Prostrate, trailing herb. Leaflets 3, oval to obovate, narrow at base, rounded at the apex; flowers yellow; pod 2-2½ in., broadly linear, subcylindrical. Nubia. 334 =Voandzeia subterranea= _Thouars._ ABU GAWI—Arab. Herb. Leaves 3-foliolate; pod 1-seeded, ripens underground. Flowers 1-3 on flexuous peduncle which is at first only up to ½ in. long. Cor. yellow, often abortive. Nuba Mts. Prov.; Bahr El Ghazal Prov.; Boma Plateau. Boiled and eaten for food, but not of high value. 335 =Psophocarpus palustris= _Desv._ Herbaceous climber with lilac-coloured flowers and short 4-winged pods. Root tuberous. Bahr El Ghazal Prov. (Mittu-land: Mvolo); Mongalla Prov. (Kenissa). 336 =Dolichos Lablab= _Linn._ LUBIA—AFIN—Arab. Herbaceous twiner. Leaflets 3, broadly ovate-rhomboid; flowers usually purple; style bent, much laterally flattened, strongly bearded. Pod oblong up to 2 in. long and nearly 1 in. broad, 2-4 seeded. Northern Sudan. Cultivated largely as a fodder crop. =D. Schweinfurthii= _Harms._ Leafless or nearly so at time of flowering; stems erect, simple, about 1 ft. high. Leaves trifoliolate, subsessile; leaflets oblanceolate with 3 parallel nerves about 5 in. long, glabrous. Flowers in clusters, ¾ in. long. Bahr El Ghazal Prov. =D. pseudo-pachyrhizus= _Harms._ JEKORO—Golo. Climber with a tuberous root which attains a length of 6-8 ft.; leaves 3-fol.; leaflets more or less lobed, 3-nerved at the base, up to 6 in. long and broad; very glabrous. Pods velvety, 4 in. long. White Nile & Bahr El Ghazal Provinces. Commonly cultivated in tropics, the tuberous roots being eaten as a food, and a starch obtained therefrom. Both the tubers and the beans contain a poisonous resin which is an active fish poison. In the Bahr El Ghazal the tuber is mixed with the sap of the Heglig and used as a substitute for soap. =D. splendens= _Welw._ Undershrub, 4 ft. high, stems densely grey-silky. Leaflets 3, densely grey-silky, tomentose beneath. Flowers in long lax, terminal racemes. Cor. bright red, 1 in. deep. Pod over 2 in. long, linear, recurved, grey downy, with ½ in. long style twisted at the base. Mongalla Prov. =D. uniflorus= _Lam._ Twining perennial. Leaflets 3, ovate-lanceolate or lanceolate, acute, glabrous; corolla yellow; pod over 2 in. long, flattened, with a long beak. Kassala Prov. (Gallabat). =D. biflorus= _Linn._ Erect, hairy herb, nearly allied to foregoing; flowers yellowish-white. Pod linear, nearly straight, 1¼ in. long, tipped with the persistent style. Bahr El Ghazal Prov. (around Jur Ghattas). An important food, fodder and green manure crop. 337 =Sphenostylis Schweinfurthii= _Harms._ Herb up to 6 ft. high. Leaflets 3, linear-lanceolate, emarginate, mucronate, 3½ in. long, ½ in. broad, glabrous, reticulate. Racemes head- like, axillary, few-flowered. Flowers yellow. Pod linear, pubescent. Bahr El Ghazal Prov. (Jur-land). =S. stenocarpus= _Harms._