Uvariastrum insculptum Sprague &amp; Hutch., Bull. Misc. Inform. Kew 6: 159 1916
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
Uvariastrum
Uvariastrum insculptum

description: Uvariastrum insculptum (Engl. &amp; Diels) Sprague &amp; Hutch., Bull. Misc. Inform. Kew 6: 159, 1916 Fig. 117; Map 14H ≡ Uvaria insculpta Engl. &amp; Diels, Notizbl. Königl. Bot. Gart. Berlin 2: 295, 1899. Type. Cameroon. South-West Region; Johann-Albrechtshöhe [Kumba], <i>Staudt A. 740</i>, 1896: lectotype, designated by Couvreur (2014), p. 18: B[B100153111]; isolectotypes: COI[COI00077205]; G[G00011729]; K[K000105338, K000105339, K000105340]; [P00315828, P00315829]; S[S12-22768]. Description. Tree to shrub, 4-15 m tall, d.b.h. 3-5 cm; stilt roots or buttresses absent. Indumentum of simple hairs; old leafless branches glabrous, <b>young foliate branches densely pubescent.</b> Leaves: petiole 1-4 mm long, 1 mm in diameter, <b>densely pubescent</b>, weakly grooved adaxially, blade inserted on top of the petiole; blade 6-14 cm long, 2-4 cm wide, elliptic to obovate, apex rounded or acuminate, acumen 1-2 cm long, base subcordate, papyraceous to subcoriaceous, below glabrous when young and old, above sparsely pubescent to glabrous when young, sparsely pubescent to glabrous when old, concolorous; midrib sunken or flat, above pubescent when young, glabrous when old, below sparsely pubescent to densely pubescent when young, sparsely pubescent to densely pubescent when old; secondary veins 8 to 12 pairs, sparsely pubescent to glabrous above; tertiary venation reticulate. Individuals bisexual; inflorescences cauliflorous, ramiflorous on young foliate or on old leafless branches, axillary. Flowers with 9 perianth parts in 3 whorls, 1 to 2 per inflorescence; pedicel 8-15 mm long, 1-2 mm in diameter, densely pubescent; in fruit 10-20 mm long, 2-5 mm in diameter, densely pubescent; bracts 3, all basal, 4 mm long, 3-4 mm wide; sepals 3, reduplicate-valvate, free, 10-20 mm long, 5-8 mm wide, ovate, apex acute, base truncate, green to light green or pale yellow with darker margins, densely pubescent outside, densely pubescent inside, margins slightly revolute; petals free, outer petals longer than inner; outer petals 3, 23-35 mm long, 5-10 mm wide, ovate, apex acute, base narrowed, light yellow to white, margins flat, pubescent outside, pubescent (sometimes sparsely) pubescent inside; inner petals 3, valvate, 10-20 mm long, 6-10 mm wide, ovate, apex acute, base cuneate, light yellow, margins flat, densely pubescent outside, sparsely pubescent inside; stamens numerous, 2-3 mm long, linear; connective elongated, densely pubescent; staminodes absent; carpels free, 6 to 7, ovary 2-3 mm long, stigma bilobed, slightly capitate, glabrous. Monocarps shortly stipitate, stipes 2-6 mm long, 2-5 mm in diameter; monocarps 2 to 8, 30-60 mm long, 10-20 mm in diameter, oblong, apex apiculate, <b>densely pubescent, finely warty, longitudinally 4 to 6 ribbed, resembling that of a peanut</b>, light brown when ripe; seeds ca. 20 per monocarp, 10-15 mm long, 7-9 mm in diameter, flattened ellipsoid; aril absent. Distribution. A mainly West African species, but with a disjunct distribution in West and Central Africa, from Liberia to Côte d’Ivoire, and from Nigeria to Gabon. In Cameroon known from the South-West region. Habitat. A rare species in Cameroon known from three old collections (including the type) plus a more recent one we did not see; in lowland primary and secondary rain forest. Altitude 0-400 m a.s.l. Local and common names known in Cameroon. None recorded. IUCN conservation status. Least Concern (LC) (Cosiaux et al. 2019a t) Uses in Cameroon. None reported. Notes. <i>Uvariastrum insculptum</i> is distinguishable by its densely pubescent petioles and upper leaf midrib, and its impressed venation of the upper side of the leaves. Specimens examined. <b>South-West Region</b>: Likomba-Pflanzung 15-35 km NE von Victoria [Limbe], 4.1°N, 9.333°E, <i>01 December 1928</i>, <i>Mildbraed G.W.J.</i> 10795 (A,K); Johann-Albrechtshöhe [Kumba] area 4.63°N, 9.416°E, <i>1896</i>, <i>Staudt A.</i> 740 (B,COI,G,K,P,P,S); Johann-Albrechtshöhe [Kumba] area 4.63°N, 9.416°E, <i>1897</i>, <i>Staudt A.</i> 900 (G).
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 375-377, DOI: 10.3897/phytokeys.207.61432
description: {"references": ["Couvreur, TLP, 2014. Revision of the African genus Uvariastrum (Annonaceae). PhytoKeys 33: 1 - 40, DOI: https://doi.org/10.3897/phytokeys.33.5907", "Le Thomas, A, 1969b. Annonacees. In: Aubreville, A, Ed., Flore du Gabon. Museum National d'Histoire Naturelle, Paris: 1 - 371", "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"]}