, 27 October 1977, *Bourret* 1380 (NOU058159!); Néaria, elev. 100 m, March 1901, *Cribs* 1208 (P04225763!, P04225764!); Pouembout, conservatoire botanique de Tiéa, 3 August 2000, *Dagostini* 181 (NOU058337!); Méré, Poro-Kouaoua, 3 September 2003, *Dagostini* 720 (NOU001275!); Baie d'Urville, 1 May 1869, *Delacours.n.* (P04225766!, P05236785!); *s.l.*, 1861, *Deplanche* 205 (P04225770!, P04226185!); Gatope, 1861, *Deplanche* 429 [*Vieillard* 2969] (P04220357!); Ile Art, elev. 200 m, 19°41'58"S, 163°38'42"E, 25 April 2017, *Gâteblé* 857 (NOU105131!); Ile Art, elev. 200 m, 19°41'58"S, 163°38'42"E, 25 April 2017, *Gâteblé* 870 (NOU105117!); *s.l.*, *Godefroy s.n.* (L.2699541!); Ouest du Dôme de Tiébaghi, 9 November 1980, *Hoff* 3128 (NOU058236!, P04225721!); (Haute Tipindjé) vallée de la Paoué, elev. 500 m, 13 April 1951, *Hürlimann* 1165 (P04225729!); Mt. Poudéhoume, elev. 180 m, 23 July 1951, *Hürlimann* 1624 (P04225730!, US2316431!); Région de Poro, Mine «Cyclone», elev. 250 m, 6 May 1969, *Jaffré* 223 (NOU058314!, P04236832!); Dôme de Tiébaghi, elev. 350 m, 15 October 1975, *Jaffré* 1384 (NOU058319!, P04260834!); Ile Art: plateau Nord, 9 December 1975, *Jaffré* 1545 (NOU058188!, P04260776!); Ile Art: plateau Nord, 9 December 1975, *Jaffré* 1558 (NOU058187!, P04260775!); Ile Art: plateau Nord, 10 December 1975, *Jaffré* 1664 (NOU058174!, P04260779!); Tiébaghi, 6 May 1978, *Jaffré* 2471 (NOU058200!); Troulala, elev. 160 m, 20°37'53"S, 164°22'22"E, 9 January 2018, *Lannuzel* 128 (NOU089019!); *s.l.*, *Le Rat* 773 (P04260773!); Paagouène, elev. 50 m, 12 November 1965, *MacKee* 13887 (P04225755!); Montagne de Poum, elev. 380 m, 11 May 1966, *MacKee* 14987 (NOU058243!, P04226202!, P05236765!, US3669592!image); Sommet Nord du Mt Kaala, elev. 1000 m, 25 December 1966, *MacKee* 16127 (P04225817!); Paagouène, elev. 5 m, 20 April 1967, *MacKee* 16603 (P04225815!); Pente Ouest du Mt Ouazangou, elev. 100 m, 19 June 1967, *MacKee* 16935 (L.2699554!, NOU058175!, P04236807!); Houaïlou - Cap Bocage, elev. 150 m, 1 May 1968, *MacKee* 18753 (L.3729839!, NOU058246!, P04236785!); Houaïlou, presqu'île de Ba, elev. 200 m, 24 September 1969, *MacKee* 20866 (L.3729840!, L.3729841!, NOU058255!, P04236784!); Taom Mt
<figure><img src="image_23.png" /></figure>

**FIGURE 18.** Known distribution of *Alyxia spathulata* (dots) and *Alyxia tisserantii* (squares). Symbols with “T” represent type specimens. Grayed areas represent ultramafic substrates.

Specimens examined:—NEW CALEDONIA; North Province; À L'Embouchure de la Rivière D'Ouaïlou, *Balansa* 2432 (P04225795!, P04225796!, P04225799!, P04236805!); Canala, 1 November 1869, *Balansa* 2432a (P04260835!, P04260838!, P04260839!); Mt. Koniambo, 21 December 1950, *Baumann-Bodenheim & Guillaumin* 9500 (L.3735044!, P04225734!); Dôme de la Tiébaghi, elev. 600 m, 17 August 1965, *Bernardi* 10293 (L.2699513!, P04225773!); Col d'Amos, elev. 150 m, 18 August 1965, *Bernardi* 10335 (L.2699512!, P04225774!); Poro, 27 October 1977, *Bourret* 1380 (NOU058159!); Néaria, elev. 100 m, March 1901, *Cribs* 1208 (P04225763!, P04225764!); Pouembout, conservatoire botanique de Tiéa, 3 August 2000, *Dagostini* 181 (NOU058337!); Méré, Poro-Kouaoua, 3 September 2003, *Dagostini* 720 (NOU001275!); Baie d'Urville, 1 May 1869, *Delacours.n.* (P04225766!, P05236785!); *s.l.*, 1861, *Deplanche* 205 (P04225770!, P04226185!); Gatope, 1861, *Deplanche* 429 [*Vieillard* 2969] (P04220357!); Ile Art, elev. 200 m, 19°41'58"S, 163°38'42"E, 25 April 2017, *Gâteblé* 857 (NOU105131!); Ile Art, elev. 200 m, 19°41'58"S, 163°38'42"E, 25 April 2017, *Gâteblé* 870 (NOU105117!); *s.l.*, *Godefroy s.n.* (L.2699541!); Ouest du Dôme de Tiébaghi, 9 November 1980, *Hoff* 3128 (NOU058236!, P04225721!); (Haute Tipindjé) vallée de la Paoué, elev. 500 m, 13 April 1951, *Hürlimann* 1165 (P04225729!); Mt. Poudéhoume, elev. 180 m, 23 July 1951, *Hürlimann* 1624 (P04225730!, US2316431!); Région de Poro, Mine «Cyclone», elev. 250 m, 6 May 1969, *Jaffré* 223 (NOU058314!, P04236832!); Dôme de Tiébaghi, elev. 350 m, 15 October 1975, *Jaffré* 1384 (NOU058319!, P04260834!); Ile Art: plateau Nord, 9 December 1975, *Jaffré* 1545 (NOU058188!, P04260776!); Ile Art: plateau Nord, 9 December 1975, *Jaffré* 1558 (NOU058187!, P04260775!); Ile Art: plateau Nord, 10 December 1975, *Jaffré* 1664 (NOU058174!, P04260779!); Tiébaghi, 6 May 1978, *Jaffré* 2471 (NOU058200!); Troulala, elev. 160 m, 20°37'53"S, 164°22'22"E, 9 January 2018, *Lannuzel* 128 (NOU089019!); *s.l.*, *Le Rat* 773 (P04260773!); Paagoumène, elev. 50 m, 12 November 1965, *MacKee* 13887 (P04225755!); Montagne de Poum, elev. 380 m, 11 May 1966, *MacKee* 14987 (NOU058243!, P04226202!, P05236765!, US3669592!image); Sommet Nord du Mt Kaala, elev. 1000 m, 25 December 1966, *MacKee* 16127 (P04225817!); Paagoumène, elev. 5 m, 20 April 1967, *MacKee* 16603 (P04225815!); Pente Ouest du Mt Ouazangou, elev. 100 m, 19 June 1967, *MacKee* 16935 (L.2699554!, NOU058175!, P04236807!); Houaïlou - Cap Bocage, elev. 150 m, 1 May 1968, *MacKee* 18753 (L.3729839!, NOU058246!, P04236785!); Houaïlou, presqu'île de Ba, elev. 200 m, 24 September 1969, *MacKee* 20866 (L.3729840!, L.3729841!, NOU058255!, P04236784!); Taom Mt
Homédéboa, elev. 800 m, 16 October 1969, *MacKee 20993* (L.2702414!, NOU058208!, P04236859!); Ile Yandé: Oumbaïna, elev. 50 m, 7 October 1970, *MacKee 22705* (NOU058269!, P04225600!); Poum, Titch, elev. 2 m, 5 January 1971, *MacKee 23132* (NOU058176!, P04260833!); Poum, Titch, elev. 20 m, 5 January 1971, *MacKee 23144* (NOU058258!, P04236790!); Néhoué, elev. 30 m, 18 September 1973, *MacKee 27369* (L.3718454!, P04225590!); Houailou: Nessakouya, *MacKee 29630* (L.2702449!); Poindimié: Povila, elev. 200 m, 21 March 1975, *MacKee 29862* (BISH746230!, L.2702477!, NOU058249!, P04260861!); Plateau N Ile Art, elev. 150 m, 8 December 1975, *MacKee 30403* (P04225549!); Plateau N Ile Art, elev. 150 m, 8 December 1975, *MacKee 30416* (L.2702463!, NOU058256!, P04225545!, P05236809!); Plateau N de l'Ile Art, elev. 220 m, 9 December 1975, *MacKee 30439* (L.2702437!, NOU058177!, P04260836!); Plateau N Ile Art, elev. 200 m, 10 December 1975, *MacKee 30500* (L.2699537!, NOU058172!, P04260837!); Pouembout, elev. 30 m, 9 March 1976, *MacKee 30844* (L.2699517!, NOU058220!, P04225541!); Poum: Ile Tanlé, elev. 140 m, 16 February 1977, *MacKee 32818* (L.2699555!, MO1114599!, NOU058169!, P04225551!); Dent de Poya (Versant Nord-Ouest), elev. 200 m, 14 August 1977, *MacKee 33632* (L.2702442!, NOU058203!, P04236845!); Dent de Poya, elev. 500 m, 14 August 1977, *MacKee 33641* (P04236847!); Dent de Poya, elev. 500 m, 14 August 1977, *MacKee 33644* (L.2702455!, NOU058282!, P04236843!, P05236775!); Base NE Dôme Tiébaghi, elev. 100 m, 11 May 1978, *MacKee 35122* (P04236794!); Paagoumène, elev. 10 m, 9 May 1979, *MacKee 36867* (L.2702425!, NOU058207!, P04236793!); Paagoumène, elev. 10 m, 9 May 1979, *MacKee 36869* (L.2702439!, NOU058312!, P04236791!, P05236824!); Radio Tower Overlooking Houaïlou, 20 October 1980, *McPherson 3265* (MO1113727!, NOU058247!, P04236827!); Tiébaghi Massif, elev. 150 m, 22 December 1983, *McPherson 6201* (MO420941!, NOU058268!, P04225573!); Ile Art, 1860, *Montrouzier 156* (P00072146!); s.l., *Mueller s.n.* (P04225575!); Massif Onajiele, 20°46'42"S, 164°28'4"E, 16 September 2016, *Munzinger (leg.Scopetra) 7856* (MPU640690!); s.l., *Pancher s.n.* (L.2699534!, P04225572!, P04260853!); Auf den Bergen bei Paita., *Schlechter 14863* (E00098792!, L.2699528!); Pied de la Tiébaghi, 1 February 1969, *Schmid 2682* (P04226204!, P04551235!); Montagne des Sources, elev. 600 m, 10 March 1965, *Schmid 96* (P04551233!); Plaine des Gaïacs, 3 November 1975, *Sévenet & Boiteau 1087* (P04225556!); Dôme de Tiébaghi, 4 November 1975, *Sévenet & Boiteau 1113* (NOU058286!, P04225552!); Mt Tiébaghi, 5 November 1975, *Sévenet & Boiteau 1116* (P04225553!); Paagoumène, 24 November 1967, *Sévenet 39 S* (P04551182!); Col de Parari - Ouégoa, elev. 270 m, 27 November 1967, *Sévenet 48 S* (P04551230!); Boulinda, elev. 250 m, 10 March 1964, *Stauffer, Blanchon & Boulet 5787* (NOU058183!, P04225554!); Montagne de Poum, 25 March 1982, *Suprin 1750* (P04226205!); Dôme de Tiébaghi, elev. 550 m, 17 August 1965, *Veillon 352* (NOU058205!); Dôme de Tiébaghi, elev. 550 m, 17 August 1965, *Veillon 352* (P04220404!); Ile Yandé: centre Ouest, 23 August 1978, *Veillon 3660* (NOU058335!, P04260790!, P05236781!); Paagoumène Site de L'Usine, 13 May 1981, *Veillon 4488* (NOU058029!, NOU058030!); Poya: piste de la mine St. Louis, 2 December 1982, *Veillon 5351* (NOU058241!, P04260854!, P05236782!); Balade, 1855, *Vieillard 951* (P04220387!, P04220389!, P04236786!, P04236787!); Balade, 1855, *Vieillard 952* (P04220382!, P04220384!, P04220385!, P04260777!); Gatope, December 1868, *Vieillard 2968* (P04226174!, P04236772!, P04236773!, P04236774!); s.l., *Vieillard 2969* (P04220354!, P04225762!); *South Province*; Baie de Prony, 1 October 1910, *d'Alleizette s.n.* (P04260771!); Bords de la Kouvélée, 30 January 1869, *Balansa 1405a* (P04225813!); s.l., *Anderson s.n.* (BM000508524!); s.l., *Balansa 2432 a* (L.2699549!); Collines ferrugineuses à l'embouchure du Dothio, *Balansa 3473* (A00054887!, P00072134!, P00072135!); Tontouta, 29 May 1975, *Debray 2305* (P04236802!); Tupiti, 1861, *Deplanche 429* [*Vieillard 2969*] (P04220388!, P04220391!, P04225761!); Région de Nouméa, 1910, *Godefroy 111 NC* (P04260772!); Baie des Pirogues, *Guillaumin, Baumann-Bodenheim, Hürlimann 15817* (L.3735038!, US2316792!); Col de Plum, *Guillaumin, Baumann-Bodenheim & Hürlimann 5571* (L.3735037!); Rivière des Lacs, *Guillaumin & Baumann-Bodenheim 6652* (L.3718453!); Mt Dore, *Guillaumin & Baumann-Bodenheim 7959* (US2316499!); Mont Dzumac, elev. 100 m, 25 November 1979, *Hartley 15102* (L.2699551!, NOU058252!); Baie des Pirogues, elev. 60 m, 17 December 1950, *Hürlimann 411* (P04225723!); Mine du Plateau Supérieur au Dessus Du Belvédère, 3 April 1969, *Jaffré 189* (NOU058288!, P04226169!); Secteur du Mont Dore, 4 January 1978, *Jaffré 2122* (NOU058272!); Col de plum, 28 October 1970, *Jaffré 419* (NOU058271!); Route de Bourail à Kua, 1 July 1904, *Le Rat 2408* (P04236804!); Vallée de la Dumbéa, elev. 100 m, 17 March 1956, *MacKee 4073* (L.2702424!, P04236851!); Haute Vallée Tontouta: ancienne Mine Galliéni, elev. 400 m, 14 October 1956, *MacKee 5442* (L.2702484!, P04226173!); Ouroué, elev. 10 m, 20 October 1965, *MacKee 13625* (P04225752; Ouroué, 20 April 1967, *MacKee 16697* (L.2702479!); Ouroué, elev. 10 m, 6 December 1965, *MacKee 14006* (L.3729838!, P04236833!); Basse Vallée de Thio, elev. 10 m, 25 February 1966, *MacKee 14475* (P05236810!); Basse Vallée de Thio, elev. 10 m, 25 February 1966, *MacKee 14475* (BISH745434!, L.2702443!, NOU058242!, P04225747!)); Ouroué, 8 August 1906, *MacKee 15476* (L.2702482!, NOU058211!, P04260815!); Ouroué, elev. 300 m, 30 April 1967, *MacKee 16697* (NOU058210!, P04260825!); Route de Yaté: Mt. Kouanenoa, elev. 250 m, 11 March 1969, *MacKee 20277* (NOU058330!, P04260844!); Vallée de la Dumbéa, elev. 30 m, 1 July 1974, *MacKee 28866* (L.2702464!, P04225588!); Vallée de la Dumbéa, elev. 30 m, 29 February 1976, *MacKee 30786* (BISH745305!, L.2702468!,
Homédéboa, elev. 800 m, 16 October 1969, *MacKee 20993* (L.2702414!, NOU058208!, P04236859!); Ile Yandé: Oumbaïna, elev. 50 m, 7 October 1970, *MacKee 22705* (NOU058269!, P04225600!); Poum, Titch, elev. 2 m, 5 January 1971, *MacKee 23132* (NOU058176!, P04260833!); Poum, Titch, elev. 20 m, 5 January 1971, *MacKee 23144* (NOU058258!, P04236790!); Néhoué, elev. 30 m, 18 September 1973, *MacKee 27369* (L.3718454!, P04225590!); Houailou: Nessakouya, *MacKee 29630* (L.2702449!); Poindimié: Povila, elev. 200 m, 21 March 1975, *MacKee 29862* (BISH746230!, L.2702477!, NOU058249!, P04260861!); Plateau N Ile Art, elev. 150 m, 8 December 1975, *MacKee 30403* (P04225549!); Plateau N Ile Art, elev. 150 m, 8 December 1975, *MacKee 30416* (L.2702463!, NOU058256!, P04225545!, P05236809!); Plateau N de l'Ile Art, elev. 220 m, 9 December 1975, *MacKee 30439* (L.2702437!, NOU058177!, P04260836!); Plateau N Ile Art, elev. 200 m, 10 December 1975, *MacKee 30500* (L.2699537!, NOU058172!, P04260837!); Pouembout, elev. 30 m, 9 March 1976, *MacKee 30844* (L.2699517!, NOU058220!, P04225541!); Poum: Ile Tanlé, elev. 140 m, 16 February 1977, *MacKee 32818* (L.2699555!, MO1114599!, NOU058169!, P04225551!); Dent de Poya (Versant Nord-Ouest), elev. 200 m, 14 August 1977, *MacKee 33632* (L.2702442!, NOU058203!, P04236845!); Dent de Poya, elev. 500 m, 14 August 1977, *MacKee 33641* (P04236847!); Dent de Poya, elev. 500 m, 14 August 1977, *MacKee 33644* (L.2702455!, NOU058282!, P04236843!, P05236775!); Base NE Dôme Tiébaghi, elev. 100 m, 11 May 1978, *MacKee 35122* (P04236794!); Paagoumène, elev. 10 m, 9 May 1979, *MacKee 36867* (L.2702425!, NOU058207!, P04236793!); Paagoumène, elev. 10 m, 9 May 1979, *MacKee 36869* (L.2702439!, NOU058312!, P04236791!, P05236824!); Radio Tower Overlooking Houaïlou, 20 October 1980, *McPherson 3265* (MO1113727!, NOU058247!, P04236827!); Tiébaghi Massif, elev. 150 m, 22 December 1983, *McPherson 6201* (MO420941!, NOU058268!, P04225573!); Ile Art, 1860, *Montrouzier 156* (P00072146!); s.l., *Mueller s.n.* (P04225575!); Massif Onajiele, 20°46'42"S, 164°28'4"E, 16 September 2016, *Munzinger (leg.Scopetra) 7856* (MPU640690!); s.l., *Pancher s.n.* (L.2699534!, P04225572!, P04260853!); Auf den Bergen bei Paita., *Schlechter 14863* (E00098792!, L.2699528!); Pied de la Tiébaghi, 1 February 1969, *Schmid 2682* (P04226204!, P04551235!); Montagne des Sources, elev. 600 m, 10 March 1965, *Schmid 96* (P04551233!); Plaine des Gaïacs, 3 November 1975, *Sévenet & Boiteau 1087* (P04225556!); Dôme de Tiébaghi, 4 November 1975, *Sévenet & Boiteau 1113* (NOU058286!, P04225552!); Mt Tiébaghi, 5 November 1975, *Sévenet & Boiteau 1116* (P04225553!); Paagoumène, 24 November 1967, *Sévenet 39 S* (P04551182!); Col de Parari - Ouégoa, elev. 270 m, 27 November 1967, *Sévenet 48 S* (P04551230!); Boulinda, elev. 250 m, 10 March 1964, *Stauffer, Blanchon & Boulet 5787* (NOU058183!, P04225554!); Montagne de Poum, 25 March 1982, *Suprin 1750* (P04226205!); Dôme de Tiébaghi, elev. 550 m, 17 August 1965, *Veillon 352* (NOU058205!); Dôme de Tiébaghi, elev. 550 m, 17 August 1965, *Veillon 352* (P04220404!); Ile Yandé: centre Ouest, 23 August 1978, *Veillon 3660* (NOU058335!, P04260790!, P05236781!); Paagoumène Site de L'Usine, 13 May 1981, *Veillon 4488* (NOU058029!, NOU058030!); Poya: piste de la mine St. Louis, 2 December 1982, *Veillon 5351* (NOU058241!, P04260854!, P05236782!); Balade, 1855, *Vieillard 951* (P04220387!, P04220389!, P04236786!, P04236787!); Balade, 1855, *Vieillard 952* (P04220382!, P04220384!, P04220385!, P04260777!); Gatope, December 1868, *Vieillard 2968* (P04226174!, P04236772!, P04236773!, P04236774!); s.l., *Vieillard 2969* (P04220354!, P04225762!); *South Province*; Baie de Prony, 1 October 1910, *d'Alleizette s.n.* (P04260771!); Bords de la Kouvélée, 30 January 1869, *Balansa 1405a* (P04225813!); s.l., *Anderson s.n.* (BM000508524!); s.l., *Balansa 2432 a* (L.2699549!); Collines ferrugineuses à l'embouchure du Dothio, *Balansa 3473* (A00054887!, P00072134!, P00072135!); Tontouta, 29 May 1975, *Debray 2305* (P04236802!); Tupiti, 1861, *Deplanche 429* [*Vieillard 2969*] (P04220388!, P04220391!, P04225761!); Région de Nouméa, 1910, *Godefroy 111 NC* (P04260772!); Baie des Pirogues, *Guillaumin, Baumann-Bodenheim, Hürlimann 15817* (L.3735038!, US2316792!); Col de Plum, *Guillaumin, Baumann-Bodenheim & Hürlimann 5571* (L.3735037!); Rivière des Lacs, *Guillaumin & Baumann-Bodenheim 6652* (L.3718453!); Mt Dore, *Guillaumin & Baumann-Bodenheim 7959* (US2316499!); Mont Dzumac, elev. 100 m, 25 November 1979, *Hartley 15102* (L.2699551!, NOU058252!); Baie des Pirogues, elev. 60 m, 17 December 1950, *Hürlimann 411* (P04225723!); Mine du Plateau Supérieur au Dessus Du Belvédère, 3 April 1969, *Jaffré 189* (NOU058288!, P04226169!); Secteur du Mont Dore, 4 January 1978, *Jaffré 2122* (NOU058272!); Col de plum, 28 October 1970, *Jaffré 419* (NOU058271!); Route de Bourail à Kua, 1 July 1904, *Le Rat 2408* (P04236804!); Vallée de la Dumbéa, elev. 100 m, 17 March 1956, *MacKee 4073* (L.2702424!, P04236851!); Haute Vallée Tontouta: ancienne Mine Galliéni, elev. 400 m, 14 October 1956, *MacKee 5442* (L.2702484!, P04226173!); Ouroué, elev. 10 m, 20 October 1965, *MacKee 13625* (P04225752; Ouroué, 20 April 1967, *MacKee 16697* (L.2702479!); Ouroué, elev. 10 m, 6 December 1965, *MacKee 14006* (L.3729838!, P04236833!); Basse Vallée de Thio, elev. 10 m, 25 February 1966, *MacKee 14475* (P05236810!); Basse Vallée de Thio, elev. 10 m, 25 February 1966, *MacKee 14475* (BISH745434!, L.2702443!, NOU058242!, P04225747!)); Ouroué, 8 August 1906, *MacKee 15476* (L.2702482!, NOU058211!, P04260815!); Ouroué, elev. 300 m, 30 April 1967, *MacKee 16697* (NOU058210!, P04260825!); Route de Yaté: Mt. Kouanenoa, elev. 250 m, 11 March 1969, *MacKee 20277* (NOU058330!, P04260844!); Vallée de la Dumbéa, elev. 30 m, 1 July 1974, *MacKee 28866* (L.2702464!, P04225588!); Vallée de la Dumbéa, elev. 30 m, 29 February 1976, *MacKee 30786* (BISH745305!, L.2702468!,
NOU058254!, P04225547!, P04551239!); Dumbéa, elev. 50 m, 30 July 1984, *MacKee 42079* (NOU058262!, P04236835!, P04551205!); Along road from Dumbéa river valley towards Mt Dzumac, elev. 300 m, 25 November 1979, *McPherson 2148* (NOU058292!, P04236810!); Vallée de la Tontouta, 11 March 2007, *Munzinger 4201* (NOU017409!, P04551212!); Auf den Bergen bei Païta, elev. 200m, 1 October 1902, *Schlechter 14863* (L.2699527!, P04225562!); Port Bouquet. Ilôt Toupeti, face N.E, 3 June 1982, *Suprin 1899* (NOU058281!); Cours moyen de la Dumbéa, 16 September 1980, *Suprin 675* (NOU058197!); Port de France, 1855, *Vieillard 954* (P04260774!, P04260778!).

