Uvariodendron (Engl. & Diels) R.E.Fr., Acta Horti Berg. 10: 51, 1930

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. & Sonke, Bonaventure, 2022, Flora of Cameroon - Annonaceae Vol 45, PhytoKeys 207, pp. 1-532 : 384

Uvariodendron (Engl. & Diels) R.E.Fr., Acta Horti Berg. 10: 51, 1930

= Uvaria L. sect. Uvariodendron Engl. et Diels in Engl., Monogr. Afr. Pilanzenf. 6: 8, 1901.

Type species.

Uvariodendron fuscum (Benth.) R.E.Fr. (≡ Uvaria gigantea Engl.)

Description.

Trees, 3-20 m tall, d.b.h. up to 20 cm; stilt roots or buttresses absent. Indumentum of simple hairs or absent. Leaves: petiole 4-20 mm long, 1-9 mm in diameter; blade 13-70 cm long, 3.6-15 cm wide, ovate or elliptic or obovate or oblong, apex acuminate to emarginate, acumen 0.7-2 cm long, base acute to rounded; midrib sunken or flat; secondary veins 11 to 36 pairs per side; tertiary venation reticulate. Individuals bisexual; inflorescences cauliflorous or ramiflorous on old leafless branches, axillary, 1 to 3 per inflorescence; pedicel 1-19 mm long; in fruit 6-38 mm long; bracts 2 to 6, several basal and one upper towards the middle of the pedicel; sepals 3, valvate, basally fused, 6-35 mm long, apex acuminate, base truncate; petals free, sub equal; outer petals 3, valvate, 12-33 mm long, 8-25 mm wide, ovate, apex acuminate, base truncate; inner petals 3, valvate, 6.5-26.5 mm long, 5-17 mm wide, ovate, apex acute, base truncate; stamens 200 to 5000, 2-5 mm long, linear to narrowly oblong; connective discoid; staminodes absent; carpels free, 6 to 104, 3-7 mm long, stigma bilobed. Monocarps sessile or shortly stipitate; monocarps (1) 5 to 63, 20-70 mm long, 12-30 mm in diameter, globose or ellipsoid or oblong, apex acute or rounded; seeds 6-29 mm long, 4-21 mm in diameter, ellipsoid to flattened ellipsoid or oblong; aril absent.

Taxonomy.

Le Thomas (1969b); Dagallier et al. (in prep.).

A genus of 14 species from West, Central and East Africa; in Cameroon five species, none endemic.