Uvaria L., Sp. Pl. 1: 536 1753
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
Uvaria

description: Uvaria L., Sp. Pl. 1: 536, 1753 = Uva Brun., Thes. Zeylan.: 231, 1737: <i>nom. illegit.</i>, <i>superfl.</i>; Narum Adanson, Fam. 2: 365, 1763: <i>nom. illegit.</i>, <i>superfl.</i>; Xylopiastrum Roberty, Bull. I.F.A.N. 15: 1387, 1953; Melodorum Lour., Fl. Cochinch. 329: 351, 1790; Marenteria Noronha ex Thouars, Gen. Nov. Madagasc.: 18, 1806; Cyathostemma Griff., Not. Pl. Asiat. 4: 707, 1854; Ellipeia Hook.f. &amp; Thomson, Fl. Ind. 104, 1855; Anomianthus Zoll., Linnaea 29: 324, 1858; Tetrapetalum Miq., Ann. Mus. Bot. Lugduno-Batavi 2: 23, 1865; Rauwenhoffia Scheff., Ann. Jard. Bot. Buitenzorg 2: 21, 1881; Uvariella Ridl., Fl. Malay. Penins. 1: 22, 1922; Ellipeiopsis R.E.Fr., Verstreute Beob. Fam. Annon.: 41, 1953; Dasoclema J.Sinclair, Gard. Bull. Singapore 14: 273, 1955; Balonga Le Thomas, Adansonia sér. 2, 8: 106, 1968. Type species. <i>Uvaria zeylanica</i> L. (a South East Asian species). Description. Lianas, up to 20(-30) m tall, d.b.h. up to 20 cm. Indumentum of star, fasciculate and/or simple hairs. Leaves: petiole 2-15 mm long, 1-2 mm in diameter; blade 5-26 cm long, 1-3 cm wide, elliptic, ovate, obovate or oblong, apex acuminate to obtuse, base acute to cordate, discolorous, whitish below or concolorous; midrib sunken or flat; secondary veins 6 to 25 pairs; tertiary venation reticulate or percurrent. Individuals bisexual; inflorescences cauliflorous and ramiflorous on old or young foliate branches, leaf opposed or extra axillary. Flowers with 9 perianth parts in 3 whorls, 1 to 5 per inflorescence; pedicel 2-50 mm long; in fruit 5-60 mm long; bracts 2 (or 1), one basal and one upper, 1-15 mm long; sepals 3, valvate (or imbricate), free or basally fused or completely fused tearing at anthesis, 2-20 mm long, ovate or triangular to semiorbicular, apex acute or acuminate or truncate, base truncate; petals free; outer petals 3, valvate or imbricate, 7-35 mm long, 5-25 mm wide, ovate to elliptic to obovate to semiorbicular, apex acute to rounded, base truncate; inner petals 3, <b>imbricate</b>, 7-35 mm long, 6-25 mm wide, ovate to elliptic to obovate to semiorbicular, apex acute to obtuse to rounded, base truncate; stamens 100 to 400, in 5 to 10 rows, 1-3 mm long, linear to cuneiform; connective discoid or tongue-shaped, glabrous or pubescent; staminodes absent; carpels free, 15 to 70 (or numerous), 2-4 mm long, stigma flat or bilobed or coiled or cylindrical, pubescent or glabrous. Monocarps sessile to stipitate, stipes 5-45 mm long; monocarps 8 to 48, 6-70 mm long, 6-40 mm in diameter, globose or ellipsoid or cylindrical, apex rounded to apiculate, smooth, bumpy, ridged, verrucose or echinate, sometimes strongly ornamented; <b>seeds numerous, bi or uniseriate</b>, 7-15 mm long, 4-10 mm in diameter, ellipsoid or flattened ellipsoid; aril absent. A diverse genus of ca. 200 species distributed across Africa (west to east), Madagascar and in South East Asia, 17 species occur in Cameroon, one endemic. <i>Uvaria</i> is a genus of lianas or scrambling shrubs, most of which have stellate hairs and numerous seeds per monocarp. The taxonomy of this genus remains complicated and a recent continental revision is still lacking. Differences between the species are mostly based on fruit and leaf characters. Taxonomy. There has yet to be a complete taxonomic revision of African and Malagasy <i>Uvaria</i> since Engler and Diels (1901). Taxonomy and keys to species of different regions can be found in: Paiva (1966) and Paiva and Bárrios (2019) for Angola; Le Thomas (1969b) for Gabon; Verdcourt (1971a) for Tropical East Africa, Cavaco et Keraudren (1958) for Madagascar and Hawthorne and Jongkind (2006) for West Africa (Senegal to Ghana). Besides Africa some revisions have been published for South East Asia providing excellent sources for taxonomy and morphological characters within the genus (Utteridge 2000; Zhou et al. 2009, 2010; Meade and Parnell 2018). In the key below, we tried to use as many vegetative characters as possible, although in some cases flower or fruit characters are needed. Using mainly vegetative characters is an advantage, but also has drawbacks linked to some characters that can be variable (e.g. pubescent density could vary). The user should be aware of that and check the descriptions and illustrations carefully to confirm identification. We provide here illustrations to the different types of hairs and combinations which will help with the key (Fig. 101).
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 327-328, DOI: 10.3897/phytokeys.207.61432
description: {"references": ["Engler, A, Diels, L, 1901. Anonaceae. In: Engler, A, Ed., Monographien afrikanischer Pflanzen-Familien und -Gattungen. Engelmann, Leipzig: 1 - 96", "Paiva, JAR, 1966. Revisao das Annonaceae de Angola. Memorias Sociedade Broteriana 19: 5 - 128", "Paiva, J, Barrios, S, 2019. Uvaria botryoides (Annonaceae), a new species from Angola. Kew Bulletin 74: e7. https://doi.org/10.1007/s12225-019-9794-5", "Le Thomas, A, 1969b. Annonacees. In: Aubreville, A, Ed., Flore du Gabon. Museum National d'Histoire Naturelle, Paris: 1 - 371", "Verdcourt, B, 1971a. Annonaceae. In: Milne-Redhead, E, Polhill, RM, Eds., Flora of Tropical East Africa. Crown Agents for Oversea Governments and Administrations, London: 1 - 131", "Hawthorne, WD, Jongkind, CC, 2006. Woody plants of Western African forests: A guide to the forest trees, shrubs and lianes from Senegal to Ghana. Royal Botanic Gardens, Kew, Richmond, UK", "Utteridge, TMA, 2000. Revision of the genus Cyathostemma (Annonaceae). Blumea 45: 377 - 396", "Zhou, L, Su, YCF, Saunders, RMK, 2009. Molecular phylogenetic support for a broader delimitation of Uvaria (Annonaceae), inclusive of Anomianthus, Cyathostemma, Ellipeia, Ellipeiopsis and Rauwenhoffia. Systematics and Biodiversity 7: 249 - 258, DOI: https://doi.org/10.1017/S1477200009003028", "Zhou, L, Su, YCF, Chalermglin, P, Saunders, RMK, 2010. Molecular phylogenetics of Uvaria (Annonaceae): relationships with Balonga, Dasoclema and Australian species of Melodorum. Botanical Journal of the Linnean Society 163: 33 - 43, DOI: https://doi.org/10.1111/j.1095-8339.2010.01045.x", "Meade, CV, Parnell, JAN, 2018. A revised taxonomy for Uvaria (Annonaceae) in continental Asia. Australian Systematic Botany 31: 311 - 356, DOI: https://doi.org/10.1071/SB17051"]}