*Alyxia urceolata* Lannuzel, sp.nov. (Figs. 19, 20), (urn:lsid:ipni.org:names:77336420-1)

**Diagnosis:**—*Alyxia urceolata* is a small dense shrub characterized by its small linear leaves, and the urceolate shape of its small flowers. It is similar to *A. caletioides* when sterile but still differs by its narrower leaves (0.15–0.25 cm vs 0.15–0.45 cm in *A. caletioides*). When fertile, it is readily distinguishable by its smaller and axillary flowers. It is also similar to *A. minimiflora* and *A. rosmarinifolia* but differs from the former by longer flowers and from the second by the young parts' pubescence.

<figure><img src="image_28.png" /><figcaption>**FIGURE 19.** *Alyxia urceolata* with detail of a mature fruit (A), flower (B), habit (C) and a flowering branch (D). Photographer: G. Lannuzel from *Lannuzel 178*.</figcaption></figure>
NOU058254!, P04225547!, P04551239!); Dumbéa, elev. 50 m, 30 July 1984, *MacKee 42079* (NOU058262!, P04236835!, P04551205!); Along road from Dumbéa river valley towards Mt Dzumac, elev. 300 m, 25 November 1979, *McPherson 2148* (NOU058292!, P04236810!); Vallée de la Tontouta, 11 March 2007, *Munzinger 4201* (NOU017409!, P04551212!); Auf den Bergen bei Païta, elev. 200m, 1 October 1902, *Schlechter 14863* (L.2699527!, P04225562!); Port Bouquet. Ilôt Toupeti, face N.E, 3 June 1982, *Suprin 1899* (NOU058281!); Cours moyen de la Dumbéa, 16 September 1980, *Suprin 675* (NOU058197!); Port de France, 1855, *Vieillard 954* (P04260774!, P04260778!).

*Alyxia urceolata* Lannuzel, sp.nov. (Figs. 19, 20), (urn:lsid:ipni.org:names:77336420-1)

**Diagnosis:**—*Alyxia urceolata* is a small dense shrub characterized by its small linear leaves, and the urceolate shape of its small flowers. It is similar to *A. caletioides* when sterile but still differs by its narrower leaves (0.15–0.25 cm vs 0.15–0.45 cm in *A. caletioides*). When fertile, it is readily distinguishable by its smaller and axillary flowers. It is also similar to *A. minimiflora* and *A. rosmarinifolia* but differs from the former by longer flowers and from the second by the young parts' pubescence.

<figure><img src="image_24.png" /><figcaption>**FIGURE 19.** *Alyxia urceolata* with detail of a mature fruit (A), flower (B), habit (C) and a flowering branch (D). Photographer: G. Lannuzel from *Lannuzel 178*.</figcaption></figure>
<figure><img src="image_29.png" /><figcaption>**FIGURE 20.** Known distribution of *Alyxia urceolata* (dots). Symbols with “T” represent type specimens. Grayed areas represent ultramafic substrates.</figcaption></figure>

**Type:**—NEW CALEDONIA, Mont Boulinda, elev. 1100 m, 5 September 1971, *Schmid* 4031, holotype: NOU [NOU022042!]; isotype: P [P05391605!]

Small shrub, up to 50 cm, young stems puberulent; latex white. Leaves ternate, subcoriaceous, green adaxially, light green abaxially when young, slightly revolutate, petiole 1–2.5 mm long, puberulent, lamina linear, 9.5–13.5 × 1.5–2.5 mm; base cuneate, apex rounded, mucronate, both surfaces looking lustrous but tomentulose and covered with very short hairs (ca. 0.01 mm long) on main veins abaxially, leaf venation not visible apart from the midrib. Flowers mostly axillary, sometimes subterminal, solitary and sometimes grouped in fascicules, axes green, pubescent, null to 2 mm, pedicels not visible, covered by 3–7 bracts, ca. 1 × 1 mm, blackish, pubescent.

Flower 5-merous, narrowly urceolate, 5.5 × 1.5 mm. Calyx lobes appressed to corolla, lanceolate, acute at apex, 2 mm long, green to blackish, pubescent, 5. Corolla tube yellowish, lobes white, tube ca. 3 × 1.5 mm, glabrous outside, with 2 rings of hairs inside, first around stigma, composed of 0.1mm long erected hairs, second around anthers, composed of 0.2 mm erected hairs, lobes sinistrorse, rounded, glabrous with some hairs at base outside, spreading, ca. 1 mm long.

Anther cone 0.8 mm long, not exserted; filaments 0.2 mm long, inserted at 2/3 of tube length. Ovary densely pubescent with 0.1 mm long hairs, style 0.8 mm long, glabrous, stigma ovoid, acute, hairy at top. Fruit black, fleshy, 1–2 article, 4–7 × 4–5 mm, globose to ovoid.

