Piptostigma multinervium Engl. &amp; Diels, Monogr. Afrik. Pflanzen. - Fam. 6: 55 1901
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
Piptostigma
Piptostigma multinervium

description: Piptostigma multinervium Engl. &amp; Diels, Monogr. Afrik. Pflanzen.-Fam. 6: 55, 1901 Figs 90, 91; Map 11H Type. Cameroon. South Region; Bipindi, <i>Zenker G.A. 2263</i>, Mar 1901: holotype: B[B100460901]; isotypes: BM[BM000553960]; G[G00442259]; GOET[GOET005683]; HBG[HBG502522]; K[K000199004, K000199005]; P[P02031265, P00363277]; WAG[WAG0065102]; WU[WU0038180]. Description. Tree, 8-10 m tall, d.b.h. 10-15 cm; stilt roots or buttresses absent. Indumentum of simple hairs; old leafless branches sparsely pubescent, young foliate branches densely pubescent. Leaves: petiole 2-4 mm long, 2-3 mm in diameter, pubescent, cylindrical, blade inserted on top of the petiole; blade 13-21 cm long, 3-8 cm wide, <b>obovate</b>, apex acuminate, acumen 0.5-1 cm long, base cuneate to obtuse, papyraceous, below pubescent when young and old, above glabrous when young and old, concolorous or discolorous, whitish below; midrib impressed, above glabrous when young and old, below pubescent when young and old; secondary veins 15 to 31 pairs, glabrous above; tertiary venation percurrent. Individuals bisexual; inflorescence cauliflorous and ramiflorous on old leafless branches, axillary, peduncle like base 8-20 mm long, axial internodes 5-40 mm long, <b>lax or sublax</b>, sympodial rachis 15-70 mm long. Flowers with 9 perianth parts in 3 whorls, up to 6 per inflorescence; pedicel 9-12 mm long, ca. 2 mm in diameter, pubescent; in fruit ca. 20 mm long, ca. 5 mm in diameter, pubescent; basal bract 5-8 mm long, 4-5 mm wide; upper bract 5-7 mm long, 1-2 mm wide; sepals 3, valvate, free, ca. 5 mm long, ca. 4 mm wide, triangular, apex acute, base truncate, brown, pubescent outside, glabrous inside, margins flat; petals free, outer petals shorter than inner; outer petals 3, ca. 8 mm long, ca. 4 mm wide, ovate, apex acute, base truncate, light yellow to red, margins flat, pubescent outside, glabrous inside; inner petals 3, valvate, ca. 35 mm long, ca. 12 mm wide, ovate, apex acute, base truncate, pink, margins wavy, pubescent to pubescent towards base outside, pubescent inside; stamens 70 to 90, in 4 to 5 rows, 1-2 mm long, broad; connective discoid, glabrous, red; staminodes absent; carpels free, 4 to 6, ovary ca. 2 mm long, stigma globose, pubescent. Monocarps sessile, 1 to 4, ca. 40 mm long, ca. 28 mm in diameter, ellipsoid, apex rounded, <b>glabrous, verrucose to muricate, not ribbed, white when ripe</b>; seeds 7 to 8(9) per monocarp, ca. 17 mm long, ca. 11 mm in diameter, ellipsoid; aril absent. Distribution. Known from Cameroon and Gabon, and probably present in Equatorial Guinea; in Cameroon known from South, Central and Littoral regions. Habitat. A common species within its range; in the understory of old secondary or primary lowland rain forests, often on swampy soils. Altitude 200-900 m a.s.l. Local and common names known in Cameroon. None recorded. IUCN conservation status. Least Concern (LC) (Cosiaux et al. 2019a o). Uses in Cameroon. None reported. Notes. <i>Piptostigma multinervium</i> is morphologically close to <i>P. glabrescens</i> by the shape and the size of the leaf blade. By the external aspect of the monocarps, it is also close to <i>P. macrophyllum</i>. See notes of both species for more details on the differences. Specimens examined. <b>Central Region</b>: Nkolmylon 20 km route Yaoundé-Douala, 3.84°N, 11.31°E, <i>30 March 1984</i>, <i>Achoundong G.</i> 893 (YA); Colline Nkoldjobe dans le massif Mbaminkom, 3.95°N, 11.36°E, <i>15 March 1978</i>, <i>Dang D.</i> 681 (P,YA). <b>Littoral Region</b>: Ebo Forest Reserve Djuma permanent camp on Djashaka trail, 4.35°N, 10.23°E, <i>13 February 2014</i>, <i>Couvreur T.L.P.</i> 616 (WAG,YA); Mambe Massif above Boga village 100 km along road from Yaoundé to Ed 3.90°N, 10.77°E, <i>19 June 2014</i>, <i>Couvreur T.L.P.</i> 649 (WAG,YA); Ebo proposed national park Hospital trail 1430 m from Ndogbayembe trail, 4.14°N, 10.18°E, <i>23 March 2006</i>, <i>Mackinnon L.E.</i> 52 (YA); Near Lac Tissongo Mouanko Region, 3.62°N, 9.93°E, <i>21 February 1975</i>, <i>McKey D.B.</i> 47 (P,YA); Bekob, 4.61°N, 10.70°E, <i>19 February 2006</i>, <i>Tchiengue B.</i> 2555 (K). <b>South Region</b>: 13 km from Kribi S of Lolodorf road, 2.98°N, 9.983°E, <i>23 May 1969</i>, <i>Bos J.J.</i> 4625 (BR,MO,P,WAG,YA); 21 km from Kribi Lolodorf road, 3.1°N, 10.05°E, <i>16 June 1969</i>, <i>Bos J.J.</i> 4793 (BR,K,LD,LM,MO,P,POZG,WAG,YA); Kribi-Lolodorf, 3.17°N, 10.48°E, <i>28 July 1970</i>, <i>Bos J.J.</i> 7163 (BR,P,WAG); Mvini 35 km east of Campo, 2.37°N, 10.09°E, <i>27 February 1982</i>, <i>Hoshino J.</i> 359 (YA); Lolodorf, 3.23°N, 10.73°E, <i>18 April 1928</i>, <i>Lolo</i> 6 (P); Bipindi, 3.08°N, 10.41°E, <i>01 January 1914</i>, <i>Zenker G.A.</i> 2079 (WAG); Bipindi, 3.08°N, 10.41°E, <i>01 January 1918</i>, <i>Zenker G.A.</i> 21 (U); Bipindi, 3.08°N, 10.42°E, <i>01 January 1900</i>, <i>Zenker G.A.</i> 2263 (L,P,WAG); Bipindi, 3.08°N, 10.42°E, <i>01 March 1901</i>, <i>Zenker G.A.</i> s.n. (P).
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 299-302, DOI: 10.3897/phytokeys.207.61432
description: {"references": ["Cosiaux, A, Couvreur, TLP, Erkens, RHJ, 2019a. Annickia affinis. The IUCN Red List of Threatened Species: e.T132512369A132513599. https://doi.org/10.2305/IUCN.UK.2019-3.RLTS.T132512369A132513599.en"]}