Phylogenomic inference of the African tribe Monodoreae (Annonaceae) and taxonomic revision of Dennettia, Uvariodendron and Uvariopsis Author Dagallier, Leo-Paul M. J. https://orcid.org/0000-0002-3270-1544 DIADE, Universite de Montpellier, IRD, CIRAD, Montpellier, France & Institute of Systematic Botany, The New York Botanical Garden, Bronx, New York 10458, USA leopauldagallier@gmail.com Author Mbago, Frank M. The Herbarium, Botany Department, Box 35060, University of Dar es Salaam, Dar es Salaam, Tanzania Author Couderc, Marie https://orcid.org/0000-0001-7297-155X DIADE, Universite de Montpellier, IRD, CIRAD, Montpellier, France Author Gaudeul, Myriam Institut de Systematique, Evolution, Biodiversite (ISYEB), Museum National d'Histoire Naturelle-CNRS-SU-EPHE-UA, 57 rue Cuvier, CP 39, 75231 Paris, Cedex 05, France Author Grall, Aurelie https://orcid.org/0000-0002-1613-4703 Herbaria Basel, Department of Environmental Sciences, University of Basel, Basel, Switzerland & Herbarium, Royal Botanic Gardens, Kew, Richmond, Surrey, TW 9 3 AE, UK Author Loup, Caroline DIADE, Universite de Montpellier, IRD, CIRAD, Montpellier, France Author Wieringa, Jan J. https://orcid.org/0000-0003-0566-372X Herbier MPU, DCSPH - CC 99010, Universite de Montpellier, 163 rue A. Broussonnet, F- 34090 Montpellier, France Author Sonke, Bonaventure https://orcid.org/0000-0002-4310-3603 Naturalis Biodiversity Center, Darwinweg 2, 2333 CR, Leiden, Netherlands Author Couvreur, Thomas L. P. https://orcid.org/0000-0002-8509-6587 DIADE, Universite de Montpellier, IRD, CIRAD, Montpellier, France text PhytoKeys 2023 2023-09-22 233 1 200 http://dx.doi.org/10.3897/phytokeys.233.103096 journal article http://dx.doi.org/10.3897/phytokeys.233.103096 1314-2003-233-1 EB874C2B403C5C42ACE3846B51EE6F22 Uvariodendron fuscum var. giganteum (R.E.Fr.) Dagallier & Couvreur, PhytoKeys 207: 423 (2022) Figs 20 , 21 , 23 ≡ Uvaria gigantea Engl., Notizbl. Koenigl . Bot. Gart. Berlin 2: 292. 1899 (quoad specimens Zenker 108 and 698); Uva gigantea Kuntze, Deutsche Bot. Monatsschr. xxi. 173 (1903); Uvariodendron giganteum (Engl.) R.E.Fr., Acta Horti Berg. 10: 62 (1930). Type. Cameroon - Central Region • G.A. Zenker 108 (lectotype: P! (P00362654), designated by Couvreur et al. (2022) ; isolectotype: COI! (COI00004926); lectotype designed by Fries (1930) as B, but sheet destroyed), Yaounde , Yaunde; 3°52'N , 11°31'E ; alt. 800 m; 1895. Description. Young branches with long soft hairs producing a whitish appearance quickly falling off. Petiole 8-35 mm long, 3.5-8 mm wide. Leaf lamina 357-676 mm long, 84-225 mm wide, length:width ratio 2.5-4, base acute to rounded, apex acute to acuminate, surface below pilose to glabrous when young, glabrous when old; midrib pilose to glabrous below; secondary veins 22-33 pairs. Flower pedicel 0-7.5 mm long. Bracts 1 to 6, upper bract 16-22 mm long, 20-50 mm wide. Sepals 20-30 mm long, 16-26 mm wide. Outer petals 25-40 mm long, 17-30 mm wide. Inner petals 21-40 mm long, 17-29 mm wide, length:width ratio 1.1-1.5, broadly obovate to obovate. Carpels 50 to 100. Fruiting pedicel 9-15 mm long. Monocarps 6 to 24, 20-50 mm long, 11-25 mm wide, length:width ratio 1.7-3.8, cylindrical, curved, acuminate, slightly constricted between the seeds, puberulent, green to brown. Seeds 8-14 per monocarp, ca. 14 mm long, ca. 7 mm wide. Distribution. Element of the Lower Guinean Domain and Congolia Domain of the Guineo-Congolian