**Distribution and habitat:**—*Alyxia urceolata* is distributed on ultramafic massifs, in the northwestern part of Grande Terre, New Caledonia, from Mont Boulinda to Mont Ouazangou. It grows in open shrublands, from 500 to 1100 m elev., on ultramafic substrate.

**Phenology:**—From herbarium specimens and pictures available, the species may be able to flower all year round. Fruits were collected in January, July, and September.

**Etymology:**—The species is named after the urceolate shape of the corolla tube.

**Notes:**—Specimens of this new species were included in *Alyxia caletioides* by previous authors (Boiteau 1981
<figure><img src="image_25.png" /><figcaption>FIGURE 20. Known distribution of *Alyxia urceolata* (dots). Symbols with “T” represent type specimens. Grayed areas represent ultramafic substrates.</figcaption></figure>

**Type:**—NEW CALEDONIA, Mont Boulinda, elev. 1100 m, 5 September 1971, *Schmid* 4031, holotype: NOU [NOU022042!]; isotype: P [P05391605!]

Small shrub, up to 50 cm, young stems puberulent; latex white. Leaves ternate, subcoriaceous, green adaxially, light green abaxially when young, slightly revolutate, petiole 1–2.5 mm long, puberulent, lamina linear, 9.5–13.5 × 1.5–2.5 mm; base cuneate, apex rounded, mucronate, both surfaces looking lustrous but tomentulose and covered with very short hairs (ca. 0.01 mm long) on main veins abaxially, leaf venation not visible apart from the midrib. Flowers mostly axillary, sometimes subterminal, solitary and sometimes grouped in fascicules, axes green, pubescent, null to 2 mm, pedicels not visible, covered by 3–7 bracts, ca. 1 × 1 mm, blackish, pubescent.

Flower 5-merous, narrowly urceolate, 5.5 × 1.5 mm. Calyx lobes appressed to corolla, lanceolate, acute at apex, 2 mm long, green to blackish, pubescent, 5. Corolla tube yellowish, lobes white, tube ca. 3 × 1.5 mm, glabrous outside, with 2 rings of hairs inside, first around stigma, composed of 0.1mm long erected hairs, second around anthers, composed of 0.2 mm erected hairs, lobes sinistrorse, rounded, glabrous with some hairs at base outside, spreading, ca. 1 mm long.

Anther cone 0.8 mm long, not exserted; filaments 0.2 mm long, inserted at 2/3 of tube length. Ovary densely pubescent with 0.1 mm long hairs, style 0.8 mm long, glabrous, stigma ovoid, acute, hairy at top. Fruit black, fleshy, 1–2 article, 4–7 × 4–5 mm, globose to ovoid.

**Distribution and habitat:**—*Alyxia urceolata* is distributed on ultramafic massifs, in the northwestern part of Grande Terre, New Caledonia, from Mont Boulinda to Mont Ouazangou. It grows in open shrublands, from 500 to 1100 m elev., on ultramafic substrate.

**Phenology:**—From herbarium specimens and pictures available, the species may be able to flower all year round. Fruits were collected in January, July, and September.

**Etymology:**—The species is named after the urceolate shape of the corolla tube.

**Notes:**—Specimens of this new species were included in *Alyxia caletioides* by previous authors (Boiteau 1981
and Middleton 2002), but differs from it by its shorter and axillary flowers. On sterile specimens, this species is distinct
by its narrower, strictly linear leaves, and the more regular phyllotaxy.

**Specimens examined:**—Koniambo, elev. 700 m, 22 February 1972, *Jaffré 695* (NOU021991!; P05391638!); Massif du Koniambo, elev. 520 m, 1 June 1972, *Jaffré 767* (NOU022045!); Massif du Boulinda, elev. 800 m, 1 July 1972, *Jaffré 827* (NOU021992!); Koniambo, elev. 850 m, 22 November 2002, *Jaffré 3536* (NOU021997!); Mt Ouazangou, proche du sommet, elev. 850 m, 3 July 2018, *Lannuzel 178* (NOU090306!); Mt Ouazangou, elev. 844 m, 20°44'34'S, 164°29'42''E, 7 March 2019, *Lannuzel 246* (NOU107093!); Mt Ouazangou, elev. 840 m, 20°44'32'S, 164°29'43''E, 7 March 2019, *Lannuzel 249* (NOU107095!); Mt Boulinda, elev. 1100 m, 5 September 1971, *Schmid 4031* (NOU022042!); Mont Boulinda, elev. 700–800 m, 22 April 1968, *Veillon 1757* (NOU058244!; P04260811!).

## Acknowledgement

This study was partly supported by a grant (CSF n°4PS2017-CNRT.IAC/ ERMINE) from “CNRT Nickel et son Environnement, Nouméa, New Caledonia” to study rare species threatened by nickel mining, and by a grant (n°FFB-22-0357) from “Office Français de la Biodiversité” to study taxonomically orphan groups of New Caledonia.

The authors are grateful to all the staff at the consulted herbaria, especially, but not limited to, the anonymous BR scientific Manager for providing AWH specimens, Corinne Sarthou in P for her welcome during our mission there, as well as Germinal Rouhan for transmitting hidden scans. Of course, the whole team of the NOU herbarium is thanked for giving access to the collections and providing wise advice during this study: David Bruy, Mathieu Donnat, Jacqueline Fambart, and William Nigote. We are also grateful to Christian Laudereau and Benoît Henry for their photographs, and Antonia Baumann, for giving access to her family's private herbarium. Last but not least, the whole Red List Authority team and Endemia members are thanked for their involvement in the process, and the often last-minute-specimen-that-changes-everything contributions. Finally, authors are grateful to Roy Benyon for English editing, Yohan Pillon and an anonymous reviewer for their help in improving this paper.

## References

Baillon, H. (1889) Sur quelques *Gynopogon* néo-calédoniens. *Bulletin de la Société Linnéenne de Paris* 1 (82-100): 774-776.

Boiteau, P. & Allorge, L. (1979) Nouveaux taxons d'Alyxia (Apocynaceae) de Nouvelle-Calédonie. *Adansonia* sér. 2, 18: 443-457.

Boiteau, P. (1981) Apocynacées. *In:* Muséum national d'histoire naturelle, Laboratoire de phanérogamie (Org.) *Flore de la Nouvelle Calédonie et dépendance*, 10. Muséum National d'Histoire Naturelle, Paris, 306 pp.

Brown, R. (1810) *Prodromus florae Novae Hollandiae et Insulae van-Diemen*. Johnson, London, 590 pp.

Däniker, A.U. (1933) Ergebnisse der Reise von Dr A.U. Däniker nach Neu-Caledonien und den Loyalitäts-Inseln (1924-1925). Vierteljahrsschrift der Natur. *Gesellschaft in Zürich* 19 (78): 339-395.

de Moares, P.L.R. (2013) The collections of Lauraceae in the Herbarium of Henri Van Heurck (AWH). *Plant Ecology and Evolution* 146 (3): 360-383.
https://doi.org/10.5091/plecevo.2013.859

Endress, M.E., Meve, U., Middleton, D.J. & Liede-Schumann, S. (2018) Apocynaceae. *In:* Kadereit, J. & Bittrich, V. (Eds.) *The Families and Genera of Vascular Plants*, vol. 15: Flowering Plants. Eudicots. Springer, Heidelberg, 570 pp.

Forster, J.R. & Forster, G. (1776) *Characteres generum plantarum quas in itinere ad insulas maris australis*. Londini, 150pp.

Guillaumin, A. (1911) Catalogue des plantes phanérogames de la Nouvelle-Calédonie et dépendances. *Annales du Musée colonial de Marseille* sér. 2, 9: 80-290.

Guillaumin, A. (1941) Matériaux pour la flore de la Nouvelle-Calédonie. LIX. Révision des Apocynacées. *Bulletin de la Société Botanique de France* 88: 358-380.
https://doi.org/10.1080/00378941.1941.10834233

Guillaumin, A. (1957) Résultats scientifiques de la mission Franco-Suisse de botanique en Nouvelle-Calédonie (1950-1952). *Mémoires du Muséum National d'Histoire Naturelle*, Sér. B, Botanique 8: 1-120.

Guillaumin, A. (1958) Contribution à la flore de la Nouvelle-Calédonie. CXV. Plantes récoltées par MacMillan. *Bulletin du Museum National d'Histoire Naturelle* sér. 2, 30: 393-401.

Harris, J.G. & Harris, M.W. (2001) *Plant identification terminology, an illustrated glossary*, 2nd edition. Spring Lake Publishing, Spring Lake, 206 pp.
and Middleton 2002), but differs from it by its shorter and axillary flowers. On sterile specimens, this species is distinct by its narrower, strictly linear leaves, and the more regular phyllotaxy.

**Specimens examined:**—Koniambo, elev. 700 m, 22 February 1972, *Jaffré 695* (NOU021991!; P05391638!); Massif du Koniambo, elev. 520 m, 1 June 1972, *Jaffré 767* (NOU022045!); Massif du Boulinda, elev. 800 m, 1 July 1972, *Jaffré 827* (NOU021992!); Koniambo, elev. 850 m, 22 November 2002, *Jaffré 3536* (NOU021997!); Mt Ouazangou, proche du sommet, elev. 850 m, 3 July 2018, *Lannuzel 178* (NOU090306!); Mt Ouazangou, elev. 844 m, 20°44'34'S, 164°29'42''E, 7 March 2019, *Lannuzel 246* (NOU107093!); Mt Ouazangou, elev. 840 m, 20°44'32'S, 164°29'43''E, 7 March 2019, *Lannuzel 249* (NOU107095!); Mt Boulinda, elev. 1100 m, 5 September 1971, *Schmid 4031* (NOU022042!); Mont Boulinda, elev. 700–800 m, 22 April 1968, *Veillon 1757* (NOU058244!; P04260811!).

## Acknowledgement

This study was partly supported by a grant (CSF n°4PS2017-CNRT.IAC/ERMINE) from “CNRT Nickel et son Environnement, Nouméa, New Caledonia” to study rare species threatened by nickel mining, and by a grant (n°FFB-22-0357) from “Office Français de la Biodiversité” to study taxonomically orphan groups of New Caledonia.

The authors are grateful to all the staff at the consulted herbaria, especially, but not limited to, the anonymous BR scientific Manager for providing AWH specimens, Corinne Sarthou in P for her welcome during our mission there, as well as Germinal Rouhan for transmitting hidden scans. Of course, the whole team of the NOU herbarium is thanked for giving access to the collections and providing wise advice during this study: David Bruy, Mathieu Donnat, Jacqueline Fambart, and William Nigote. We are also grateful to Christian Laudereau and Benoît Henry for their photographs, and Antonia Baumann, for giving access to her family's private herbarium. Last but not least, the whole Red List Authority team and Endemia members are thanked for their involvement in the process, and the often last-minute-specimen-that-changes-everything contributions. Finally, authors are grateful to Roy Benyon for English editing, Yohan Pillon and an anonymous reviewer for their help in improving this paper.

## References

* Baillon, H. (1889) Sur quelques *Gynopogon* néo-calédoniens. *Bulletin de la Société Linnéenne de Paris* 1 (82–100): 774–776.

* Boiteau, P. & Allorge, L. (1979) Nouveaux taxons d'Alyxia (Apocynaceae) de Nouvelle-Calédonie. *Adansonia* sér. 2, 18: 443–457.

* Boiteau, P. (1981) Apocynacées. *In:* Muséum national d'histoire naturelle, Laboratoire de phanérogamie (Org.) *Flore de la Nouvelle Calédonie et dépendance*, 10. Muséum National d'Histoire Naturelle, Paris, 306 pp.

* Brown, R. (1810) *Prodromus florae Novae Hollandiae et Insulae van-Diemen*. Johnson, London, 590 pp.

* Däniker, A.U. (1933) Ergebnisse der Reise von Dr A.U. Däniker nach Neu-Caledonien und den Loyalitäts-Inseln (1924-1925). Vierteljahrsschrift der Natur. *Gesellschaft in Zürich* 19 (78): 339–395.

* de Moares, P.L.R. (2013) The collections of Lauraceae in the Herbarium of Henri Van Heurck (AWH). *Plant Ecology and Evolution* 146 (3): 360–383.
https://doi.org/10.5091/plecevo.2013.859

* Endress, M.E., Meve, U., Middleton, D.J. & Liede-Schumann, S. (2018) Apocynaceae. *In:* Kadereit, J. & Bittrich, V. (Eds.) *The Families and Genera of Vascular Plants*, vol. 15: Flowering Plants. Eudicots. Springer, Heidelberg, 570 pp.

* Forster, J.R. & Forster, G. (1776) *Characteres generum plantarum quas in itinere ad insulas maris australis*. Londini, 150pp.

* Guillaumin, A. (1911) Catalogue des plantes phanérogames de la Nouvelle-Calédonie et dépendances. *Annales du Musée colonial de Marseille* sér. 2, 9: 80–290.

* Guillaumin, A. (1941) Matériaux pour la flore de la Nouvelle-Calédonie. LIX. Révision des Apocynacées. *Bulletin de la Société Botanique de France* 88: 358–380.
https://doi.org/10.1080/00378941.1941.10834233

* Guillaumin, A. (1957) Résultats scientifiques de la mission Franco-Suisse de botanique en Nouvelle-Calédonie (1950-1952). *Mémoires du Muséum National d'Histoire Naturelle*, Sér. B, Botanique 8: 1–120.

* Guillaumin, A. (1958) Contribution à la flore de la Nouvelle-Calédonie. CXV. Plantes récoltées par MacMillan. *Bulletin du Museum National d'Histoire Naturelle* sér. 2, 30: 393–401.

* Harris, J.G. & Harris, M.W. (2001) *Plant identification terminology, an illustrated glossary*, 2nd edition. Spring Lake Publishing, Spring Lake, 206 pp.
IUCN (2019) Guidelines for Using the IUCN Red List Categories and Criteria. Version 14. Prepared by the Standards and Petitions Committee. Available from: http://www.iucnredlist.org/documents/RedListGuidelines.pdf (accessed 18 November 2022)

Jost, X., Ansel, J.-L., Lecellier, G., Raharivelomanana, P. & Butaud, J-F. (2016) Ethnobotanical survey of cosmetic plants used in Marquesas Islands (French Polynesia). *Journal of Ethnobotany and Ethnomedicine* 12: 55.
https://doi.org/10.1186/s13002-016-0128-5

Kamelamela, K.L., Chamberlain, J., Lehman, A.D., Sprecher, I., Friday, J.B. & Ticktin, T. (2023) *Hawai'i nontimber forest products: cultural and economic foundations*. Gen. Tech. Rep. PNW-GTR-1011. Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Research Station, 68 pp.
https://doi.org/10.2737/PNW-GTR-1011.

