Greenwayodendron glabrum Lissambou, Hardy &amp; Couvreur, PhytoKeys 114: 66 2018
Creators: name: Couvreur, Thomas L. P.
name: Dagallier, Leo-Paul M. J.
name: Crozier, Francoise
name: Ghogue, Jean-Paul
name: Hoekstra, Paul H.
name: Kamdem, Narcisse G.
name: Johnson, David M.
name: Murray, Nancy A.
name: Sonke, Bonaventure
Publisher: name: Zenodo
Year: 2022
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Magnoliopsida
Magnoliales
Annonaceae
Greenwayodendron
Greenwayodendron glabrum

description: Greenwayodendron glabrum Lissambou, Hardy &amp; Couvreur, PhytoKeys 114: 66, 2018 Figs 27, 29; Map 4C Type. Cameroon. South Region; 40 km from Kribi, 5 km. E. of Edea road, tract of Fifinda-Bella road (SFIA), <i>Bos J.J. 6267</i>, 6 Feb 1970: holotype WAG[WAG.1433854]; isotypes BR[BR0000014826399]; YA <i>n.v.</i>; WAG[WAG1433855]. Description. Tree, 7-30 m tall, d.b.h. 3-20 cm; stilt roots or buttresses absent. Indumentum of simple hairs; old leafless branches glabrous, young foliate branches pubescent. Leaves: petiole 3-6 mm long, 1-2 mm in diameter, <b>glabrous</b>, grooved, blade inserted on the side of the petiole; blade 6.5-16.2 cm long, 2.1-5.8 cm wide, elliptic to oblong, apex acuminate to caudate, acumen 0.4-2 cm long, base cuneate to rounded, papyraceous, below sparsely pubescent to glabrous when young, glabrous when old, <b>above glabrous when young and old, concolorous; midrib impressed, above completely glabrous when young and old</b>, below glabrous when young and old; secondary veins 5 to 7 pairs, glabrous below; tertiary venation indistinct. Individuals androdioecious; male and bisexual inflorescences similar, ramiflorous on old leafless and young foliate branches, leaf opposed or extra axillary. Flowers with 9 perianth parts in 3 whorls, 1 to 4 per inflorescence; pedicel ca. 4 mm long, ca. 1 mm in diameter, pubescent to glabrous; in fruit 6-13 mm long, 1-2 mm in diameter, pubescent to glabrous; bracts 2, one basal and one upper towards the upper half of pedicel, basal bracts 1-2 mm long, 2 mm wide; upper bracts 1-3 mm long, 1-3 mm wide; sepals 3, valvate, basally fused to free, 3 mm long, 3-4 mm wide, ovate, apex acuminate, base truncate, green, pubescent outside, glabrous inside, margins flat; petals free, sub equal; outer petals 3, 12-13 mm long, 2-2.5 mm wide, elliptic to ovate, apex acuminate, base rounded, green to light yellow, margins flat, pubescent outside, glabrous inside; inner petals 3, valvate, 12-13 mm long, 2-2.5 mm wide, ovate, apex acuminate, base rounded, green to light yellow, margins flat, pubescent outside, glabrous inside; stamens 10 to 15, in 4 to 5 rows, 1-2 mm long, elongated; connective tongue shaped, glabrous, green; staminodes absent; carpels free, 10 to 15, ovary ca. 1 mm long, stigma ovoid, pubescent. Monocarps stipitate, stipes 5-10 mm long, 1-3 mm in diameter; monocarps 2 to 8, 11-21 mm long, 11-21 mm in diameter, ellipsoid to globose, apex rounded, glabrous, smooth, smooth; seeds 1 to 4 per monocarp, 7-13 mm long, 7-13 mm in diameter, ellipsoid to flattened ellipsoid; aril absent. Distribution. Known from Cameroon and Gabon; in Cameroon known from the Littoral and South regions. Habitat. A common species when present and growing in sympatry with <i>G. suaveolens</i> in southern Cameroon; in lowland non-inundated primary or secondary forests. Altitude 20-750 m a.s.l. Local and common names known in Cameroon. None recorded, but possibly same as <i>G. suaveolens</i> (see below). IUCN conservation status. Least Concern (LC) (Harvey-Brown 2019b). Uses in Cameroon. None recorded. Notes. This species is very close morphologically to <i>G. suaveolens.