Region: Cameroon, Democratic Republic of the Congo, Gabon. Habitat and ecology. Lowland to submontane mature or old secondary rain forests, on inundated soils or along streams or rivers. Altitude: 100-1300 m a.s.l. Notes. Ud. fuscum var. giganteum differs from the type variety in having young branches and petiole covered with long soft hairs producing a whitish appearance quickly falling off (vs. young branches and petiole sparsely pubescent to glabrous). Compared to the type variety, it has larger leaves (35.7-67.6 cm long and 8.4-22.5 cm wide, vs. 16-45 cm long and 4.3-11.8 cm wide), with generally more secondary veins (22 to 33 vs. 15 to 24), and flowers with generally greater sepals (20-30 mm long vs. 11-23 mm long) and more carpels (50 to 100 vs. 20 to 70) (Fig. 4 , Table 4 ). Most of these characters overlap and without the young branches covered with long soft hairs it can be hard to place some specimens in the var. Uvariodendron fuscum giganteum with certainty. The specimen Zenker 108, defined to be the type specimen by Fries (1930) , was not found in B (lost or destroyed), so we made the duplicate from P as the lectotype and the duplicate from COI as the isolectotype ( Couvreur et al 2022 ). Additional specimens examined. Cameroon - Central Region • G.A. Zenker 698 (B), Yaounde , Yaunde ; 3°52'N , 11°31'E ; alt. 800 m ; 04 Feb. 1895 • T.L.P. Couvreur 419 (MPU, WAG, YA), Mont Mbam Minkon , on trail, 5 km from Nkol Nyada village ; 3°58'04.91'N, 11°24'08.64'E; alt. 1000 m ; 21 Mar. 2013 - East Region • T.L.P. Couvreur 1206 (MPU, WAG, YA), 60 km south of Yokadouma , 30 km after Ngato , 15 km after river. ALPICAM 'base de vie', then on forestry road starting 4 km before Masea village ; 3°09'55.18'N, 14°42'25.64'E; alt. 587 m ; 05 Mar. 2019 • T.L.P. Couvreur 1229 (MPU, WAG, YA), 60 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 Masea village . Coupe 4-4 of UFA 023; 3°05'08.17'N, 14°40'18.2'E; alt. 622 m ; 08 Mar. 2019 - South Region • G.A. Zenker 1438 (L), Bipinde , Urwaldgebiet ; 3°05'N , 10°25'E ; 1898 • M. Biholong 279 (P, YA), pres d'Alati. Ancienne piste Alati - Mintom II ; 2°11'44.45'N, 13°24'17.61'E; 17 Jan. 1975 - South-West Region • C. Doumenge 473 (L, MO, P) , Cameroon . Bakossi Mountains 1-8 Km NNE of Menyum Village ; 5°01'N , 9°38'E ; alt. 1000 m ; 22 May. 1987 • P. Lane 501 (K, SCA, WAG, YA), Mt Kupe Division. Ndum. Forest trail 2 km south from Etube-Tape village ; 4°51'N , 9°42'E ; alt. 1200 m ; 02 Feb. 1995 • T.L.P. Couvreur 1057 (MPU, WAG, YA), Nyasoso village , on max's trail to Mt Kupe ; 4°49'27.88'N, 9°41'59.42'E; alt. 1227 m ; 05 Apr. 2016 • T.L.P. Couvreur 512 (MPU, YA); Fako , 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°04'19.23'N, 9°08'00.76'E; alt. 959 m ; 16 Oct. 2013 • T.R. van Andel 3761 (MO, SCA, U, WAG), Bokwango. Trail to Mann's spring; 4°07'44'N, 9°11'26'E; alt. 1130 m ; 21 Jun. 2001 . Democratic Republic of the Congo - Orientale • T.B. Hart 910 (WAG); Mambasa, Epulu , Zaire , Zone de Mambasa (Ituri); 1°25'N , 28°35'E ; alt. 750 m ; 23 Mar. 1989 . Gabon - Estuaire • T.-J. Klaine 1690 (P), Environs de Libreville ; 0°25'N , 9°27'E ; 18 Oct. 1899 - Ogooue-Ivindo • N. Halle 3156 (P), Belinga ; 1°05'N , 13°08'E ; 12 Nov. 1964 • N. Halle 430 (K, P), Belinga , mines de fer, le long de la riviere Folley ; 1°07'N , 13°11'E ; 12 Aug. 1966 • N. Halle 549 (K, P), Belinga , mines de fer; 1°08'N , 13°12'E ; alt. 700 m ; 16 Aug. 1966 .