Kuntze, O. (1891) *Revisio generum plantarum*. Vol. 2, Leipzig.

Lannuzel, G., Pouget, L., Bruy, D., Hequet, V., Meyer, S., Munzinger, J. & Gâteblé, G. (2022a) Mining rare Earth elements: Identifying the plant species most threatened by ore extraction in an insular hotspot. *Frontiers in Ecology and Evolution* 10: 952439.
https://doi.org/10.3389/fevo.2022.952439

Lannuzel, G., Bruy, D., Munzinger, J., Meyer, S., Fourdrain, A., Fogliani, B., Isnard, S., Hequet, V., Karnadi-Abdelkader, G., Warimavute, G. & Gâteblé, G. (2022b) *Rapport final*. Programme « ER Mines ». CNRT « Nickel & son environnement. 25 pp.

Lannuzel, G., Pignal, M. & Gâteblé, G. (2022c) Critical comments on the article by Wang *et al*. « Lectotypification of the name *Brachyscome neocaledonica* = *Pytinicarpa neocaledonica* (Asteraceae: Astereae) ». *Ukrainian Botanical Journal* 79 (2): 77-83». *Ukrainian Botanical Journal* 79 (5): 271-276.
https://doi.org/10.15407/ukrbotj79.05.271

Meyer, S., Birnbaum, P., Bruy, D., Cazé, H., Garnier, D., Gâteblé, G., Lannuzel, G., McCoy, S., Tanguy, V. & Veillon, J.-M. (2022) *The New Caledonia Plants RLA: Bringing botanists together for the conservation of the archipelago's crown jewel*. The Encyclopedia of Conservation, Imperiled, pp. 859-874.
https://doi.org/10.1016/B978-0-12-821139-7.00171-9

Middleton, D.J. (2000) Revision of *Alyxia* (Apocynaceae). Part 1 : Asia and Malesia. *Blumea* 45: 100-146. [https://repository.naturalis.nl/pub/524688]

Middleton, D.J. (2002) Revision of *Alyxia* (Apocynaceae). Part 2 : Pacific Islands and Australia. *Blumea* 47: 1-93. [https://repository.naturalis.nl/pub/524530]

Montrouzier, R.P. (1860) Flore de l'Ile Art, près de la Nouvelle-Calédonie. *Mémoires de l'Académie Royale des Sciences, Belles-lettres et Arts de Lyon* Sér. 2, 10: 173-254.

Morat, P. (2010) Les botanistes récolteurs en Nouvelle-Calédonie de 1774 à 2005. *Adansonia* sér. 3, 32 (2): 159-216.
https://doi.org/10.5252/a2010n2a1

Moore, S.L.M. (1921) Apocynaceae. A Systematic account of the plants collected in New Caledonia and the Isle of Pines by Prof. R. H. Compton, M.A., in 1914 – Part I. Flowering Plants (Angiosperms). *Botanical Journal of the Linnean Society* 45: 245-417.
https://doi.org/10.1111/j.1095-8339.1921.tb00125.x

Müller, J. (1870) Neue Apocyneen von Neu-Kaledonien. *Flora* 51: 168-172.

POWO (2023) Plants of the World Online. Facilitated by the Royal Botanic Gardens, Kew. Published on the Internet. Available from: http://www.plantsoftheworldonline.org/ (accessed 27 January 2023)

QGIS Development Team (2022) QGIS Geographic Information System. Open Source Geospatial Foundation Project. [http://qgis.osgeo.org]

Schlechter, R. (1906) Beiträge zur Kenntnis der Flora von Neu-Kaledonien. *Botanische Jahrbücher für Systematik und Pflanzengeographie* 1 39: 1-274.

Thiers, B. (2020 onwards) Index Herbariorum: a global directory of public herbaria and associated staff. New York Botanical Garden's virtual herbarium. Available from: http://sweetgum.nybg.org/science/ih (accessed 25 January 2023)

Turland, N.J., Wiersema, J.H., Barrie, F.R., Greuter, W., Hawksworth, D.L., Herendeen, P.S., Knapp, S., Kusber, W.-H., Li, D.-Z., Marhold, K., May, T.W., McNeill, J., Monro, A.M., Prado, J., Price, M.J. & Smith, G.F. (2018) International Code of Nomenclature for algae, fungi, and plants (Shenzhen Code) adopted by the Nineteenth International Botanical Congress Shenzhen, China, July 2017. Glashütten: Koeltz Botanical Books. *Regnum Vegetabile* 159: i-xxxviii + 1-254.
https://doi.org/10.12705/Code.2018

van Heurck, H. (1871) *Observationes botanicae et decriptiones plantarum novarum herbaria van Heurckiani*. 268 pp.

Whistler, W.A. (1990) Ethnobotany of the Cook Islands: the plants, their Maori names and their uses. *Allertonia* 5 (4): 347-424.
IUCN (2019) Guidelines for Using the IUCN Red List Categories and Criteria. Version 14. Prepared by the Standards and Petitions Committee. Available from: http://www.iucnredlist.org/documents/RedListGuidelines.pdf (accessed 18 November 2022)

Jost, X., Ansel, J.-L., Lecellier, G., Raharivelomanana, P. & Butaud, J-F. (2016) Ethnobotanical survey of cosmetic plants used in Marquesas Islands (French Polynesia). *Journal of Ethnobotany and Ethnomedicine* 12: 55.
https://doi.org/10.1186/s13002-016-0128-5

Kamelamela, K.L., Chamberlain, J., Lehman, A.D., Sprecher, I., Friday, J.B. & Ticktin, T. (2023) *Hawai'i nontimber forest products: cultural and economic foundations*. Gen. Tech. Rep. PNW-GTR-1011. Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Research Station, 68 pp.
https://doi.org/10.2737/PNW-GTR-1011.

Kuntze, O. (1891) *Revisio generum plantarum*. Vol. 2, Leipzig.

Lannuzel, G., Pouget, L., Bruy, D., Hequet, V., Meyer, S., Munzinger, J. & Gâteblé, G. (2022a) Mining rare Earth elements: Identifying the plant species most threatened by ore extraction in an insular hotspot. *Frontiers in Ecology and Evolution* 10: 952439.
https://doi.org/10.3389/fevo.2022.952439

Lannuzel, G., Bruy, D., Munzinger, J., Meyer, S., Fourdrain, A., Fogliani, B., Isnard, S., Hequet, V., Karnadi-Abdelkader, G., Warimavute, G. & Gâteblé, G. (2022b) *Rapport final*. Programme « ER Mines ». CNRT « Nickel & son environnement. 25 pp.

Lannuzel, G., Pignal, M. & Gâteblé, G. (2022c) Critical comments on the article by Wang *et al*. « Lectotypification of the name *Brachyscome neocaledonica* = *Pytinicarpa neocaledonica* (Asteraceae: Astereae) ». *Ukrainian Botanical Journal* 79 (2): 77-83». *Ukrainian Botanical Journal* 79 (5): 271-276.
https://doi.org/10.15407/ukrbotj79.05.271

Meyer, S., Birnbaum, P., Bruy, D., Cazé, H., Garnier, D., Gâteblé, G., Lannuzel, G., McCoy, S., Tanguy, V. & Veillon, J.-M. (2022) *The New Caledonia Plants RLA: Bringing botanists together for the conservation of the archipelago's crown jewel*. The Encyclopedia of Conservation, Imperiled, pp. 859-874.
https://doi.org/10.1016/B978-0-12-821139-7.00171-9

Middleton, D.J. (2000) Revision of *Alyxia* (Apocynaceae). Part 1 : Asia and Malesia. *Blumea* 45: 100-146. [https://repository.naturalis.nl/pub/524688]

Middleton, D.J. (2002) Revision of *Alyxia* (Apocynaceae). Part 2 : Pacific Islands and Australia. *Blumea* 47: 1-93. [https://repository.naturalis.nl/pub/524530]

Montrouzier, R.P. (1860) Flore de l'Ile Art, près de la Nouvelle-Calédonie. *Mémoires de l'Académie Royale des Sciences, Belles-lettres et Arts de Lyon* Sér. 2, 10: 173-254.

Morat, P. (2010) Les botanistes récolteurs en Nouvelle-Calédonie de 1774 à 2005. *Adansonia* sér. 3, 32 (2): 159-216.
https://doi.org/10.5252/a2010n2a1

Moore, S.L.M. (1921) Apocynaceae. A Systematic account of the plants collected in New Caledonia and the Isle of Pines by Prof. R. H. Compton, M.A., in 1914 – Part I. Flowering Plants (Angiosperms). *Botanical Journal of the Linnean Society* 45: 245-417.
https://doi.org/10.1111/j.1095-8339.1921.tb00125.x

Müller, J. (1870) Neue Apocyneen von Neu-Kaledonien. *Flora* 51: 168-172.

POWO (2023) Plants of the World Online. Facilitated by the Royal Botanic Gardens, Kew. Published on the Internet. Available from: http://www.plantsoftheworldonline.org/ (accessed 27 January 2023)

QGIS Development Team (2022) QGIS Geographic Information System. Open Source Geospatial Foundation Project. [http://qgis.osgeo.org]

Schlechter, R. (1906) Beiträge zur Kenntnis der Flora von Neu-Kaledonien. *Botanische Jahrbücher für Systematik und Pflanzengeographie* 1 39: 1-274.

Thiers, B. (2020 onwards) Index Herbariorum: a global directory of public herbaria and associated staff. New York Botanical Garden's virtual herbarium. Available from: http://sweetgum.nybg.org/science/ih (accessed 25 January 2023)

Turland, N.J., Wiersema, J.H., Barrie, F.R., Greuter, W., Hawksworth, D.L., Herendeen, P.S., Knapp, S., Kusber, W.-H., Li, D.-Z., Marhold, K., May, T.W., McNeill, J., Monro, A.M., Prado, J., Price, M.J. & Smith, G.F. (2018) International Code of Nomenclature for algae, fungi, and plants (Shenzhen Code) adopted by the Nineteenth International Botanical Congress Shenzhen, China, July 2017. Glashütten: Koeltz Botanical Books. *Regnum Vegetabile* 159: i-xxxviii + 1-254.
https://doi.org/10.12705/Code.2018

van Heurck, H. (1871) *Observationes botanicae et decriptiones plantarum novarum herbaria van Heurckiani*. 268 pp.

Whistler, W.A. (1990) Ethnobotany of the Cook Islands: the plants, their Maori names and their uses. *Allertonia* 5 (4): 347-424.
APPENDIX.

<table><thead><tr><th></th><th>Branchlet shape</th><th>Branchlet colour</th><th>Branchlet pubescence</th><th>Leave per whorl</th><th>Leave shape</th><th>Leave mucronate</th><th>Leave pubescence</th><th>Leaf size</th><th>Leave texture</th><th>Leave colour</th><th>Secondary venation</th><th>Petiole length</th></tr></thead><tbody><tr><td>Alyxia baillonii</td><td>Weakly angled</td><td>Green</td><td>Glabrous</td><td>2 or 3</td><td>Elliptic, obovate or spathulate</td><td>No</td><td>Glabrous</td><td>2.6-10 x 1.1-4.7 cm</td><td>Coriaceous</td><td>Discolor, dark green above, glaucous beneath</td><td>Obscure to weakly prominent beneath</td><td>0.3-1.4 cm</td></tr><tr><td>Alyxia caletioides</td><td>Weakly angled</td><td>Brown</td><td>Puberulent to tomentose</td><td>3 or 4</td><td>Linear or narrowly elliptic</td><td>No</td><td>Pubescent</td><td>0.5-2.2 x 0.15-0.45 cm</td><td>Coriaceous</td><td>Concolour</td><td>Obscure</td><td>0.1 cm</td></tr><tr><td>Alyxia celastrinea</td><td>Weakly or strongly angled</td><td>Green to reddish</td><td>Glabrous</td><td>3</td><td>Obovate</td><td>No</td><td>Glabrous</td><td>2.3-5.5 x 1-2.2 cm</td><td>Subcoriaceous to coriaceous</td><td>Concolour</td><td>Obscure</td><td>0.2-0.4 cm</td></tr><tr><td>Alyxia clusiophylla</td><td>Weakly or strongly angled</td><td>Brown</td><td>Sparingly to densely pubescent or glabrescent</td><td>3</td><td>Linear, elliptic, broadly elliptic or spathulate</td><td>No</td><td>Sparingly puberulent only on midrib</td><td>21-13 x 0.8-2.7 cm</td><td>Thickly coriaceous</td><td>Discolor, dark green above, pale green beneath</td><td>Obscure</td><td>0.4-0.7 cm</td></tr><tr><td>Alyxia cylindrocarpa</td><td>Weakly angled</td><td>Green</td><td>Glabrous</td><td>2</td><td>Narrowly elliptic, elliptic or ovate</td><td>Yes</td><td>Glabrous</td><td>0.8-8.4 x 0.3-3.3 cm</td><td>Subcoriaceous or chartaceous</td><td>Concolour</td><td>Weakly distinguishable</td><td>0.2-0.7 cm</td></tr><tr><td>Alyxia dolioliflora</td><td>Weakly or strongly angled</td><td>Reddish</td><td>Glabrous</td><td>3</td><td>Linear</td><td>No</td><td>Glabrous</td><td>2.2-4.7 x 0.2-0.5 cm</td><td>Coriaceous</td><td>Concolour</td><td>Obscure</td><td>0.1-0.4 cm</td></tr><tr><td>Alyxia glaucophylla</td><td>Weakly angled</td><td>Brown to blackish</td><td>Sparingly to densely pubescent</td><td>3</td><td>Broadly elliptic, ovate or spathulate</td><td>No</td><td>Glabrous</td><td>1-6.1 x 0.6-3.9 cm</td><td>Coriaceous</td><td>Slightly discolor, pale green beneath</td><td>Obscure</td><td>0.2-0.6 cm</td></tr><tr><td>Alyxia humboldtiensis</td><td>Strongly angled</td><td>Green</td><td>Puberulent</td><td>3 to 5</td><td>Obovate or spathulate, strongly revolute</td><td>Yes</td><td>Both surfaces minutely pubescent</td><td>2.4-2.7 x 1.3-1.8 cm</td><td>Thickly coriaceous</td><td>Green</td><td>Obscure</td><td>null</td></tr><tr><td>Alyxia hurlimannii</td><td>Weakly or strongly angled</td><td>Greyish</td><td>Glabrous</td><td>3 or 4</td><td>Narrowly obovate or elliptic</td><td>No</td><td>Glabrous</td><td>1.6-6.5 x 0.3-2.6 cm</td><td>Coriaceous</td><td>Concolour</td><td>Obscure</td><td>0.3-0.5 cm</td></tr><tr><td>Alyxia kaalaensis</td><td>Weakly angled</td><td>Brown</td><td>Densely pubescent on young parts</td><td>3</td><td>Oblong to orbicular</td><td>No</td><td>Glabrous</td><td>0.6-1 x 0.6-1 cm</td><td>Coriaceous</td><td>Slightly discolor, pale green beneath</td><td>Obscure</td><td>0.1-0.3 cm</td></tr><tr><td>Alyxia leucogyne</td><td>Strongly angled</td><td>Green</td><td>Glabrous or sparsely puberulent or glabrescent</td><td>4 or 5</td><td>Obovate or spathulate, margin weakly to strongly inrolled</td><td>No</td><td>Glabrous</td><td>3.2-16.4 x 1.9-6.2 cm</td><td>Coriaceous</td><td>Green</td><td>Secondary veins weakly prominent</td><td>1-2 cm</td></tr></tbody></table>

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APPENDIX.

