4. Trichoscypha bracteata Breteler, sp. nov.

T. bijugae Engl. affinis disco glabro et inflorescentia compacta, ab ea differt bracteis grandibus persistentibus, staminibus inflexis et disco floris masculis majore, perspicue exposito, irregulatim plicato.

TYPUS. — Walker s.n., Gabon, St. Martin, ♂ fl. July 1939 (holo-, P!; iso-, WAG!) .

Medium sized tree. Branchlets appressedpubescent. Leaves 7-13-foliolate; petiole and rachis appressed-puberulous; leaflets alternate to subopposite, elliptic to lanceolate, 2-4 times as long as wide, (4-)8-15 × (1.5-) 2.5-5 cm, rounded to cuneate at base, shortly acuminate at apex, glabrous above exept for the impressed, pubescent midrib, beneath appressed-puberulous on midrib and the 9-12(-14) pairs of main lateral nerves, sparsely so to glabrous on the remaining surface. Inflorescence (sub)terminal, paniculate, compact, up to c. 5 cm long, densely bracteate until anthesis, pubescent; main bracts subtending the flower clusters boat-shaped, ± keeled, 5-10 mm long, appressed-pubescent outside, appressed-puberulous inside; secondary bracts and bracteoles much smaller. Flowers 4(-5)-merous; male flower: pedicel 2-3 mm long, pubescent; calyx c. 1 mm long, shortly lobed, appressed-puberulous outside; petals narrowly imbricate, spreading to reflexed, ovate-elliptic, c. 2.5 × 2 mm, glabrous; stamens inflexed, slightly shorter than petals, glabrous; disc well exposed, ± quadrate, 1.5-2 mm across, irregularly plicate, glabrous. Pistillode glabrous. Female flowers and fruits unknown. — Figs 1D; 4; 6.

HABITAT AND DISTRIBUTION. — Rain forest of W Gabon. Alt. below 300 m.

NOTES. — The calyx of Trichoscypha bracteata is distinctly appressed-puberulous outside in bud, but at anthesis it is glabrous or nearly so (Fig. 6 F). I have never before observed this phenomenon so clearly in a single specimen (see also BRETELER 2001: 248).