Flora of Cameroon - Annonaceae Vol 45 Author Couvreur, Thomas L. P. https://orcid.org/0000-0002-8509-6587 IRD, DIADE, Univ Montpellier, Montpellier, France & Universite de Yaounde I, Ecole Normale Superieure, Departement des Sciences Biologiques, Laboratoire de Botanique systematique et d'Ecologie, B. P. 047, Yaounde, Cameroon & Naturalis Biodiversity Center, Botany Section, Darwinweg 2, 2333 CR Leiden, Netherlands thomas.couvreur@ird.fr Author Dagallier, Leo-Paul M. J. https://orcid.org/0000-0002-3270-1544 IRD, DIADE, Univ Montpellier, Montpellier, France Author Crozier, Francoise IRD, DIADE, Univ Montpellier, Montpellier, France Author Ghogue, Jean-Paul Universite de Yaounde I, Ecole Normale Superieure, Departement des Sciences Biologiques, Laboratoire de Botanique systematique et d'Ecologie, B. P. 047, Yaounde, Cameroon & Green Connexion, Environmental Group, siege face GP Melen, a cote de l'immeuble Palais des verres. Yaounde, Cameroun Author Hoekstra, Paul H. Naturalis Biodiversity Center, Botany Section, Darwinweg 2, 2333 CR Leiden, Netherlands Author Kamdem, Narcisse G. Universite de Yaounde I, Ecole Normale Superieure, Departement des Sciences Biologiques, Laboratoire de Botanique systematique et d'Ecologie, B. P. 047, Yaounde, Cameroon Author Johnson, David M. https://orcid.org/0000-0003-2896-7419 Department of Botany-Microbiology, Ohio Wesleyan University, Delaware, OH, 43015, USA Author Murray, Nancy A. Department of Botany-Microbiology, Ohio Wesleyan University, Delaware, OH, 43015, USA Author Sonke, Bonaventure https://orcid.org/0000-0002-4310-3603 Universite de Yaounde I, Ecole Normale Superieure, Departement des Sciences Biologiques, Laboratoire de Botanique systematique et d'Ecologie, B. P. 047, Yaounde, Cameroon text PhytoKeys 2022 2022-09-20 207 1 532 http://dx.doi.org/10.3897/phytokeys.207.61432 journal article http://dx.doi.org/10.3897/phytokeys.207.61432 1314-2003-207-1 29CD4EF8FB525DBAA022DF25CDB649C9 Piptostigma submontanum Ghogue, Sonke & Couvreur, Pl. Ecol. Evol. 150 (2): 208, 2017 Fig. 92 ; Map 12B Type . Cameroon . South-West Region ; Rumpi Mountains , between Lokando and Dikome Balue , 30 km NNW Kumba , Letouzey R.G. 14535 , 23 Mar 1976 : holotype : YA[YA0002870]; isotype: P[P02032181] . Description. Tree, up to 25 m tall, d.b.h. up to 20 cm; stilt roots or buttresses absent. Indumentum of simple hairs; old leafless branches sparsely pubescent, young foliate branches tomentose . Leaves: petiole 2-4 mm long, 2 mm in diameter, tomentose , cylindrical, blade inserted on top of the petiole; blade 40-49 cm long, 16-23 cm wide, obovate, apex acuminate to mucronate , acumen 0.8-1.3 cm long, base decurrent to cuneate and narrowly cordate, coriaceous , below densely pubescent when young, densely pubescent when old, above pubescent when young, glabrous when old, discolorous, whitish below; midrib impressed, above pubescent when young and old, below pubescent when young and old; secondary veins 58 to 65 pairs , sparsely pubescent above; tertiary venation percurrent. Individuals bisexual; inflorescence cauliflorous, peduncle like base 10-18 mm long, axial internodes 2-5 mm long, compact , sympodial rachis 20-40 mm long. Flowers with 9 perianth parts in 3 whorls, 1 to 4 per inflorescence; pedicel 2-6 mm long, 2-3 mm in diameter, tomentose ; in fruit ca. 25 mm long, ca. 4 mm in diameter, tomentose; basal bract 7-8 mm long, ca. 4 mm wide; upper bract 4-6 mm long, ca. 6 mm wide; sepals 3, valvate, free, 5-8 mm long, ca. 5 mm wide, ovate, apex acute, base truncate, brown, pubescent outside, glabrous inside, margins flat; petals free, outer petals shorter than inner; outer petals 3, ca. 5 mm long, ca. 4 mm wide, ovate, apex acute, base truncate, light yellow to red, margins flat, densely pubescent outside, glabrous inside; inner petals 3, valvate, 50-60 mm long, 5-7 mm wide, narrowly elliptic, apex acute, base truncate, margins wavy, densely pubescent outside, glabrous inside; stamens numerous, in 6 to 8 rows, 1 mm long, broad; connective discoid, glabrous, red; staminodes absent; carpels free, 12 to 15, ovary ca. 2 mm long, stigma globose, pubescence not seen. Monocarps sessile, 1 to 2, 20-30 mm long, 10-25 mm in diameter, obovoid, apex rounded, tomentose, bumpy , brown when ripe; seeds 6 to 8 per monocarp, 6-12 mm long, 3-5 mm in diameter, ellipsoid; aril absent. Distribution. Endemic to Cameroon; known from the South-West and Littoral regions. Habitat. A fairly uncommon species; in submontane rain forests. Altitude 900-1200 m a.s.l. Local and common names known in Cameroon. None recorded. IUCN conservation status. Endangered (EN) ( Cosiaux et al. 2019a r). Uses in Cameroon. None reported. Notes. See under P. calophyllum . Specimens examined. Littoral Region : Ebo Forest Reserve Djuma camp Djashaka trail, 4.36°N , 10.25°E , 15 February 2013 , Couvreur T.L.P. 625 (WAG,YA). South-West Region : Edip to Kodmin ca 1 hour's walk, 4.96°N , 9.666°E , 02 December 1998 , Cheek M. 9177 (K,P,WAG,YA); Mount Kupe Kodmin , 4.96°N , 9.683°E , 21 November 1998 , Gosline W.G. 198 (K,P,WAG,YA); Abang road and then right to forest, 4.93°N , 9.731°E , 11 December 1999 , Gosline W.G. 256 (K,MO,WAG,YA); Entre Lokando ( 900 m ) et Dikome Balue ( 1200 m ) 30 km NNW-Kumba, 4.85°N , 9.28°E , 23 March 1976 , Letouzey R. 14535 (P,YA); Rumpi Hills near Madie River , 4.94°N , 9.123°E , 22 February 1995 , Thomas D.W. 10496 (K) .