<table><thead><tr><th></th><th>Branchlet shape</th><th>Branchlet colour</th><th>Branchlet pubescence</th><th>Leave per whorl</th><th>Leave shape</th><th>Leave mucronate</th><th>Leave pubescence</th><th>Leaf size</th><th>Leave texture</th><th>Leave colour</th><th>Secondary venation</th><th>Petiole length</th></tr></thead><tbody><tr><td>Alyxia baillonii</td><td>Weakly angled</td><td>Green</td><td>Glabrous</td><td>2 or 3</td><td>Elliptic, obovate or spathulate</td><td>No</td><td>Glabrous</td><td>2.6-10 × 1.1-4.7 cm</td><td>Coriaceous</td><td>Discolor, dark green above, glaucous beneath</td><td>Obscure to weakly prominent beneath</td><td>0.3-1.4 cm</td></tr><tr><td>Alyxia caletioides</td><td>Weakly angled</td><td>Brown</td><td>Puberulent to tomentose</td><td>3 or 4</td><td>Linear or narrowly elliptic</td><td>No</td><td>Pubescent</td><td>0.5-2.2 × 0.15-0.45 cm</td><td>Coriaceous</td><td>Concolour</td><td>Obscure</td><td>0.1 cm</td></tr><tr><td>Alyxia celastrinea</td><td>Weakly or strongly angled</td><td>Green to reddish</td><td>Glabrous</td><td>3</td><td>Obovate</td><td>No</td><td>Glabrous</td><td>2.3-5.5 × 1-2.2 cm</td><td>Subcoriaceous to coriaceous</td><td>Concolour</td><td>Obscure</td><td>0.2-0.4 cm</td></tr><tr><td>Alyxia clusiophylla</td><td>Weakly or strongly angled</td><td>Brown</td><td>Sparingly to densely pubescent or glabrescent</td><td>3</td><td>Linear, elliptic, broadly elliptic or spathulate</td><td>No</td><td>Sparingly puberulent only on midrib</td><td>21-13 × 0.8-2.7 cm</td><td>Thickly coriaceous</td><td>Discolor, dark green above, pale green beneath</td><td>Obscure</td><td>0.4-0.7 cm</td></tr><tr><td>Alyxia cylindrocarpa</td><td>Weakly angled</td><td>Green</td><td>Glabrous</td><td>2</td><td>Narrowly elliptic, elliptic or ovate</td><td>Yes</td><td>Glabrous</td><td>0.8-8.4 × 0.3-3.3 cm</td><td>Subcoriaceous or chartaceous</td><td>Concolour</td><td>Weakly distinguishable</td><td>0.2-0.7 cm</td></tr><tr><td>Alyxia dolioliflora</td><td>Weakly or strongly angled</td><td>Reddish</td><td>Glabrous</td><td>3</td><td>Linear</td><td>No</td><td>Glabrous</td><td>2.2-4.7 × 0.2-0.5 cm</td><td>Coriaceous</td><td>Concolour</td><td>Obscure</td><td>0.1-0.4 cm</td></tr><tr><td>Alyxia glaucophylla</td><td>Weakly angled</td><td>Brown to blackish</td><td>Sparingly to densely pubescent</td><td>3</td><td>Broadly elliptic, ovate or spathulate</td><td>No</td><td>Glabrous</td><td>1-6.1 × 0.6-3.9 cm</td><td>Coriaceous</td><td>Slightly discolor, pale green beneath</td><td>Obscure</td><td>0.2-0.6 cm</td></tr><tr><td>Alyxia humboldtiensis</td><td>Strongly angled</td><td>Green</td><td>Puberulent</td><td>3 to 5</td><td>Obovate or spathulate, strongly revolute</td><td>Yes</td><td>Both surfaces minutely pubescent</td><td>2.4-2.7 × 1.3-1.8 cm</td><td>Thickly coriaceous</td><td>Green</td><td>Obscure</td><td>null</td></tr><tr><td>Alyxia hurlimannii</td><td>Weakly or strongly angled</td><td>Greyish</td><td>Glabrous</td><td>3 or 4</td><td>Narrowly obovate or elliptic</td><td>No</td><td>Glabrous</td><td>1.6-6.5 × 0.3-2.6 cm</td><td>Coriaceous</td><td>Concolour</td><td>Obscure</td><td>0.3-0.5 cm</td></tr><tr><td>Alyxia kaalaensis</td><td>Weakly angled</td><td>Brown</td><td>Densely pubescent on young parts</td><td>3</td><td>Oblong to orbicular</td><td>No</td><td>Glabrous</td><td>0.6-1 × 0.6-1 cm</td><td>Coriaceous</td><td>Slightly discolor, pale green beneath</td><td>Obscure</td><td>0.1-0.3 cm</td></tr><tr><td>Alyxia leucogyne</td><td>Strongly angled</td><td>Green</td><td>Glabrous or sparsely puberulent or glabrescent</td><td>4 or 5</td><td>Obovate or spathulate, margin weakly to strongly inrolled</td><td>No</td><td>Glabrous</td><td>3.2-16.4 × 1.9-6.2 cm</td><td>Coriaceous</td><td>Green</td><td>Secondary veins weakly prominent</td><td>1-2 cm</td></tr></tbody></table>

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APPENDIX. (Continued)

<table><thead><tr><th></th><th>Branchlet shape</th><th>Branchlet colour</th><th>Branchlet pubescence</th><th>Leave per whorl</th><th>Leave shape</th><th>Leave mucronate</th><th>Leave pubescence</th><th>Leaf size</th><th>Leave texture</th><th>Leave colour</th><th>Secondary venation</th><th>Petiole length</th></tr></thead><tbody><tr><td><i>Alyxia loeseneriana</i></td><td>Weakly or strongly angled</td><td>Green to brownish</td><td>Glabrous</td><td>2 or 4</td><td>Elliptic or obovate</td><td>No</td><td>Glabrous</td><td>2.4–10.4 × 1–3.8 cm</td><td>Coriaceous to chartaceous</td><td>Slightly discolor, pale green beneath</td><td>Weakly to clearly visible beneath</td><td>0.3–1.1 cm</td></tr><tr><td><i>Alyxia margaretiae</i></td><td>Terete to weakly angled</td><td>Green</td><td>Glabrous</td><td>2</td><td>Elliptic, ovate or oblong</td><td>Yes</td><td>Glabrous</td><td>3.3–10.3 × 0.8–4.8 cm</td><td>Coriaceous to thickly coriaceous</td><td>Concolour</td><td>Weakly distinguishable to obscure</td><td>0.4–1.3 cm</td></tr><tr><td><i>Alyxia minimiflora</i></td><td>Weakly angled</td><td>Blackish</td><td>Densely pubescent</td><td>3</td><td>Linear</td><td>No</td><td>Looking lustrous but with sparse very short hairs</td><td>1–3 × 0.1–0.2 cm</td><td>Subcoriaceous</td><td>Slightly discolor, pale green beneath</td><td>Obscure</td><td>0.1–0.3 cm</td></tr><tr><td><i>Alyxia mucronata</i></td><td>Weakly angled</td><td>Green</td><td>Sparsely pubescent to tomentose or glabrescent</td><td>2</td><td>Elliptic or ovate</td><td>Yes</td><td>Pubescent or glabrous beneath</td><td>1–3.5 × 0.6–1.9 cm</td><td>Gloriaceous</td><td>Green</td><td>Weakly distinguishable to obscure</td><td>0.1–0.3 cm</td></tr><tr><td><i>Alyxia nummularia</i></td><td>Weakly angled</td><td>Brown</td><td>Densely pubescent</td><td>3</td><td>Orbicular</td><td>No</td><td>Densely pubescent</td><td>0.9–2.6 × 0.6–1.7 cm</td><td>Gloriaceous</td><td>Concolour</td><td>Obscure</td><td>0.1–0.2 cm</td></tr><tr><td><i>Alyxia oppositifolia</i></td><td>Weakly angled</td><td>Green</td><td>Glabrous to densely pubescent</td><td>2 or 3</td><td>Linear to lanceolate</td><td>No</td><td>Glabrous to densely pubescent</td><td>0.8–3.9 × 0.2–1.2 cm</td><td>Chartaceous to coriaceous</td><td>Concolour</td><td>Obscure to weakly prominent beneath</td><td>0.1–0.2 cm</td></tr><tr><td><i>Alyxia oubatchensis</i></td><td>Weakly angled</td><td>Green</td><td>Glabrous to densely puberulent</td><td>3</td><td>Elliptic, obovate or spathulate</td><td>No</td><td>Sparsely puberulent beneath</td><td>1.7–10 × 1–4.5 cm</td><td>Gloriaceous</td><td>Slightly discolor, pale green beneath</td><td>Strongly to weakly distinguishable beneath</td><td>0.4–1 cm</td></tr><tr><td><i>Alyxia paniensis</i></td><td>Weakly angled</td><td>Brown</td><td>Glabrous</td><td>3</td><td>Elliptic</td><td>No</td><td>Glabrous</td><td>5.3–8.4 × 2.8–4 cm</td><td>Chartaceous</td><td>Concolour</td><td>Weakly to clearly visible beneath</td><td>0.6–1.3 cm</td></tr><tr><td><i>Alyxia podocarpa</i></td><td>Weakly angled</td><td>Green</td><td>Sparsely pubescent</td><td>3</td><td>Elliptic to obovate</td><td>No</td><td>Glabrous beneath, glabrous or puberulent only on midrib above</td><td>1.5–8 × 0.5–1.8 cm</td><td>Gloriaceous</td><td>Slightly discolor, pale green beneath</td><td>Weakly distinguishable to obscure</td><td>0.2–0.7 cm</td></tr></tbody></table>

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<table><thead><tr><th></th><th>Branchlet shape</th><th>Branchlet colour</th><th>Branchlet pubescence</th><th>Leave per whorl</th><th>Leave shape</th><th>Leave mucronate</th><th>Leave pubescence</th><th>Leaf size</th><th>Leave texture</th><th>Leave colour</th><th>Secondary venation</th><th>Petiole length</th></tr></thead><tbody><tr><td><i>Alyxia loeseneriana</i></td><td>Weakly or strongly angled</td><td>Green to brownish</td><td>Glabrous</td><td>2 or 4</td><td>Elliptic or obovate</td><td>No</td><td>Glabrous</td><td>2.4–10.4 × 1–3.8 cm</td><td>Coriaceous to chartaceous</td><td>Slightly discolor, pale green beneath</td><td>Weakly to clearly visible beneath</td><td>0.3–1.1 cm</td></tr><tr><td><i>Alyxia margaretiae</i></td><td>Terete to weakly angled</td><td>Green</td><td>Glabrous</td><td>2</td><td>Elliptic, ovate or oblong</td><td>Yes</td><td>Glabrous</td><td>3.3–10.3 × 0.8–4.8 cm</td><td>Coriaceous to thickly coriaceous</td><td>Concolour</td><td>Weakly distinguishable to obscure</td><td>0.4–1.3 cm</td></tr><tr><td><i>Alyxia minimiflora</i></td><td>Weakly angled</td><td>Blackish</td><td>Densely pubescent</td><td>3</td><td>Linear</td><td>No</td><td>Looking lustrous but with sparse very short hairs</td><td>1–3 × 0.1–0.2 cm</td><td>Subcoriaceous</td><td>Slightly discolor, pale green beneath</td><td>Obscure</td><td>0.1–0.3 cm</td></tr><tr><td><i>Alyxia mucronata</i></td><td>Weakly angled</td><td>Green</td><td>Sparsely pubescent to tomentose or glabrescent</td><td>2</td><td>Elliptic or ovate</td><td>Yes</td><td>Pubescent or glabrous beneath</td><td>1–3.5 × 0.6–1.9 cm</td><td>Gloriaceous</td><td>Green</td><td>Weakly distinguishable to obscure</td><td>0.1–0.3 cm</td></tr><tr><td><i>Alyxia nummularia</i></td><td>Weakly angled</td><td>Brown</td><td>Densely pubescent</td><td>3</td><td>Orbicular</td><td>No</td><td>Densely pubescent</td><td>0.9–2.6 × 0.6–1.7 cm</td><td>Gloriaceous</td><td>Concolour</td><td>Obscure</td><td>0.1–0.2 cm</td></tr><tr><td><i>Alyxia oppositifolia</i></td><td>Weakly angled</td><td>Green</td><td>Glabrous to densely pubescent</td><td>2 or 3</td><td>Linear to lanceolate</td><td>No</td><td>Glabrous to densely pubescent</td><td>0.8–3.9 × 0.2–1.2 cm</td><td>Chartaceous to coriaceous</td><td>Concolour</td><td>Obscure to weakly prominent beneath</td><td>0.1–0.2 cm</td></tr><tr><td><i>Alyxia oubatchensis</i></td><td>Weakly angled</td><td>Green</td><td>Glabrous to densely puberulent</td><td>3</td><td>Elliptic, obovate or spathulate</td><td>No</td><td>Sparsely puberulent beneath</td><td>1.7–10 × 1–4.5 cm</td><td>Gloriaceous</td><td>Slightly discolor, pale green beneath</td><td>Strongly to weakly distinguishable beneath</td><td>0.4–1 cm</td></tr><tr><td><i>Alyxia paniensis</i></td><td>Weakly angled</td><td>Brown</td><td>Glabrous</td><td>3</td><td>Elliptic</td><td>No</td><td>Glabrous</td><td>5.3–8.4 × 2.8–4 cm</td><td>Chartaceous</td><td>Concolour</td><td>Weakly to clearly visible beneath</td><td>0.6–1.3 cm</td></tr><tr><td><i>Alyxia podocarpa</i></td><td>Weakly angled</td><td>Green</td><td>Sparsely pubescent</td><td>3</td><td>Elliptic to obovate</td><td>No</td><td>Glabrous beneath, glabrous or puberulent only on midrib above</td><td>1.5–8 × 0.5–1.8 cm</td><td>Gloriaceous</td><td>Slightly discolor, pale green beneath</td><td>Weakly distinguishable to obscure</td><td>0.2–0.7 cm</td></tr></tbody></table>

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APPENDIX. (Continued)

