Piptostigma longepilosum Engl., Notizbl. Koenigl. Bot. Gart. Berlin 2: 297 1899
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 longepilosum

description: Piptostigma longepilosum Engl., Notizbl. Königl. Bot. Gart. Berlin 2: 297, 1899 Fig. 88; Map 11C Type. Cameroon. South Region; around Bipinde, <i>Zenker G.A. 1075</i>, 1896: holotype: B[B100154079]; isotypes: HBG[HBG502530]; L[L0183458]; M[M0107925]; NY[NY00026195]; P[P00363294, P00363295]; S[S07-13478]; WU[WU0025868]. Description. Tree, 4-16 m tall, d.b.h. unknown; stilt roots or buttresses absent. Indumentum of simple hairs; old leafless branches sparsely pubescent to glabrous, <b>young foliate branches densely hispid, hairs 4-5 mm long.</b> Leaves: petiole 4-7 mm long, 2-3 mm in diameter, <b>hispid, hairs 1-5 mm long</b>, cylindrical, blade inserted on top of the petiole; blade 7.7-24.3 cm long, 4-10.3 cm wide, obovate, apex acuminate, acumen 0.3-1 cm long, base rounded to obtuse, papyraceous, below glabrous when young and old, above glabrous when young and old, discolorous, whitish below; midrib impressed, above densely pubescent when young and old, below pubescent when young and old; secondary veins 14 to 34 pairs, glabrous above; tertiary venation percurrent. Individuals bisexual; inflorescence cauliflorous, pubescent all over, especially younger parts, with hairs 1-2 mm long, peduncle like base 5-20 mm long, axial internodes 14-40 mm long, lax to sub-lax, sympodial rachis 45-150 mm long. Flowers with 9 perianth parts in 3 whorls, 1 to 4 per inflorescence; pedicel 9-12 mm long, ca. 2 mm in diameter, densely pubescent; in fruit 10-12 mm long, 4 mm in diameter, pubescent; basal bract 6-12 mm long, 4-6 mm wide; upper bract 6-12 mm long, 4-6 mm wide; sepals 3, valvate, free, ca. 6 mm long, 4 mm wide, ovate, apex acute, base truncate, brown, pubescent outside, glabrous inside, margins flat; petals free, outer petals shorter than inner; outer petals 3, 6-10 mm long, 3-4 mm wide, elliptic, apex acute, base truncate, margins flat, pubescent outside, glabrous inside; inner petals 3, valvate, 40-80 mm long, 10-15 mm wide, elliptic, apex acute, base truncate, margins wavy, densely pubescent outside, pubescent towards base inside; stamens 70 to 90, in 5 to 6 rows, 1-2 mm long, broad; connective discoid, glabrous, red; staminodes absent; carpels free, 3 to 5, ovary ca. 2 mm long, stigma globose, pubescent. Monocarps sessile, 1 to 3, ca. 15 mm long, ca. 20 mm in diameter, <b>ellipsoid, apex rounded, pubescent, warty, bumpy, orange, pink to yellow when ripe</b>; seeds 10 to 12 per monocarp, ca. 10 mm long, ca. 8 mm in diameter, ellipsoid; aril absent. Distribution. endemic to Cameroon, known from the South and South-West regions. Habitat. A rare species; in the understory of lowland primary rain forests. Altitude 0-120 m a.s.l. Local and common names known in Cameroon. None recorded. IUCN conservation status. Endangered (EN) (Cosiaux et al. 2019a j). Uses in Cameroon. None reported. Notes. <i>Piptostigma longepilosum</i> is easily identified by the long (4-5 mm long) generally erect pubescence on the young foliate branches, petioles and young inflorescences, and rounded to obtuse leaf base. <i>Piptostigma mortehanii</i> also has a hispid pubescence, but its hairs are much shorter (less than 4 mm long) and the leaf blade base is acute. This species has not been recollected since 1994, despite efforts to locate it. Specimens examined. <b>South Region</b>: Route de Bipindi à Dihani, 3.26°N, 10.20°E, <i>24 June 1928</i>, <i>Annet E.</i> 420 (P); ca 45 k from Kribi ca 8 km N of Lolodorf road, 3.1°N, 10.25°E, <i>02 April 1970</i>, <i>Bos J.J.</i> 6683 (BR,K,LD,LM,MO,P,WAG,YA); Bipindi, 3.08°N, 10.42°E, <i>1896</i>, <i>Zenker G.A.</i> 1075 (L,P,WAG). <b>South-West Region</b>: Mokoko Forest Reserve Boa / Mokoko, 4.42°N, 8.972°E, <i>31 May 1994</i>, <i>Acworth J.M.</i> 289 (K,YA); Mokoko Forest Reserve Dikome, 4.48°N, 9.033°E, <i>02 May 1994</i>, <i>Ekema S.N.</i> 862 (K,YA); Aikoume(?) Banondo(?) forest (Cameroun), 4.45°N, 9.016°E, <i>03 May 1994</i>, <i>Sonké B.</i> 1173 (BR,WAG); Mokoko Mount above Bonja village, 4.46°N, 9.1°E, <i>23 March 1993</i>, <i>Tchouto Mbatchou G.P.</i> 613 (K); Korup National Park Primary rain forest, 5.03°N, 8.833°E, <i>01 March 1987</i>, <i>Thomas D.W.</i> 6906 (MO); Mokoko Forest Reserve Ekombe-Mofako, 4.46°N, 9.066°E, <i>21 May 1994</i>, <i>Watts J.</i> 1104 (K,YA); Likingi 35 hrs S on Wonge river E hills, 4.33°N, 8.98°E, <i>23 March 1993</i>, <i>Wheatley J.I.</i> 814 (K).
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 289-291, 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"]}