Leaves with 4-5 leaflets, of which the 1-2 lowest have usually the appearance of stipules. Stipules very small or wanting. Keel gibbous on each side. Seeds globular or lenticular. 137 137. Fruit longitudinally 4-winged or 4-angled.--Species 5. North Africa. Used as fodder or as vegetables. (Under _Lotus_ L.) =Tetragonolobus= Scop. Fruit neither 4-winged nor 4-angled.--Species 50. Some of them are used as vegetables, fodder, or ornamental plants. (Including _Heinekenia_ Webb, _Lotea_ Medik., and _Pedrosia_ Lowe). =Lotus= L. 138. (131.) Petals, at least the lower, adnate below to the staminal tube. Standard oblong or ovate. Erect or prostrate herbs. Leaves pinnate or palmate; leaflets 3-5, usually toothed. Stipules adnate to the leafstalk. Flowers solitary or in umbels, heads, or spikes.--Species 70. North and South Africa and mountains of Central Africa. Many of them are used as fodder or in medicine. “Clover.” =Trifolium= L. Petals free from the staminal tube. Leaflets entire, rarely toothed, but then more than 5. Stipules usually free or wanting. 139 139. Leaves unifoliolate, stipellate; stalk winged. Flowers in spikes. Calyx-lobes unequal. Uppermost stamen free at the base, but united with the others in the middle. Ovary sessile. Ovules 3-4.--Species 4. Central Africa. (Under _Desmodium_ Desv.) =Droogmansia= De Wild. Leaves pinnate, digitate, or reduced to the usually broadened stalk. 140 140. Leaves equally pinnate or reduced to the stalk. Leaflets entire. Stipules leaf-like. Flowers solitary or in racemes. Ovary more or less distinctly stalked. Style-apex broadened and bearded. Fruit 2-valved. Seeds with an outgrowth near the hilum. Herbs or undershrubs. 141 Leaves unequally pinnate or digitate. Ovary sessile or nearly so. 142 141. Style-apex laterally compressed with reflexed edges, hence grooved above. Corolla white or red; wings adhering to the keel. Herbs with tendrils. Leaflets 2-6.--Species 3. North Africa, also cultivated in the tropics. They yield fodder and edible seeds (peas), from which also starch is prepared. =Pisum= L. Style-apex compressed dorsally, with the edges bent downwards or straight. (See 128.). =Lathyrus= L. 142. Stem woody throughout. Leaves unequally pinnate. Flowers in racemes or fascicles. Upper calyx-teeth united for the greatest part. Corolla red or violet; wings slightly adhering to the keel; standard with a callus at the base. Fruit linear, flat.--Species 15. Tropical and South-east Africa. The seeds of some species are used as a fish-poison. =Mundulea= DC. Stem herbaceous or woody at the base only. 143 143. Flowers in racemes. Calyx-teeth unequal. Corolla blue; standard suborbicular, with a callus and two auricles; keel somewhat longer than the wings and the standard. Uppermost stamen cohering with the others at the base. Style-apex bearded. Ovules 2. Twining undershrubs.--Species 1. Equatorial East Africa (Kilimandjaro). =Spathionema= Taub. Flowers solitary or in umbels or heads. 144