<table><thead><tr><th></th><th>Branchlet shape</th><th>Branchlet colour</th><th>Branchlet pubescence</th><th>Leave per whorl</th><th>Leave shape</th><th>Leave mucronate</th><th>Leave pubescence</th><th>Leaf size</th><th>Leave texture</th><th>Leave colour</th><th>Secondary venation</th><th>Petiole length</th></tr></thead><tbody><tr><td>Alyxia poyaensis</td><td>Strongly angled</td><td>Red</td><td>Glabrous</td><td>2</td><td>Narrowly to broadly elliptic</td><td>Yes</td><td>Glabrous</td><td>1.1–5.4 × 0.2–2.1 cm</td><td>Coriaceous</td><td>Slightly discolor, pale green beneath</td><td>Weakly distinguishable to obscure</td><td>0.3–0.5 cm</td></tr><tr><td>Alyxia pseudoserpentina</td><td>Weakly angled</td><td>Green to brownish</td><td>Glabrous</td><td>3</td><td>Oblong</td><td>No</td><td>Glabrous</td><td>3–4.7 × 0.6–0.7 cm</td><td>Chartaceous</td><td>Concolour</td><td>Obscure</td><td>0.2–0.3 cm</td></tr><tr><td>Alyxia rosmarinifolia</td><td>Weakly or strongly angled</td><td>Reddish</td><td>Glabrous</td><td>3</td><td>Linear</td><td>No</td><td>Glabrous</td><td>1.7–3.8 × 0.1–0.3 cm</td><td>Coriaceous</td><td>Concolour</td><td>Obscure</td><td>0.1–0.3 cm</td></tr><tr><td>Alyxia rubicaulis</td><td>Weakly angled</td><td>Red</td><td>Glabrous</td><td>2</td><td>Elliptic or ovate</td><td>Yes</td><td>Glabrous</td><td>1.4–8.2 × 0.7–3.2 cm</td><td>Coriaceous to thickly coriaceous</td><td>Concolour</td><td>Weakly distinguishable</td><td>0.6–1.2 cm</td></tr><tr><td>Alyxia sarasinii</td><td>Weakly angled</td><td>Green</td><td>Glabrous to densely and minutely pubescent</td><td>3</td><td>Elliptic or obovate</td><td>No</td><td>Densely pubescent beneath, above glabrous</td><td>0.8–2.4 × 0.3–1 cm</td><td>Thickly coriaceous</td><td>Slightly discolor, pale green beneath</td><td>Weakly distinguishable to obscure</td><td>0.2–0.5 cm</td></tr><tr><td>Alyxia spathulata</td><td>Weakly angled</td><td>Blackish</td><td>Glabrous</td><td>2</td><td>Spathulate</td><td>No</td><td>Glabrous</td><td>1.3–2.1 × 3.6–5.7 cm</td><td>Coriaceous</td><td>Concolour</td><td>Obscure</td><td>0.2–0.3 cm</td></tr><tr><td>Alyxia stellata</td><td>Terete, weakly or strongly angled</td><td>Green to brownish</td><td>Glabrous to densely and minutely puberulent</td><td>3</td><td>Linear, narrowly to broadly elliptic, ovate, obovate, or lanceolate</td><td>No</td><td>Glabrous</td><td>2.8–3.7 × 1.1–1.8 cm</td><td>Coriaceous to chartaceous</td><td>Concolour</td><td>Obscure</td><td>0–0.1 cm</td></tr><tr><td>Alyxia tisserantii</td><td>Weakly or strongly angled</td><td>Reddish</td><td>Glabrous</td><td>3</td><td>Obovate</td><td>No</td><td>Glabrous</td><td>2.3–3 × 0.7–1 cm</td><td>Coriaceous</td><td>Concolour</td><td>Obscure</td><td>0.1–0.4 cm</td></tr><tr><td>Alyxia torquata</td><td>Terete to weakly angled</td><td>Green to brownish</td><td>Glabrous</td><td>3</td><td>Elliptic</td><td>No</td><td>Glabrous</td><td>1.5–8.5 × 0.7–3.1</td><td>Chartaceous</td><td>Concolour</td><td>Obscure</td><td>0.1–0.2 cm</td></tr><tr><td>Alyxia urceolata</td><td>Weakly angled</td><td>Green to blackish</td><td>Young puberulent then glabrous</td><td>3</td><td>Linear</td><td>No</td><td>Puberulent</td><td>0.9–1.4 × 0.15–0.25 cm</td><td>Subcoriaceous</td><td>Slightly discolor, pale green beneath</td><td>Obscure</td><td>0.1–0.2 cm</td></tr><tr><td>Alyxia veillonii</td><td>Strongly angled</td><td>Reddish</td><td>Glabrous</td><td>3</td><td>Elliptic</td><td>No</td><td>Glabrous</td><td>3–5.3 × 0.9–2.4 cm</td><td>Coriaceous</td><td>Slightly discolor, pale green beneath</td><td>Obscure</td><td>0.3–0.4 cm</td></tr></tbody></table>

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APPENDIX. (Continued)

<table><thead><tr><th></th><th>Branchlet shape</th><th>Branchlet colour</th><th>Branchlet pubescence</th><th>Leave per whorl</th><th>Leave shape</th><th>Leave mucronate</th><th>Leave pubescence</th><th>Leaf size</th><th>Leave texture</th><th>Leave colour</th><th>Secondary venation</th><th>Petiole length</th></tr></thead><tbody><tr><td>Alyxia poyaensis</td><td>Strongly angled</td><td>Red</td><td>Glabrous</td><td>2</td><td>Narrowly to broadly elliptic</td><td>Yes</td><td>Glabrous</td><td>1.1–5.4 × 0.2–2.1 cm</td><td>Coriaceous</td><td>Slightly discolor, pale green beneath</td><td>Weakly distinguishable to obscure</td><td>0.3–0.5 cm</td></tr><tr><td>Alyxia pseudoserpentina</td><td>Weakly angled</td><td>Green to brownish</td><td>Glabrous</td><td>3</td><td>Oblong</td><td>No</td><td>Glabrous</td><td>3–4.7 × 0.6–0.7 cm</td><td>Chartaceous</td><td>Concolour</td><td>Obscure</td><td>0.2–0.3 cm</td></tr><tr><td>Alyxia rosmarinifolia</td><td>Weakly or strongly angled</td><td>Reddish</td><td>Glabrous</td><td>3</td><td>Linear</td><td>No</td><td>Glabrous</td><td>1.7–3.8 × 0.1–0.3 cm</td><td>Coriaceous</td><td>Concolour</td><td>Obscure</td><td>0.1–0.3 cm</td></tr><tr><td>Alyxia rubicaulis</td><td>Weakly angled</td><td>Red</td><td>Glabrous</td><td>2</td><td>Elliptic or ovate</td><td>Yes</td><td>Glabrous</td><td>1.4–8.2 × 0.7–3.2 cm</td><td>Coriaceous to thickly coriaceous</td><td>Concolour</td><td>Weakly distinguishable</td><td>0.6–1.2 cm</td></tr><tr><td>Alyxia sarasinii</td><td>Weakly angled</td><td>Green</td><td>Glabrous to densely and minutely pubescent</td><td>3</td><td>Elliptic or obovate</td><td>No</td><td>Densely pubescent beneath, above glabrous</td><td>0.8–2.4 × 0.3–1 cm</td><td>Thickly coriaceous</td><td>Slightly discolor, pale green beneath</td><td>Weakly distinguishable to obscure</td><td>0.2–0.5 cm</td></tr><tr><td>Alyxia spathulata</td><td>Weakly angled</td><td>Blackish</td><td>Glabrous</td><td>2</td><td>Spathulate</td><td>No</td><td>Glabrous</td><td>1.3–2.1 × 3.6–5.7 cm</td><td>Coriaceous</td><td>Concolour</td><td>Obscure</td><td>0.2–0.3 cm</td></tr><tr><td>Alyxia stellata</td><td>Terete, weakly or strongly angled</td><td>Green to brownish</td><td>Glabrous to densely and minutely puberulent</td><td>3</td><td>Linear, narrowly to broadly elliptic, ovate, obovate, or lanceolate</td><td>No</td><td>Glabrous</td><td>2.8–3.7 × 1.1–1.8 cm</td><td>Coriaceous to chartaceous</td><td>Concolour</td><td>Obscure</td><td>0–0.1 cm</td></tr><tr><td>Alyxia tisserantii</td><td>Weakly or strongly angled</td><td>Reddish</td><td>Glabrous</td><td>3</td><td>Obovate</td><td>No</td><td>Glabrous</td><td>2.3–3 × 0.7–1 cm</td><td>Coriaceous</td><td>Concolour</td><td>Obscure</td><td>0.1–0.4 cm</td></tr><tr><td>Alyxia torquata</td><td>Terete to weakly angled</td><td>Green to brownish</td><td>Glabrous</td><td>3</td><td>Elliptic</td><td>No</td><td>Glabrous</td><td>1.5–8.5 × 0.7–3.1</td><td>Chartaceous</td><td>Concolour</td><td>Obscure</td><td>0.1–0.2 cm</td></tr><tr><td>Alyxia urceolata</td><td>Weakly angled</td><td>Green to blackish</td><td>Young puberulent then glabrous</td><td>3</td><td>Linear</td><td>No</td><td>Puberulent</td><td>0.9–1.4 × 0.15–0.25 cm</td><td>Subcoriaceous</td><td>Slightly discolor, pale green beneath</td><td>Obscure</td><td>0.1–0.2 cm</td></tr><tr><td>Alyxia veillonii</td><td>Strongly angled</td><td>Reddish</td><td>Glabrous</td><td>3</td><td>Elliptic</td><td>No</td><td>Glabrous</td><td>3–5.3 × 0.9–2.4 cm</td><td>Coriaceous</td><td>Slightly discolor, pale green beneath</td><td>Obscure</td><td>0.3–0.4 cm</td></tr></tbody></table>

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APPENDIX. (Continued)

<table><thead><tr><th></th><th>Inflorescence</th><th>Inflorescence pubescence</th><th>Inflorescence position</th><th>Peduncle length</th><th>Peduncle shape</th><th>Pedicel length</th><th>Corolla tube length</th><th>Corolla tube pubescence outside</th><th>Sepal shape</th><th>Ovary pubescence</th><th>Stamen insertion distance from corolla base</th><th>Fruit article shape</th><th>Fruit article length</th></tr></thead><tbody><tr><td>Alyxia baillontii</td><td>4- or 5-flowered, a simple unbranched pleiochasmum</td><td>Glabrous or sparsely pubescent</td><td>Axillary</td><td>0-0.3 cm</td><td>Weakly flattened</td><td>1.2-2.8 mm</td><td>5.5-9 mm</td><td>Glabrous</td><td>Ovate, apex acute</td><td>Densely pubescent all over, or around base only</td><td>4.2-7.2 mm</td><td>Ellipsoid of fusiform</td><td>6.3-23.5 mm</td></tr><tr><td>Alyxia caletioides</td><td>Solitary flower</td><td>null</td><td>Subterminal ot terminal</td><td>0</td><td>null</td><td>1 mm</td><td>5.3-8 mm</td><td>Glabrous</td><td>Ovate, apex acute</td><td>Densely pubescent all over</td><td>4.3-5.4 mm</td><td>Ellipsoid or subglobose</td><td>4.5-7 mm</td></tr><tr><td>Alyxia celastrinea</td><td>4- to 5- flowered simple pleiochasmum</td><td>Glabrous</td><td>Axillary</td><td>0.5-0.6 cm</td><td>Weakly flattened</td><td>0.3-0.8 mm</td><td>2.3-2.8 mm</td><td>Glabrous</td><td>Ovate, apex obtuse to rounded</td><td>Hairy around base</td><td>1.8 mm</td><td>Globose to subglobose, fleshy</td><td>7.3-9.1 mm</td></tr><tr><td>Alyxia clusiophylla</td><td>4-flowered, a simple unbranched pleiochasmum</td><td>Sparately pubescent</td><td>Axillary</td><td>0.6-1 cm</td><td>Weakly flattened</td><td>1-5.5 mm</td><td>3.7-5.5 mm</td><td>Glabrous</td><td>Lanceolate, apex acute to acuminate</td><td>Densely pubescent all over to pubescent around base only</td><td>3.7-4.2 mm</td><td>Ellipsoid or subglobose</td><td>6-7 mm</td></tr><tr><td>Alyxia cylindrocarpa</td><td>1-3 flowered</td><td>Glabrous</td><td>Variable</td><td>0.1-0.7 cm</td><td>Rounded</td><td>1.2-2.2 mm</td><td>7.7-10.2 mm</td><td>Glabrous</td><td>Ovate, apex acute or acuminate</td><td>Densely pubescent all over or only at top</td><td>6.4-7.2 mm</td><td>Cylindrical or narrowly ellipsoid</td><td>16-36.5 mm</td></tr><tr><td>Alyxia dolioliflora</td><td>4-flowered simple pleiochasmum</td><td>Glabrous</td><td>Axillary</td><td>0.2-0.9 cm</td><td>Weakly flattened</td><td>0.2-1 mm</td><td>2.9-4.1 mm</td><td>Glabrous</td><td>Narrowly triangular, apex acute</td><td>Densely pubescent all over</td><td>ca. 2 mm</td><td>Ellipsoid</td><td>6.8-9.5 mm</td></tr><tr><td>Alyxia glaucophylla</td><td>3- to 6- flowered simple pleiochasmum, sometime with 1 or 2 internode</td><td>Sparately to densely puberulent</td><td>Axillary</td><td>0.2-0.5 cm</td><td>Weakly flattened</td><td>1.3-3 mm</td><td>3.6-5.1 mm</td><td>Glabrous or sparsely puberulent around top of tube</td><td>Ovate, apex acute</td><td>Densely pubescent all over</td><td>2.7-3.6 mm</td><td>Globose</td><td>8-16 mm</td></tr><tr><td>Alyxia humboldtiensis</td><td>Reduced and sessile to subsessile dichasial cyme</td><td>Sparately pubescent</td><td>Axillary</td><td>0-0.1 cm</td><td>Rounded</td><td>null to ca. 0.5 mm</td><td>4.5 mm</td><td>Glabrous</td><td>Narrowly triangular</td><td>Very hairy at base</td><td>ca. 3 mm</td><td>Fusiform</td><td>Mature fruit unknown</td></tr></tbody></table>

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APPENDIX. (Continued)

