Entada dolichorrhachis Brenan, Kew Bull. 20: 374. 1966. (publ. Jan. 1967).

Type.

ZAMBIA. Mbala (Abercorn) District, Lufubu River, Iyendwe Valley, on path to Shulu Kwesa Village, H.M. Richards 11952 (holotype: K; isotypes: BR [BR0000006251536], LISC [LISC001666], NY [NY00002026], SRGH) .

Description.

Geoxylic suffrutex with erect annual stems, 1-10 cm tall, young shoots pubescent (Figs 2D, 11A). Leaves: elongate and trailing on the ground; rachis (15-)42-65(-90) cm long, expanding from the apex during the growing season, tendrils lacking; pinnae 19-35 pairs on mature leaves, 2.7-5 cm long, with 6-9(-16) pairs of leaflets; leaflets (5-)8-17(-20) × 2.5-9.3 mm, ovate-oblong, asymmetric, apex rounded and mucronate, base oblique, lamina glabrous above, pubescent below (Fig. 11D). Inflorescence: an axillary spiciform raceme, 3.4-10 cm long, 1-2 per axil, rachis densely pubescent (Fig. 11B). Flowers: greenish-yellow, pedicels 1.5-2.5 mm long; calyx 1.5-2 mm long, deeply toothed, pubescent; petals pale dull yellow, 4.75-5.75 mm long; stamen filaments 7-10 mm long (Fig. 11C). Fruit: a torulose, straight craspedium, 3-6.5 × 1.5-1.8 cm, with transverse septa between seeds dividing the fruit into one-seeded segments which, upon ripening, fall from the persistent replum; segments umbonate over seeds (Fig. 11D). Seeds: ovate, laterally compressed, 9 × 8 mm, with open pleurogram.

Distribution.

Zambia.

Habitat and ecology.

Woodland and open riverbanks, on sandy soil; 780-1620 m alt.