Uvaria klaineana Engl. & Diels, Notizbl. Konigl . Bot. Gart. Berlin 2: 294, 1899

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 : 358

Uvaria klaineana Engl. & Diels, Notizbl. Konigl. Bot. Gart. Berlin 2: 294, 1899

Figs 110 , 111 ; Map 14A

≡ Uva klaineana (Engl. & Diels) Kuntze, Kuntze, Deutsche Bot. Monatsschr. 21: 173, 1903.

= Uvaria klaineana var. chrysophylla Pellegr., Bull. Soc. Bot. Fr. Mém. 31: 60, 1949. Type. Gabon. Ngounié, Moucongo, Le Testu G.M.P.C. 6337, 20 Oct 1926: lectotype, here designated: BM[BM000554053]; isolectotypes: EA[EA000002481, EA000002480]; MO[MO-247263]; LISC[LISC000398].

Type.

Gabon. Estuaire; Libreville, Klaine T.-J. 235, 14 Sep 1896: lectotype, sheet here designated: P[P00362663]; isotypes: B[B 10 0153078]; P[P00362707, P00362706, P00362710, P00362712, P00362714, P00362709, P00362708, P00362662] .

Description.

Scrambling shrub to liana, 3-20(30) m tall, d.b.h. unknown; stilt roots or buttresses absent. Indumentum of stellate hairs; old leafless branches glabrous, young foliate branches tomentose. Leaves: petiole 2-5 mm long, 1-2 mm in diameter, tomentose covered with minute stellate hairs, grooved, blade inserted on top of the petiole; blade 2-9 cm long, 1-3 cm wide, oblong to elliptic, apex obtuse, base rounded to obtuse, subcoriaceous, below densely pubescent with short persistent stellate hairs covering the surface, above sparsely pubescent when young, glabrous when old; midrib sunken or flat, above densely pubescent with fasciculate hairs when young, pubescent when old, below densely pubescent when young and old; secondary veins 7 to 12 pairs, pubescent above; tertiary venation reticulate, indistinct. Individuals bisexual; inflorescences ramiflorous on young foliate branches, leaf opposed or extra axillary. Flowers with 9 perianth parts in 3 whorls, 1 per inflorescence; pedicel 5-8 mm long, 1-2 mm in diameter, tomentose; in fruit 6-8 mm long, 2-3 mm in diameter, pubescent; bracts 2, one basal and one towards the upper half of pedicel, basal bract 1-2 mm long, 1 mm wide; upper bract 4-5 mm long, 3-4 mm wide; sepals 3, valvate, basally fused, ca. 4 mm long, 5-6 mm wide, ovate, apex obtuse, base truncate, light brown, pubescent outside, glabrous inside, margins flat; petals free, sub equal; outer petals 3, 15-17.5 mm long, 10-12 mm wide, ovate to oblong, apex rounded, base truncate, green to light yellow, margins flat becoming revolute, pubescent outside, pubescent to glabrous inside; inner petals 3, imbricate, 15-16 mm long, 10-12 mm wide, ovate to oblong, apex obtuse, base truncate, green to light yellow, margins flat becoming revolute, pubescent outside, sparsely pubescent to glabrous inside; stamens 130 to 150, in 6 to 7 rows, 2-3 mm long, linear; connective discoid, glabrous, yellow to cream; staminodes absent; carpels free, ca. 100, ovary ca. 2 mm long, stigma flat, densely pubescent. Monocarps stipitate, stipes 25-40 mm long, 1-2 mm in diameter, centrally inserted; monocarps 30 to 50, 12-18 mm long, 8-15 mm in diameter, globose to ovoid, apex rounded, densely tomentose, verrucose, faintly-one ribbed, green when immature; seeds 8 to 10 per monocarp, 7-9 mm long, 4-5 mm in diameter, flattened ellipsoid; aril absent.

Distribution.

A central African species, known mainly from Gabon, but also from Cameroon, Equatorial Guinea and Republic of the Congo; in Cameroon known from the South region.

Habitat.

A rare species in Cameroon; in lowland secondary or primary rain forests. Altitude 0-100 m a.s.l.

Local and common names known in Cameroon.

None recorded.

IUCN conservation status.

Not evaluated.

Uses in Cameroon.

None reported.

Notes.

Uvaria klaineana is distinguished by its small elliptic leaves (the smallest of Cameroonian species), that are strongly discolorous with an uniform indumentum of whitish stellate hairs on the lower side and weak secondary veins above.

In Cameroon, this species is only known from a single collection in the Massif des Mamelles near Campo ( Satabié 954).

Specimen examined.

South Region: Massif des Mamelles 25 km NE Campo Nyabessan, 2.57°N, 9.953°E, 01 January 1992, Satabié B. 954 (P,YA).

Figures

Map 14. A Uvaria klaineana B Uvaria mollis C Uvaria muricata var. yalingensis D Uvaria obanensis E Uvaria osmantha F Uvaria poggei G Uvaria scabrida H Uvariastrum insculptum I Uvariastrum pierreanum. White borders represent region limits in Cameroon; green patches represent protected areas (see methods and Suppl. material 1: Fig. S 1).

Figure 110. Uvaria comperei (2 / 2) A flower, top view B flower, side view, note free sepals C fruit with long stipitate monocarps. Uvaria klaineana D branch E flower F detail of flower and receptacle G fruit A, B Couvreur 545 C Couvreur 893, Gabon D, G Couvreur 919, Gabon E, F Couvreur 546, Gabon. Photos Thomas L. P. Couvreur.

Figure 111. Uvaria klaineana A flowering branch B detail of pubescence on lower side of leaf C upper bract, side and front views D flower, top view E outer petal, inner view F detail of flower, all petals removed G stamen H carpel, side and front views I fruit J longitudinal section of monocarp K seeds, side and front views A-J from Klaine 235. Drawings by Helene Lamourdedieu, Publications Scientifiques du Museum national d'Histoire naturelle, Paris; modified from Le Thomas (1969 b, pl. 10, p. 65).