<table><thead><tr><th></th><th>Inflorescence</th><th>Inflorescence pubescence</th><th>Inflorescence position</th><th>Peduncle length</th><th>Peduncle shape</th><th>Pedicel length</th><th>Corolla tube length</th><th>Corolla tube pubescence outside</th><th>Sepal shape</th><th>Ovary pubescence</th><th>Stamen insertion distance from corolla base</th><th>Fruit article shape</th><th>Fruit article length</th></tr></thead><tbody><tr><td><i>Alyxia baillontii</i></td><td>4- or 5-flowered, a simple unbranched pleiochasmum</td><td>Glabrous or sparsely pubescent</td><td>Axillary</td><td>0-0.3 cm</td><td>Weakly flattened</td><td>1.2-2.8 mm</td><td>5.5-9 mm</td><td>Glabrous</td><td>Ovate, apex acute</td><td>Densely pubescent all over, or around base only</td><td>4.2-7.2 mm</td><td>Ellipsoid of fusiform</td><td>6.3-23.5 mm</td></tr><tr><td><i>Alyxia caletioides</i></td><td>Solitary flower</td><td>null</td><td>Subterminal ot terminal</td><td>0</td><td>null</td><td>1 mm</td><td>5.3-8 mm</td><td>Glabrous</td><td>Ovate, apex acute</td><td>Densely pubescent all over</td><td>4.3-5.4 mm</td><td>Ellipsoid or subglobose</td><td>4.5-7 mm</td></tr><tr><td><i>Alyxia celastrinea</i></td><td>4- to 5- flowered simple pleiochasmum</td><td>Glabrous</td><td>Axillary</td><td>0.5-0.6 cm</td><td>Weakly flattened</td><td>0.3-0.8 mm</td><td>2.3-2.8 mm</td><td>Glabrous</td><td>Ovate, apex obtuse to rounded</td><td>Hairy around base</td><td>1.8 mm</td><td>Globose to subglobose, fleshy</td><td>7.3-9.1 mm</td></tr><tr><td><i>Alyxia clusiophylla</i></td><td>4-flowered, a simple unbranched pleiochasmum</td><td>Sparsely pubescent</td><td>Axillary</td><td>0.6-1 cm</td><td>Weakly flattened</td><td>1-5.5 mm</td><td>3.7-5.5 mm</td><td>Glabrous</td><td>Lanceolate, apex acute to acuminate</td><td>Densely pubescent all over to pubescent around base only</td><td>3.7-4.2 mm</td><td>Ellipsoid or subglobose</td><td>6-7 mm</td></tr><tr><td><i>Alyxia cylindrocarpa</i></td><td>1-3 flowered</td><td>Glabrous</td><td>Variable</td><td>0.1-0.7 cm</td><td>Rounded</td><td>1.2-2.2 mm</td><td>7.7-10.2 mm</td><td>Glabrous</td><td>Ovate, apex acute or acuminate</td><td>Densely pubescent all over or only at top</td><td>6.4-7.2 mm</td><td>Cylindrical or narrowly ellipsoid</td><td>16-36.5 mm</td></tr><tr><td><i>Alyxia dolioliflora</i></td><td>4-flowered simple pleiochasmum</td><td>Glabrous</td><td>Axillary</td><td>0.2-0.9 cm</td><td>Weakly flattened</td><td>0.2-1 mm</td><td>2.9-4.1 mm</td><td>Glabrous</td><td>Narrowly triangular, apex acute</td><td>Densely pubescent all over</td><td>ca. 2 mm</td><td>Ellipsoid</td><td>6.8-9.5 mm</td></tr><tr><td><i>Alyxia glaucophylla</i></td><td>3- to 6- flowered simple pleiochasmum, sometime with 1 or 2 internode</td><td>Sparsely to densely puberulent</td><td>Axillary</td><td>0.2-0.5 cm</td><td>Weakly flattened</td><td>1.3-3 mm</td><td>3.6-5.1 mm</td><td>Glabrous or sparsely puberulent around top of tube</td><td>Ovate, apex acute</td><td>Densely pubescent all over</td><td>2.7-3.6 mm</td><td>Globose</td><td>8-16 mm</td></tr><tr><td><i>Alyxia humboldtiensis</i></td><td>Reduced and sessile to subsessile dichasial cyme</td><td>Sparsely pubescent</td><td>Axillary</td><td>0-0.1 cm</td><td>Rounded</td><td>null to ca. 0.5 mm</td><td>4.5 mm</td><td>Glabrous</td><td>Narrowly triangular</td><td>Very hairy at base</td><td>ca. 3 mm</td><td>Fusiform</td><td>Mature fruit unknown</td></tr></tbody></table>

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APPENDIX. (Continued)

<table><thead><tr><th></th><th>Inflorescence</th><th>Inflorescence pubescence</th><th>Inflorescence position</th><th>Peduncle length</th><th>Peduncle shape</th><th>Pedicel length</th><th>Corolla tube length</th><th>Corolla tube pubescence outside</th><th>Sepal shape</th><th>Ovary pubescence</th><th>Stamen insertion distance from corolla base</th><th>Fruit article shape</th><th>Fruit article length</th></tr></thead><tbody><tr><td>Alyxia hurlmannii</td><td>4- to 6- simple pleiochasium</td><td>Glabrous</td><td>Axillary</td><td>0.1-0.7 cm</td><td>Weakly flattened</td><td>0.9-3.8 mm</td><td>2.3-3 mm</td><td>Glabrous</td><td>Ovate, apex acute</td><td>Densely pubescent all over</td><td>1.4-1.6 mm</td><td>Ellipsoid or fusiform</td><td>14-20 mm</td></tr><tr><td>Alyxia kaalaensis</td><td>3- to 7- flowered compound pleichasium</td><td>Sparsetly to densely puberulent all over</td><td>Subterminal</td><td>0-0.4 cm</td><td>Rounded</td><td>0.8-2.2 mm</td><td>3-3.4 mm</td><td>Glabrous</td><td>Ovate, apex acute</td><td>Densely pubescent</td><td>2.2-2.7 mm</td><td>Globose</td><td>4.6-5.8 mm</td></tr><tr><td>Alyxia leucogyne</td><td>Long, branched several times, with > 20 flowers</td><td>Densely puberulent</td><td>Axillary</td><td>0.7-3.6 cm</td><td>Rounded</td><td>0.7-3.6 cm</td><td>2.8-3.6 mm</td><td>Glabrous to sparsely pubescent around top of tube outside</td><td>Ovate, apex acuminate</td><td>Densely pubescent</td><td>1.9-2.3 mm</td><td>Fusiform to globose</td><td>7.4-16.1 mm</td></tr><tr><td>Alyxia loeseneriana</td><td>3-7-flowered simple or compound pleiochasium</td><td>Glabrous</td><td>Axillary</td><td>0-0.5 cm</td><td>Weakly flattened</td><td>0.7-2 mm</td><td>3.4-5.6 mm</td><td>Glabrous</td><td>Ovate, apex acute</td><td>Densely pubescent all over</td><td>2.4-3.9 mm</td><td>Ellipsoid to fusiform</td><td>15.5-38 mm</td></tr><tr><td>Alyxia margaretiae</td><td>Very lax, 4-8-14 cm</td><td>Glabrous</td><td>Axillary or terminal</td><td>2.2-5.2 cm</td><td>Rounded</td><td>2.8-22 mm</td><td>8.7-10.5 mm</td><td>Glabrous</td><td>Ovate, apex obtuse</td><td>Densely pubescent all over or only at top</td><td>6-6.1 mm</td><td>Sickle-shaped</td><td>24-57 mm</td></tr><tr><td>Alyxia minimiflora</td><td>3- flowered trichasial cyme</td><td>Pubescent</td><td>Axillary</td><td>0-0.2 cm</td><td>Rounded</td><td>0.2-0.8 mm</td><td>1.6 mm</td><td>Glabrous</td><td>Widely triangular, apex acute to obtuse</td><td>Hairy around base</td><td>ca. 1 mm</td><td>Ovoid</td><td>6-7 mm</td></tr><tr><td>Alyxia mucronata</td><td>3-flowered, simple unbranched pleiochasium</td><td>Sparsetly to densely pubescent</td><td>Axillary or terminal</td><td>0.15-0.18 cm</td><td>Rounded</td><td>1.3-3 mm</td><td>7.2-9.4 mm</td><td>Sparsetly pureulent around top of tube</td><td>Ovate, apex acute</td><td>Densely pubescent</td><td>5.8-7.5 mm</td><td>Fusiform</td><td>17-22 mm</td></tr><tr><td>Alyxia nummularia</td><td>4-flowered simple pleiochasium</td><td>Densely pubescent</td><td>Axillary</td><td>0.4-1.2 cm</td><td>Rounded</td><td>1.3-5.5 mm</td><td>2.1-3.1 mm</td><td>Glabrous</td><td>Lanceolate, apex rounded to obtuse</td><td>Densely pubescent all over</td><td>2 mm</td><td>Globose</td><td>6.6-8.4 mm</td></tr></tbody></table>

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<table><thead><tr><th></th><th>Inflorescence</th><th>Inflorescence pubescence</th><th>Inflorescence position</th><th>Peduncle length</th><th>Peduncle shape</th><th>Pedicel length</th><th>Corolla tube length</th><th>Corolla tube pubescence outside</th><th>Sepal shape</th><th>Ovary pubescence</th><th>Stamen insertion distance from corolla base</th><th>Fruit article shape</th><th>Fruit article length</th></tr></thead><tbody><tr><td>Alyxia hurlmannii</td><td>4- to 6- simple pleiochasium</td><td>Glabrous</td><td>Axillary</td><td>0.1-0.7 cm</td><td>Weakly flattened</td><td>0.9-3.8 mm</td><td>2.3-3 mm</td><td>Glabrous</td><td>Ovate, apex acute</td><td>Densely pubescent all over</td><td>1.4-1.6 mm</td><td>Ellipsoid or fusiform</td><td>14-20 mm</td></tr><tr><td>Alyxia kaalaensis</td><td>3- to 7- flowered compound pleichasium</td><td>Sparsetly to densely puberulent all over</td><td>Subterminal</td><td>0-0.4 cm</td><td>Rounded</td><td>0.8-2.2 mm</td><td>3-3.4 mm</td><td>Glabrous</td><td>Ovate, apex acute</td><td>Densely pubescent</td><td>2.2-2.7 mm</td><td>Globose</td><td>4.6-5.8 mm</td></tr><tr><td>Alyxia leucogyne</td><td>Long, branched several times, with > 20 flowers</td><td>Densely puberulent</td><td>Axillary</td><td>0.7-3.6 cm</td><td>Rounded</td><td>0.7-3.6 cm</td><td>2.8-3.6 mm</td><td>Glabrous to sparsely pubescent around top of tube outside</td><td>Ovate, apex acuminate</td><td>Densely pubescent</td><td>1.9-2.3 mm</td><td>Fusiform to globose</td><td>7.4-16.1 mm</td></tr><tr><td>Alyxia loeseneriana</td><td>3-7-flowered simple or compound pleiochasium</td><td>Glabrous</td><td>Axillary</td><td>0-0.5 cm</td><td>Weakly flattened</td><td>0.7-2 mm</td><td>3.4-5.6 mm</td><td>Glabrous</td><td>Ovate, apex acute</td><td>Densely pubescent all over</td><td>2.4-3.9 mm</td><td>Ellipsoid to fusiform</td><td>15.5-38 mm</td></tr><tr><td>Alyxia margaretiae</td><td>Very lax, 4-8-14 cm</td><td>Glabrous</td><td>Axillary or terminal</td><td>2.2-5.2 cm</td><td>Rounded</td><td>2.8-22 mm</td><td>8.7-10.5 mm</td><td>Glabrous</td><td>Ovate, apex obtuse</td><td>Densely pubescent all over or only at top</td><td>6-6.1 mm</td><td>Sickle-shaped</td><td>24-57 mm</td></tr><tr><td>Alyxia minimiflora</td><td>3- flowered trichasial cyme</td><td>Pubescent</td><td>Axillary</td><td>0-0.2 cm</td><td>Rounded</td><td>0.2-0.8 mm</td><td>1.6 mm</td><td>Glabrous</td><td>Widely triangular, apex acute to obtuse</td><td>Hairy around base</td><td>ca. 1 mm</td><td>Ovoid</td><td>6-7 mm</td></tr><tr><td>Alyxia mucronata</td><td>3-flowered, simple unibranched pleiochasium</td><td>Sparsetly to densely pubescent</td><td>Axillary or terminal</td><td>0.15-0.18 cm</td><td>Rounded</td><td>1.3-3 mm</td><td>7.2-9.4 mm</td><td>Sparsetly pureulent around top of tube</td><td>Ovate, apex acute</td><td>Densely pubescent</td><td>5.8-7.5 mm</td><td>Fusiform</td><td>17-22 mm</td></tr><tr><td>Alyxia nummularia</td><td>4-flowered simple pleiochasium</td><td>Densely pubescent</td><td>Axillary</td><td>0.4-1.2 cm</td><td>Rounded</td><td>1.3-5.5 mm</td><td>2.1-3.1 mm</td><td>Glabrous</td><td>Lanceolate, apex rounded to obtuse</td><td>Densely pubescent all over</td><td>2 mm</td><td>Globose</td><td>6.6-8.4 mm</td></tr></tbody></table>

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APPENDIX. (Continued)

