Uvariodendron fuscum var. giganteum (Engl.) Dagallier &amp; Couvreur 2022, comb. nov.
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
Uvariodendron
Uvariodendron fuscum

description: Uvariodendron fuscum var. giganteum (Engl.) Dagallier &amp; Couvreur comb. nov. Figs 123, 124; Map 15F ≡ Uvariodendron giganteum (Engl.) R.E.Fr., Acta Horti Berg. 10: 62, 1930; Uvaria gigantea Engl., Notizbl. Königl. Bot. Gart. Berlin 2: 292, 1899; Uva gigantea (Engl.) Kuntze, Deutsche Bot. Monatsschr. 21: 173, 1903. Type. Cameroon. Central Region; Yaoundé, <i>Zenker G.A. &amp; Staudt A. 108</i>, 1895: lectotype designated by Fries (1930), p. 62, sheet destroyed at B, sheet here designated: P[P00362654]; isolectotype: COI[COI00004926]. Description. Differs from the type variety in having <b>young branches and petioles covered with long soft hairs producing a whitish appearance</b> quickly falling off (vs. young branches and petiole sparsely pubescent to glabrous); leaves <b>30-70 cm long and 8.2-22.5 cm wide</b> (vs. 15.9-45 cm long and 4.3-11.8 cm wide), <b>secondary veins 22 to 33</b> (vs. 15 to 24), and flowers with <b>sepals 21-30 mm long</b> (vs. 11-23 mm long); <b>carpels 33 to 104</b> (vs. 20 to 70). Distribution. From southern Nigeria to Gabon and Democratic Republic of the Congo; in Cameroon known from the East, South, Central and South-West regions. Habitat. a common variety; in lowland or premontane primary or old secondary rain forests, on inundated soils or along streams or rivers. Altitude: 100-1300 m a.s.l. Vernacular names (as assigned to <i>U. giganteum</i>): Obom, ossoé (Yaoundé, <i>Biholong 279</i>), Limboto (Bakweri, <i>van Andel 3761</i>). IUCN conservation status. Least Concern (LC) (Cheek 2014b). Uses in Cameroon. None reported. Notes. This variety is more common and widespread than the type variety. Most of these characters provided above overlap with the type variety. Without the young branches covered with long soft hairs it can be hard to identify some specimens as var. Uvariodendron giganteum giganteum with certainty. The specimen <i>Zenker G.A. &amp; Staudt A. 108</i>, defined to be the type specimen by Fries (1930), was not found in B (lost or destroyed), so we make the duplicate from P as the lectotype and the duplicate from COI as the isolectotype. Selected specimens examined. <b>Central Region</b>: Mont Mbam Minkon on trail 5 km from Nkol Nyada village, 3.96°N, 11.40°E, <i>21 March 2013</i>, <i>Couvreur T.L.P.</i> 419 (WAG,YA); Yaoundé, 3.87°N, 11.52°E, <i>1895</i>, <i>Zenker G.A.</i> 108 (P); Yaundé, 3.86°N, 11.51°E, <i>Feburary 1895</i>, <i>Zenker G.A.</i> 698 (K). <b>East Region</b>: 80 km south of Yokadouma 30 km after Ngato 15 km after river ALPICAM 'base de vie’ then 40 km on forestry road starting 4 km before Maséa village, 3.16°N, 14.70°E, <i>05 March 2019</i>, <i>Couvreur T.L.P.</i> 1206 (MPU,WAG,YA); 66 km south of Yokadouma 30 km after Ngato 15 km after river ALPICAM 'base de vie’ then 40 km on forestry road starting 4 km before Maséa village, 3.08°N, 14.67°E, <i>08 March 2019</i>, <i>Couvreur T.L.P.</i> 1229 (MPU,WAG,YA). <b>South Region</b>: Près d’Alati-Ancienne piste Alati-Mintom II, 2.2°N, 13.42°E, <i>17 January 1973</i>, <i>Biholong M.</i> 279 (P,YA); Massif de Ngovayang village de Atog Boga, 3.22°N, 10.50°E, <i>04 September 2015</i>, <i>Droissart V. 2125</i> (BRLU); Bipindi, 3.08°N, 10.41°E, <i>1898</i>, <i>Zenker G.A.</i> 1438 (L). <b>South-West Region</b>: Nyasoso village on max’s trail to Mt 4.82°N, 9.699°E, <i>05 April 2016</i>, <i>Couvreur T.L.P.</i> 1057 (WAG,YA); on trail from Ekongo village located 5 km before the entrance to Limbe 7 km on secondary road On flank of Mt Etinde 100 m in Mont Cameroon National Park, 4.07°N, 9.133°E, <i>16 October 2013</i>, <i>Couvreur T.L.P.</i> 512 (WAG,YA); Bakossi Mountains 1-8 km NNE of Menyum Village, 5.05°N, 9.612°E, <i>22 May 1987</i>, <i>Doumenge C.</i> 473 (L,P); Ebondji, 4.76°N, 9.598°E, <i>08 June 2017</i>, <i>Kamdem N.</i> 557 (YA); Forest trail 2 km south from Etube-Tape village, 4.85°N, 9.7°E, <i>02 February 1995</i>, <i>Lane P.</i> 501 (K,WAG,YA); Cameroon Mountain, 4.12°N, 9.187°E, <i>21 June 2001</i>, <i>van Andel T.R.</i> 3761 (U,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 396-399, DOI: 10.3897/phytokeys.207.61432
description: {"references": ["Fries, RE, 1930. Revision der Arten einiger Anonaceen-Gattungen I. Acta Horti Bergiani 10: 1 - 128", "Le Thomas, A, 1969b. Annonacees. In: Aubreville, A, Ed., Flore du Gabon. Museum National d'Histoire Naturelle, Paris: 1 - 371", "Cheek, M, 2014b. Uvariodendron giganteum. The IUCN Red List of Threatened Species: e.T45420A10996627. https://doi.org/10.2305/IUCN.UK.2004.RLTS.T45420A10996627.en"]}