Uvariopsis congensis Robyns &amp; Ghesq., Ann. Soc. Sci. Bruxelles, Ser. B 53: 322 1933
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
Uvariopsis
Uvariopsis congensis

description: Uvariopsis congensis Robyns &amp; Ghesq., Ann. Soc. Sci. Bruxelles, Ser. B 53: 322, 1933 Figs 130, 140; Map 16A Type. Democratic Republic of the Congo. Bandundu; Lusambo, <i>van Kerkhoven E. s.n.</i>, 16 Aug 1913: lectotype, here designated: BR[BR0000008824318]. Description. Tree to shrub, 2-6 m tall, d.b.h. up to 6 cm; stilt roots or buttresses absent. Indumentum of simple hairs or glabrous; old leafless branches glabrous, <b>young foliate branches sparsely pubescent to glabrous.</b> Leaves: petiole 2-6 mm long, 1-2.5 mm in diameter, <b>glabrous</b>, slightly grooved, blade inserted on top of the petiole; blade 8-17.7 cm long, 2.6-7.7 cm wide, elliptic, <b>apex attenuate to acuminate, acumen 0.5-1.8 cm long</b>, base acute to decurrent, papyraceous, below glabrous when young and old, above glabrous when young and old; midrib sunken or flat, above glabrous when young and old, below glabrous when young and old; secondary veins 7 to 12 pairs per side, glabrous above; tertiary venation reticulate. Individuals unisexual, monoecious; inflorescences sometimes cauliflorous, mainly ramiflorous on young foliate and old leafless branches, axillary. Flowers with 6 perianth parts in 2 whorls, <b>globose in bud</b>, 1 to 2 per inflorescence, male and female inflorescences dimorphic; <b>male pedicels 2.5-6 mm long</b>, 0.5-1 mm in diameter, pubescent; <b>female pedicel: 3.5-8 mm long</b>, ca. 1 mm in diameter, pubescent; in fruit 5-15 mm long, 1-3 mm in diameter, pubescent to glabrous; male and female bracts 1 to 4, several basal and one upper towards the lower half of pedicel, similar in size, ca. 1 mm long, ca. 1 mm wide. Male and female sepals 2, valvate, free, 0.7-1.5 mm long, 1-2 mm wide, triangular, apex attenuate, base truncate, brown, pubescent outside, glabrous inside, margins flat; <b>male and female petals free</b>, 4, 2.5-7 mm long, 3-5 mm wide, ovate, apex acute, base truncate, margins flat, pubescent outside, glabrous, pubescent towards margins inside, light red; male flowers: stamens 300 to 400, in 15 to 20 rows, 0.5 mm long, linear; connective reduced or absent, glabrous, cream; staminodes absent; female flowers: carpels free, 11 to 40, ovary 1.5-3 mm long, stigma globose, densely pubescent. Monocarps stipitate, stipes 0-4 mm long, 1-3 mm in diameter; monocarps 1 to 15, 13-45 mm long, 7-18 mm in diameter, cylindrical, apex rounded, glabrous, smooth, bumpy, green to orange to red when ripe; seeds 2 to 10 per monocarp, 9.5-14 mm long, 7-8 mm in diameter, ellipsoid; aril absent. Distribution. A widespread species with a disjunct distribution in West Africa from Ivory Coast and Ghana, and in Central Africa from eastern Nigeria to the Democratic Republic of the Congo and South Sudan; in Cameroon known from the Central, South and South west regions. Habitat. An uncommon species, in lowland and premontane primary or old secondary rain forests, and in seasonally flooded forest along rivers. Altitude 500-1000 m a.s.l. Local and common names known in Cameroon. None recorded. IUCN conservation status. Least Concern (LC) (Harvey-Brown 2019d). Uses in Cameroon. None reported. Notes. <i>Uvariopsis congensis</i> resembles <i>U. zenkeri</i> in being a small tree with small generally ramiflorous (more rarely cauliflorous, and then few flowered) flowers (in contrast to large mainly cauliflorous flowers in other species). However, <i>U. congensis</i> is glabrous or sparsely pubescent especially in the young foliate branches and petiole (versus very densely pubescent to pubescent in <i>U. zenkeri</i>), has globose flower buds (versus conical), a longer pedicel (2.5-8 mm versus 0-7 mm), petals that are free (versus fused), and glabrous monocarps (versus tomentose). Specimens examined. <b>Central Region</b>: Mt Eloumden 6 km Sud ouest de Yaoundé, 3.81°N, 11.43°E, <i>Achoundong G.</i> 872 (YA); Ca 30 km S of Mbalmayo, 3.33°N, 11.5°E, <i>13 February 1964</i>, <i>de Wilde W.J.J.O</i> 1914 (P,WAG). <b>East Region</b>: Village Nkolbisson 7 km West of Yaoundé, 4.16°N, 14.11°E, <i>15 April 1962</i>, <i>Breteler F.J.</i> 2812 (K,P,WAG); West side of Sangha River, 2.21°N, 16.09°E, <i>01 November 1988</i>, <i>Harris D.J.</i> 1512 (K,P); Bordure de la Sangha au sud de Lidjombo (près de Libongo) à 110 km au N de Ouesso, 2.93°N, 16.04°E, <i>10 April 1971</i>, <i>Letouzey R.</i> 10641 (P,YA); Près Ndongo à 45 km WNW de Moloundou, 2.58°N, 15.29°E, <i>15 March 1973</i>, <i>Letouzey R.</i> 12086 (K,P,WAG,YA); Rive de la Doumé près Bimba (40 km SW de Batouri), 4.16°N, 14.11°E, <i>15 April 1962</i>, <i>Letouzey R.</i> 4755 (K,P,YA); A 11 km au SSW de Kosso (village situé à 60 km au SSW de Batouri, 3.93°N, 14.17°E, <i>25 July 1963</i>, <i>Letouzey R.</i> 5491 (K,P,YA); Myko-Malapa(Molundou), 2.05°N, 15.17°E, <i>21 April 1971</i>, <i>Villiers J.-F.</i> 683 (P,YA). <b>South Region</b>: Rives du Ntem près du confluent de la Kye 16 km ESE d’Ambam, 2.30°N, 11.38°E, <i>07 February 1970</i>, <i>Letouzey R.</i> 10024 (P,YA); Près de Ngomebae 70 km ESE d’Ebolowa sur route de Mvangan, 2.72°N, 11.73°E, <i>24 January 1970</i>, <i>Letouzey R.</i> 9915 (P,YA). <b>South-West Region</b>: Johann-Albrechtshöhe [Kumba] area 4.16°N, 9.2°E, <i>1896</i>, <i>Staudt A.</i> 556 (K,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 411-413, DOI: 10.3897/phytokeys.207.61432
description: {"references": ["Harvey-Brown, Y, 2019d. Uvariopsis congensis. The IUCN Red List of Threatened Species: e.T133045390A149069038. https://doi.org/10.2305/IUCN.UK.2019-2.RLTS.T133045390A149069038.en"]}