<table><thead><tr><th></th><th>Inflorescence</th><th>Inflorescence pubescence</th><th>Inflorescence position</th><th>Peduncle length</th><th>Peduncle shape</th><th>Pedicel length</th><th>Corolla tube length</th><th>Corolla tube pubescence outside</th><th>Sepal shape</th><th>Ovary pubescence</th><th>Stamen insertion distance from corolla base</th><th>Fruit article shape</th><th>Fruit article length</th></tr></thead><tbody><tr><td><i>Alyxia oppositifolia</i></td><td>Solitary of 3-flowered, on a slender 6 mm peduncle</td><td>Pubescent</td><td>Axillary</td><td>0.6–2 cm</td><td>Rounded, thin</td><td>1.5–10 mm</td><td>4.3–7.8 mm</td><td>Glabrous</td><td>Ovate, apex obtuse to acute</td><td>Glabrous or pubescent in a tuft between the carpels</td><td>4.3–6.4 mm</td><td>Ellipsoid</td><td>7.8–16 mm</td></tr><tr><td><i>Alyxia oubatchensis</i></td><td>3- to 7- flowered simple or compound pleiochasmum</td><td>Sparately to densely puberulent all over</td><td>Axillary</td><td>0.2–0.5 cm</td><td>Robust, weakly flattend</td><td>1.6–4.5 mm</td><td>6.5–7.2 mm</td><td>Glabrous or sparsely puberulent</td><td>Ovate, apex acute</td><td>Densely pubescent all over</td><td>5–5.1 mm</td><td>Ellipsoid</td><td>17–26 mm</td></tr><tr><td><i>Alyxia paniensis</i></td><td>3- to 4-flowered simple pleiochasmum</td><td>Glabrous</td><td>Axillary</td><td>0.3–0.8 cm</td><td>Rounded</td><td>4.5–5.5 mm</td><td>8.5 mm</td><td>Glabrous</td><td>Narrowly triangular, apex acute</td><td>Unknown</td><td>Unknown</td><td>Sickle-shaped</td><td>35–40 mm</td></tr><tr><td><i>Alyxia podocarpa</i></td><td>4 flowered, a simplex unbranched pleiochasmum</td><td>Glabrous or sparsely pubescent</td><td>Axillary</td><td>0.3–0.5 cm</td><td>Weakly flattened</td><td>0.7–1 mm</td><td>5.5–7 mm</td><td>Glabrous</td><td>Ovate, apex obtuse</td><td>Densely pubescent all over</td><td>4.1–4.4 mm</td><td>Subglobose, densely pubescent</td><td>7.2–12 mm</td></tr><tr><td><i>Alyxia poyaensis</i></td><td>Simple 3-flowered unbranched pleiochasmum</td><td>Glabrous or sparsely pubescent</td><td>Axillary</td><td>1.1–2.2 cm</td><td>Strongly flattened</td><td>2–8.5 mm</td><td>5.8–7 mm</td><td>Glabrous</td><td>Ovate, apex acute</td><td>Densely pubescent all over</td><td>4.4–4.7 mm</td><td>Ellipsoid</td><td>7–7.3 mm</td></tr><tr><td><i>Alyxia pseudoserpentina</i></td><td>3- to 5-flowered simple pleiochasmum</td><td>Sparately pubescent</td><td>Axillary</td><td>0–0.4 cm</td><td>Rounded</td><td>0.2–1.5 mm</td><td>2.6–3.6 mm</td><td>Glabrous</td><td>Lanceolate, apex acute</td><td>Sparately pubescent</td><td>ca. 2 mm</td><td>Ellipsoid to globose</td><td>3.7–5.4 mm</td></tr><tr><td><i>Alyxia rosmarinifolia</i></td><td>4- to 5-flowered simple pleiochasmum</td><td>Glabrous</td><td>Axillary</td><td>0.3–0.5 cm</td><td>Weakly flattened</td><td>0.9–3.4 mm</td><td>0.9–2 mm</td><td>Glabrous</td><td>Unknown</td><td>Unknown</td><td>Unknown</td><td>Globose to subglobose</td><td>4.4–7 mm</td></tr><tr><td><i>Alyxia rubricaulis</i></td><td>7-11 flowered</td><td>Glabrous</td><td>Axillary</td><td>0.7–1.7 cm</td><td>Weakly flattened</td><td>0.8–5.8 mm</td><td>3.2–4.2 mm</td><td>Glabrous</td><td>Ovate, apex acute</td><td>Densely pubescent all over</td><td>2.6 mm</td><td>Ellipsoid</td><td>11.5–17 mm</td></tr></tbody></table>

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APPENDIX. (Continued)

<table><thead><tr><th></th><th>Inflorescence</th><th>Inflorescence pubescence</th><th>Inflorescence position</th><th>Peduncle length</th><th>Peduncle shape</th><th>Pedicel length</th><th>Corolla tube length</th><th>Corolla tube pubescence outside</th><th>Sepal shape</th><th>Ovary pubescence</th><th>Stamen insertion distance from corolla base</th><th>Fruit article shape</th><th>Fruit article length</th></tr></thead><tbody><tr><td><i>Alyxia oppositifolia</i></td><td>Solitary of 3-flowered, on a slender 6 mm peduncle</td><td>Pubescent</td><td>Axillary</td><td>0.6–2 cm</td><td>Rounded, thin</td><td>1.5–10 mm</td><td>4.3–7.8 mm</td><td>Glabrous</td><td>Ovate, apex obtuse to acute</td><td>Glabrous or pubescent in a tuft between the carpels</td><td>4.3–6.4 mm</td><td>Ellipsoid</td><td>7.8–16 mm</td></tr><tr><td><i>Alyxia oubatchensis</i></td><td>3- to 7- flowered simple or compound pleiochasmum</td><td>Sparately to densely puberulent all over</td><td>Axillary</td><td>0.2–0.5 cm</td><td>Robust, weakly flattend</td><td>1.6–4.5 mm</td><td>6.5–7.2 mm</td><td>Glabrous or sparsely puberulent</td><td>Ovate, apex acute</td><td>Densely pubescent all over</td><td>5–5.1 mm</td><td>Ellipsoid</td><td>17–26 mm</td></tr><tr><td><i>Alyxia paniensis</i></td><td>3- to 4-flowered simple pleiochasmum</td><td>Glabrous</td><td>Axillary</td><td>0.3–0.8 cm</td><td>Rounded</td><td>4.5–5.5 mm</td><td>8.5 mm</td><td>Glabrous</td><td>Narrowly triangular, apex acute</td><td>Unknown</td><td>Unknown</td><td>Sickle-shaped</td><td>35–40 mm</td></tr><tr><td><i>Alyxia podocarpa</i></td><td>4 flowered, a simplex unbranched pleiochasmum</td><td>Glabrous or sparsely pubescent</td><td>Axillary</td><td>0.3–0.5 cm</td><td>Weakly flattened</td><td>0.7–1 mm</td><td>5.5–7 mm</td><td>Glabrous</td><td>Ovate, apex obtuse</td><td>Densely pubescent all over</td><td>4.1–4.4 mm</td><td>Subglobose, densely pubescent</td><td>7.2–12 mm</td></tr><tr><td><i>Alyxia poyaensis</i></td><td>Simple 3-flowered unbranched pleiochasmum</td><td>Glabrous or sparsely pubescent</td><td>Axillary</td><td>1.1–2.2 cm</td><td>Strongly flattened</td><td>2–8.5 mm</td><td>5.8–7 mm</td><td>Glabrous</td><td>Ovate, apex acute</td><td>Densely pubescent all over</td><td>4.4–4.7 mm</td><td>Ellipsoid</td><td>7–7.3 mm</td></tr><tr><td><i>Alyxia pseudoserpentina</i></td><td>3- to 5-flowered simple pleiochasmum</td><td>Sparately pubescent</td><td>Axillary</td><td>0–0.4 cm</td><td>Rounded</td><td>0.2–1.5 mm</td><td>2.6–3.6 mm</td><td>Glabrous</td><td>Lanceolate, apex acute</td><td>Sparately pubescent</td><td>ca. 2 mm</td><td>Ellipsoid to globose</td><td>3.7–5.4 mm</td></tr><tr><td><i>Alyxia rosmarinifolia</i></td><td>4- to 5-flowered simple pleiochasmum</td><td>Glabrous</td><td>Axillary</td><td>0.3–0.5 cm</td><td>Weakly flattened</td><td>0.9–3.4 mm</td><td>0.9–2 mm</td><td>Glabrous</td><td>Unknown</td><td>Unknown</td><td>Unknown</td><td>Globose to subglobose</td><td>4.4–7 mm</td></tr><tr><td><i>Alyxia rubricaudis</i></td><td>7-11 flowered</td><td>Glabrous</td><td>Axillary</td><td>0.7–1.7 cm</td><td>Weakly flattened</td><td>0.8–5.8 mm</td><td>3.2–4.2 mm</td><td>Glabrous</td><td>Ovate, apex acute</td><td>Densely pubescent all over</td><td>2.6 mm</td><td>Ellipsoid</td><td>11.5–17 mm</td></tr></tbody></table>

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APPENDIX. (Continued)

<table><thead><tr><th></th><th>Inflorescence</th><th>Inflorescence pubescence</th><th>Inflorescence position</th><th>Peduncle length</th><th>Peduncle shape</th><th>Pedicel length</th><th>Corolla tube length</th><th>Corolla tube pubescence outside</th><th>Sepal shape</th><th>Ovary pubescence</th><th>Stamen insertion distance from corolla base</th><th>Fruit article shape</th><th>Fruit article length</th></tr></thead><tbody><tr><td>Alyxia sarasini</td><td>Simple 3-10 flowered pleiochasmum or short congested compound pleiochasmum</td><td>Densely puberulent</td><td>Axillary or terminal</td><td>0.5-1.2 cm</td><td>Weakly flattened</td><td>1-8 mm</td><td>3.3-4 mm</td><td>Densely puberulent</td><td>Oblong, leafy, apex rounded to obtuse</td><td>Densely pubescent all over</td><td>1.7-1.9 mm</td><td>Globose</td><td>2.5-6 mm</td></tr><tr><td>Alyxia spathulata</td><td>4- to 5- flowered simple pleiochasmum</td><td>Glabrous</td><td>Axillary</td><td>0.1-0.6 cm</td><td>Weakly flattened</td><td>0.7-1.4 mm</td><td>1.1-1.6 mm</td><td>Glabrous</td><td>Ovate, apex obtuse</td><td>Hairy around base</td><td>Unknown</td><td>Globose</td><td>4.7-6.1 mm</td></tr><tr><td>Alyxia stellata</td><td>2- to 6- flowered simple pleiochasmum</td><td>Generally glabrous</td><td>Axillary, sometimes subterminal</td><td>0.4-0.7 cm</td><td>Weakly flattened</td><td>0.4-1 mm</td><td>2.8-3.8 mm</td><td>Glabrous</td><td>Narrowly triangular, apex acute</td><td>Hairy around base</td><td>ca. 3 mm</td><td>Ellipsoid, fleshy</td><td>9-15 mm</td></tr><tr><td>Alyxia tisserantii</td><td>3- to 7- flowered simple or compound pleiochasmum</td><td>Glabrous</td><td>Axillary</td><td>0.4-1.2 cm</td><td>Weakly flattened</td><td>0.6-3.5 mm</td><td>1.9-2.1 mm</td><td>Glabrous</td><td>Ovate, apex rounded</td><td>Hairy around base</td><td>Unknown</td><td>Globose to subglobose</td><td>3.7-5 mm</td></tr><tr><td>Alyxia torquata</td><td>3- to 4- simple pleiochasmum</td><td>Glabrous</td><td>Axillary</td><td>1.1-3.1 cm</td><td>Weakly flattened</td><td>1.2-4 mm</td><td>2.2-2.5 mm</td><td>Glabrous</td><td>Ovate, apex acute</td><td>Pubescent around base only</td><td>1.2 mm</td><td>Globose</td><td>4 mm</td></tr><tr><td>Alyxia urceolata</td><td>Solitary or in fascicules</td><td>Pubescent</td><td>Axillary, sometimes subterminal</td><td>0-0.2 cm</td><td>Rounded</td><td>null</td><td>3 mm</td><td>Glabrous</td><td>Lanceolate, apex acute</td><td>Densely pubescent</td><td>2 mm</td><td>Globose to ovoid</td><td>4-7 mm</td></tr><tr><td>Alyxia veillonii</td><td>4- or 5- flowered, a simple unbranched pleiochasmum</td><td>Glabrous</td><td>Axillary</td><td>0.4-0.7 cm</td><td>Weakly flattened</td><td>2-3.5 mm</td><td>6.7 mm</td><td>Glabrous</td><td>Ovate, apex acute</td><td>Pubescent in tuft between carpels</td><td>4.6 mm</td><td>Globose</td><td>ca. 5 mm</td></tr></tbody></table>
APPENDIX. (Continued)

<table><thead><tr><th></th><th>Inflorescence</th><th>Inflorescence pubescence</th><th>Inflorescence position</th><th>Peduncle length</th><th>Peduncle shape</th><th>Pedicel length</th><th>Corolla tube length</th><th>Corolla tube pubescence outside</th><th>Sepal shape</th><th>Ovary pubescence</th><th>Stamen insertion distance from corolla base</th><th>Fruit article shape</th><th>Fruit article length</th></tr></thead><tbody><tr><td>Alyxia sarasini</td><td>Simple 3-10 flowered pleiochasmum or short congested compound pleiochasmum</td><td>Densely puberulent</td><td>Axillary or terminal</td><td>0.5-1.2 cm</td><td>Weakly flattened</td><td>1-8 mm</td><td>3.3-4 mm</td><td>Densely puberulent</td><td>Oblong, leafy, apex rounded to obtuse</td><td>Densely pubescent all over</td><td>1.7-1.9 mm</td><td>Globose</td><td>2.5-6 mm</td></tr><tr><td>Alyxia spathulata</td><td>4- to 5- flowered simple pleiochasmum</td><td>Glabrous</td><td>Axillary</td><td>0.1-0.6 cm</td><td>Weakly flattened</td><td>0.7-1.4 mm</td><td>1.1-1.6 mm</td><td>Glabrous</td><td>Ovate, apex obtuse</td><td>Hairy around base</td><td>Unknown</td><td>Globose</td><td>4.7-6.1 mm</td></tr><tr><td>Alyxia stellata</td><td>2- to 6- flowered simple pleiochasmum</td><td>Generally glabrous</td><td>Axillary, sometimes subterminal</td><td>0.4-0.7 cm</td><td>Weakly flattened</td><td>0.4-1 mm</td><td>2.8-3.8 mm</td><td>Glabrous</td><td>Narrowly triangular, apex acute</td><td>Hairy around base</td><td>ca. 3 mm</td><td>Ellipsoid, fleshy</td><td>9-15 mm</td></tr><tr><td>Alyxia tisserantii</td><td>3- to 7- flowered simple or compound pleiochasmum</td><td>Glabrous</td><td>Axillary</td><td>0.4-1.2 cm</td><td>Weakly flattened</td><td>0.6-3.5 mm</td><td>1.9-2.1 mm</td><td>Glabrous</td><td>Ovate, apex rounded</td><td>Hairy around base</td><td>Unknown</td><td>Globose to subglobose</td><td>3.7-5 mm</td></tr><tr><td>Alyxia torquata</td><td>3- to 4- simple pleiochasmum</td><td>Glabrous</td><td>Axillary</td><td>1.1-3.1 cm</td><td>Weakly flattened</td><td>1.2-4 mm</td><td>2.2-2.5 mm</td><td>Glabrous</td><td>Ovate, apex acute</td><td>Pubescent around base only</td><td>1.2 mm</td><td>Globose</td><td>4 mm</td></tr><tr><td>Alyxia urceolata</td><td>Solitary or in fascicules</td><td>Pubescent</td><td>Axillary, sometimes subterminal</td><td>0-0.2 cm</td><td>Rounded</td><td>null</td><td>3 mm</td><td>Glabrous</td><td>Lanceolate, apex acute</td><td>Densely pubescent</td><td>2 mm</td><td>Globose to ovoid</td><td>4-7 mm</td></tr><tr><td>Alyxia veillonii</td><td>4- or 5- flowered, a simple unbranched pleiochasmum</td><td>Glabrous</td><td>Axillary</td><td>0.4-0.7 cm</td><td>Weakly flattened</td><td>2-3.5 mm</td><td>6.7 mm</td><td>Glabrous</td><td>Ovate, apex acute</td><td>Pubescent in tuft between carpels</td><td>4.6 mm</td><td>Globose</td><td>ca. 5 mm</td></tr></tbody></table>