Letestudoxa lanuginosa Le Thomas, Adansonia ser. 2, 6: 145 1966
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
Letestudoxa
Letestudoxa lanuginosa

description: Letestudoxa lanuginosa Le Thomas, Adansonia sér. 2, 6: 145, 1966 Figs 42, 43; Map 6A Type. Gabon. Woleu-Ntem; Ncout, <i>Le Testu G.M.P.C. 9320</i>, 13 Oct 1938: lectotype, sheet here designated: P[P00364781]; isotypes: P[P00364782, P00364783]. Description. Liana, 20 m tall, d.b.h. 2-3 cm in diameter; stilt roots or buttresses absent. <b>Indumentum of simple hairs</b>; <b>old leafless branches densely pubescent to tomentose, young foliate branches densely pubescent to tomentose.</b> Leaves: petiole 6-12 mm long, 3-6 mm in diameter, densely pubescent, slightly grooved, blade inserted on top of the petiole; <b>blade 15-28 cm long, 7-12 cm wide, obovate to sometimes oblong</b>, apex rounded or emarginate or obcordate or mucronate, acumen 0.1-1.9 cm long, <b>base cordate</b>, coriaceous, below densely pubescent when young, densely pubescent when old, above glabrous when young and old, concolorous; midrib sunken or flat, above densely pubescent when young and old, below densely pubescent when young, densely pubescent when old; secondary veins 11 to 18 pairs, densely pubescent below; tertiary venation reticulate. Individuals bisexual; inflorescences ramiflorous on old leafless branches, extra axillary. Flowers with 9 perianth parts in 3 whorls, 1 per inflorescence; pedicel 3-11 mm long, 4-7 mm in diameter, densely pubescent; in fruit unknown; bracts 2, one basal and <b>one upper towards the upper half of pedicel</b>, basal bract 8-13 mm long, 10-15 mm wide; upper bract 8-18 mm long, 6-10 mm wide, <b>clasping the flower bud</b>; sepals 3, valvate, completely fused, tearing at anthesis, 10-20 mm long, base truncate, brown, pubescent outside, pubescent inside, margins flat; petals free, outer petals longer than inner; outer petals 3, imbricate, 30-50 mm long, 30-40 mm wide, ovate, apex rounded to acute, base attenuate, orange to red, margins crisped, densely pubescent inside, pubescent outside; inner petals 3, imbricate, 25-35 mm long, 15-25 mm wide, elliptic to ovate, apex acute, base attenuate, claw ca. 5 mm long, orange to red, margins wavy, densely pubescent inside, pubescent outside; stamens 750 to 800, in 16 to 20 rows, 7-10 mm long, broad; connective flattened, pubescent; staminodes absent; carpels free, 150, ovary 2-2.5 mm long, stigma capitate, pubescent. Fruits unknown. Distribution. Known from southern Cameroon to Gabon; in Cameroon known from the South region. Habitat. A frequent species when present; growing on non-inundated soils, in primary or secondary forests, sometimes near rivers and swampy areas. Altitude 100-600 m a.s.l. Local and common names known in Cameroon. None recorded. IUCN conservation status. Not evaluated. Uses in Cameroon. None reported. Notes. See under <i>L. bella</i> for differences between the two species. This species can be confused with <i>Uvaria bipindensis</i> (also a liana) by the size of its leaves (to 27 cm long) and cordate shape of the leaf base. They differ however but the presence of stellate hairs in <i>Uvaria bipindensis</i>. Specimens examined. <b>South Region</b>: Ma’an 3 km on small road towards Ntem river, 2.34°N, 10.63°E, <i>25 February 2018</i>, <i>Couvreur T.L.P.</i> 1148 (MPU,WAG,YA); Campo Ma’an National Park 11 km on trail from Ebinanemeyong village on road 7 km from Nyabessan to Campo town, 2.48°N, 10.33°E, <i>13 February 2015</i>, <i>Couvreur T.L.P.</i> 697 (WAG,YA); Campo Ma’an National Park 11 km on trail from Ebinanemeyong village on road 7 km from Nyabessan to Campo town, 2.48°N, 10.33°E, <i>13 February 2015</i>, <i>Couvreur T.L.P.</i> 698 (WAG,YA); Campo-Ma’an area Boucle du Ntem, 2.34°N, 10.58°E, <i>16 February 2001</i>, <i>Tchouto Mbatchou G.P.</i> 3166 (KRIBI,WAG).
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 156-159, DOI: 10.3897/phytokeys.207.61432