Calyx campanulate. Wings obovate. Ovary almost sessile. 275 275. Upper calyx-teeth united to the middle. Corolla red or violet; standard equalling the wings, spurred or gibbous on the back; keel not beaked. Style-apex broadened, hairy round the stigma. Fruit flat. Seeds without an outgrowth at the hilum. Climbing herbs.--Species 1. Naturalized in West Africa. Used as a medicinal and ornamental plant. (_Bradburya_ Rafin., under _Clitoria_ L.) =Centrosema= DC. Upper calyx-teeth united wholly or for the greatest part. Standard not spurred at the back, but auricled at the base. Style-apex slightly or not thickened. Fruit more or less inflated. Seeds with an outgrowth near the hilum. 276 276. Style with a crown of hairs beneath the large ovoid stigma. Wings longer than the keel, but shorter than the standard. Stipules long-spurred.--Species 1. Southern West Africa (Congo). =Vignopsis= De Wild. Style bearded on the inner face towards the top, or penicillate round the small terminal stigma. Wings adhering to the keel.--Species 60. Tropical and South Africa. Some species yield fodder and edible fruits or seeds, or serve as ornamental plants. =Dolichos= L. 277. Keel spirally twisted. Ovary surrounded by a cupular disc. Stigma lateral or oblique. 278 Keel more or less curved inwards, but not spiral. 279 278. Keel with a long spur; wings free. Ovary stalked. Ovules 2-3. Style with a pointed dorsal appendage at the apex. Flowers violet or whitish, without bracteoles.--Species 3. Central Africa. One species (_Ph. venenosum_ Balf., Calabar bean) has poisonous seeds used in ordeals and medicinally. =Physostigma= Balf. Keel without a spur, but sometimes with two gibbosities; wings adhering to the keel. Ovary almost sessile. Ovules numerous. Style without a dorsal appendage at the apex.--Species 20. Tropical and South-east Africa; one species (_Ph. vulgaris_ L.) cultivated also in extra-tropical regions. The fruits and seeds of some species (beans) are eaten and used for preparing starch and medicaments, those of others are poisonous. Several species are used as ornamental or fodder-plants. =Phaseolus= L. 279. Stigma lateral, situated beneath the apex of the style. 280 Stigma terminal, but sometimes oblique. 283 280. Style-apex bent down towards the stigma. Stigma globose, blunt or notched. Wings oblong, equalling the blunt keel. Fruit flat. Leaflets usually toothed.--Species 2. Cultivated in the tropics. They yield fibre used for rope-making, and edible roots and seeds, from which also starch and medicaments are prepared. (_Cacara_ Thouars). =Pachyrrhizus= Rich. Style-apex bent back. Fruit turgid. 281 281. Fruit subglobular, 1-2-seeded, ripening under ground. Ovules 2-3. Stigma 2-lobed. Corolla yellow; keel blunt. Creeping herbs. Racemes 1-3-flowered.--Species 1 (_V. subterranea_ Thouars). Cultivated in Tropical and South Africa. Yields edible fruits and oily seeds. =Voandzeia= Thouars