</i> Both species grow in sympatry in southern Cameroon. However, <i>G. glabrum</i> is distinguished by its glabrous petiole and upper midrib and leaf blades (versus pubescent in <i>G. suaveolens</i>). Studies have shown that these two species are genetically distinct at both the phylogenetic (Couvreur et al. 2019) and population genetic (Lissambou et al. 2019) levels. Specimens examined. <b>Central Region</b>: Left bank Nyong R 30 km S of Edéa near bridge in road to Kribi, 3.8°N, 10.13°E, <i>26 April 1965</i>, <i>Leeuwenberg A.J.M.</i> 5582 (B,BR,C,GC,K,LUAI,MO,P,UC,WAG,YA). <b>Littoral Region</b>: Ndogtima Nyong (Edéa), 3.8°N, 10.13°E, <i>03 February 1974</i>, <i>Letouzey R.</i> 12869 (BR,P,WAG,YA). <b>South Region</b>: 43 kmN of Kribi 5 km E of Edea road forest track Fifinda-Bella old secondary forest, 3.21°N, 10.06°E, <i>06 February 1970</i>, <i>Bos J.J.</i> 6267 (BR,P,WAG,YA); ca 16 km On the road from Ebolowa to Minkok, 2.98°N, 11.17°E, <i>12 September 1975</i>, <i>de Wilde J.J.F.E</i> 8465 (B,BR,K,MO,P,WAG,YA); Mvini 35 km East of Campo, 2.39°N, 10.04°E, <i>19 December 1983</i>, <i>Kaji M.</i> 4 (YA); Campo-Ma’an region, 2.28°N, 9.950°E, <i>17 January 2016</i>, <i>Lissambou B.J.</i> 1745 (BRLU); Campo-Ma’an region, 2.28°N, 9.949°E, <i>17 January 2016</i>, <i>Lissambou B.J.</i> 1748 (BRLU); Campo-Ma’an region, 2.28°N, 9.948°E, <i>17 January 2016</i>, <i>Lissambou B.J.</i> 1775 (BRLU); Campo-Ma’an region, 2.28°N, 9.949°E, <i>17 January 2016</i>, <i>Lissambou B.J.</i> 1788 (BRLU); Campo-Ma’an region, 2.29°N, 9.945°E, <i>18 January 2016</i>, <i>Lissambou B.J.</i> 1807 (BRLU); Campo-Ma’an region, 2.40°N, 9.895°E, <i>18 January 2016</i>, <i>Lissambou B.J.</i> 1828 (BRLU); Campo-Ma’an region, 2.40°N, 9.894°E, <i>18 January 2016</i>, <i>Lissambou B.J.</i> 1830 (BRLU); Campo-Ma’an region, 3.19°N, 10.10°E, <i>19 January 2016</i>, <i>Lissambou B.J.</i> 1855 (BRLU); Campo-Ma’an region, 3.19°N, 10.10°E, <i>19 January 2016</i>, <i>Lissambou B.J.</i> 1856 (BRLU); Cagnon du Ntem 16 km SW de Nyabessan, 2.32°N, 10.28°E, <i>30 November 1982</i>, <i>Nkongmeneck B.A.</i> 400 (YA).
description: Published as part of <i>Couvreur, Thomas L. P., Dagallier, Leo-Paul M. J., Crozier, Francoise, Ghogue, Jean-Paul, Hoekstra, Paul H., Kamdem, Narcisse G., Johnson, David M., Murray, Nancy A. &amp; Sonke, Bonaventure, 2022, Flora of Cameroon - Annonaceae Vol 45, pp. 1-532 in PhytoKeys 207</i> on pages 111-113, DOI: 10.3897/phytokeys.207.61432
description: {"references": ["Lissambou, B-J, Hardy, OJ, Atteke, C, Stevart, T, Dauby, G, Mbatchi, B, Sonke, B, Couvreur, TLP, 2018. Taxonomic revision of the African genus Greenwayodendron (Annonaceae). PhytoKeys 114: 55 - 93, DOI: https://doi.org/10.3897/phytokeys.114.27395", "Harvey-Brown, Y, 2019b. Greenwayodendron glabrum. The IUCN Red List of Threatened Species: e.T137108897A149068063. https://doi.org/10.2305/IUCN.UK.2019-2.RLTS.T137108897A149068063.en", "Couvreur, TLP, Helmstetter, AJ, Koenen, EJM, Bethune, K, Brandao, RD, Little, SA, Sauquet, H, Erkens, RHJ, 2019. Phylogenomics of the major tropical plant family Annonaceae using targeted enrichment of nuclear genes. Frontiers in Plant Science 9: e1941. https://doi.org/10.3389/fpls.2018.01941", "Lissambou, B-J, Couvreur, TLP, Atteke, C, Stevart, T, Pineiro, R, Dauby, G, Monthe, FK, Ikabanga, DU, Sonke, B, M'batchi, B, Hardy, OJ, 2019. Species delimitation in the genus Greenwayodendron based on morphological and genetic markers reveals new species. TAXON 68: 442 - 454, DOI: https://doi.org/10.1002/tax.12064"]}