301. Standard spurred or gibbous at the apex of the claw. Style broadened above. Fruit flat. Seeds oblong. Stem twining. Flowers large. Bracteoles larger than the bracts. (See 275.) =Centrosema= DC. Standard neither spurred nor gibbous. Flowers small or medium-sized. 302 302. Fruit jointed, flat, usually indehiscent. (See 231.) =Desmodium= Desv. Fruit not jointed, but septate between the seeds, dehiscing by two valves. Corolla red; standard auricled at the base; wings exceeding the keel. Bracts bristle-like. (See 266.) =Glycine= L. 303. (265.) Uppermost stamen united with the others in the middle. Calyx-lobes blunt and very short. Fruit not jointed, indehiscent.--Species 30. Tropics. Some species yield timber, dyes, fish-poison, and medicaments. =Lonchocarpus= H. B. & K. Uppermost stamen free from the base or nearly so, rarely (_Desmodium_) united with the others in the middle, but then calyx-lobes pointed. Fruit jointed or dehiscent. 304 304. Connective of the stamens produced in a gland, a point, or a tuft of hairs. Calyx-teeth subequal. Keel gibbous or spurred on each side. Ovary sessile or nearly so. Fruit transversely septate. Shrubs with appressed hairs fixed by the middle. Bracteoles none. (See 215.) =Indigofera= L. Connective without an appendage. 305 305. Standard with two auricles at the base. 306 Standard without an appendage at the base. 308 306. Calyx-teeth blunt, nearly equal. Corolla usually red; keel beaked. Bracteoles deciduous.--Species 6. Madagascar and Mascarenes. =Strongylodon= Vog. Calyx-teeth pointed, unequal, the upper united high up. Corolla yellow; keel blunt. Bracteoles none. 307 307. Standard oblong or ovate; keel longer than the wings. Ovary and base of the style hairy. Style thread-shaped. Ovules 2.--Species 1. Madagascar. =Baukea= Vatke Standard orbicular; keel somewhat shorter than the wings. Ovary and base of style glabrous or downy. Style thickened in the middle and at the apex. Ovules numerous.--Species 1 (_C. indicus_ Spreng., pigeon-pea). Tropics, also cultivated. Yields edible, pea-like fruits and seeds, medicaments, fodder, food for silkworms, and manure. =Cajanus= DC. 308. Style bearded above. Upper calyx-teeth almost entirely united. Wings adhering to the shorter and pointed keel. Fruit not jointed. Bracteoles persistent. (See 274.) =Clitoria= L. Style glabrous. 309 309. Fruit separating into joints, when ripe. Flowers usually small. Wings adhering to the keel. (See 231.) =Desmodium= Desv. Fruit not jointed. Flowers large. Wings much shorter than the standard, sometimes wanting. Ovary stalked.--Species 20. Tropical and South Africa. Several species yield wood, vegetables, and medicaments, or serve as ornamental plants. =Erythrina= L. 310. (264.) Uppermost stamen united with the others from the base. 311 Uppermost stamen free from the others, at least at the base. 314 311. Ovule 1. Fruit ovate, not jointed, indehiscent. Gland-dotted plants. Bracteoles absent. (See 153.) =Psoralea= L.