250 105- LEGUMINOSAE 



membranous or thin-lcathcry. Seeds transverse, ovoid, exalbuminous. 

 — Species 3. South Africa and southern Central Africa [Melano- 



sticta DC.) Hoffmannseggia Cav. 



Stem woody throughout, shrub- or tree-hke 42 



42. Flowers sessile, in elongate panicled spikes. Calyx 5-cleft, with semiorbi- 



cular lobes. Petals 5, equal, oblong, much exceeding the calyx. Stamens 

 10, unequal. Anthers basifixed. Ovules 2 — 3. Trees. — Species i. 



West Africa (Cameroons) Stachyothyrsus Harms 



Flowers more or less stalked, in racemes or panicles 43 



43. Flowers polygamous. Calyx slightly imbricate in bud. Petals 3 — 5. 



subequal, white or greenish. Stamens 6 — 10. Seeds transverse, albu- 

 minous. Trees. Leaves without stipules. — Species 2, one a native of 

 Central Africa, the other naturalized in North Africa. Used as hedge- 

 plants and yielding timber Gleditschia L 



Flowers hermaphrodite. Stamens 10 44 



44. Petal I, greenish-yellow. Calyx valvate in bud. Ovules very numerous. 



Styles long. Trees. — Species i. Madagascar. . . Aprevalia Baill. 

 Petals 5 45 



45. Sepals united high up, excepting one, valvate in bud. Petals imequal, 



red. Ovules numerous. Fruit straight, turgid, dehiscing by two 



valves. Seeds transverse. Trees. Bracts coloured. — Species i. 



Madagascar. Used as an ornamental plant. . . . Colvillea Boj. 



Sepals free above the receptacle 46 



46. Sepals valvate in bud. Petals j^ellow or red. Ovules numerous. Style 



thread-shaped. Fruit dehiscing by two valves. Seeds transverse, 

 oblong, albuminous. Trees. Stipules indistinct. Flowers large. — 

 Species 3. Tropics : also cultivated in various regions. Ornamental 



plants. " Flame-tree." Poinciana L. 



Sepals imbricate in bud. Seeds exalbuminous 47 



47. Ovule I, very rarely ovules 2. Seed i, placed lengthwise. Fruit winged 



at the top, indehiscent. Petals subequal, white or yellow. Spinous 

 climbing shrubs. Flowers small. — Species i. Abyssinia. {Ca>ituffa 



Gmel.). . Pterolobium R.Br. 



Ovules 2 or more. Seeds placed transversely 48 



48. Fruit woody, not winged, 2-seeded, opening by two valves. Ovary short- 



stalked, 2-ovuled. Stigma peltate. Stamens hairy at the base. Petals 

 imequal. Receptacle oblique. — Species 2. German East Africa. 



(Under Peltophorum Vog.) Bussea Harms 



Fruit membranous or leathery 49 



49. Fruit winged at both sutures, indehiscent. Stigma broad-peltate. Fila- 



ments hairy at tlie base. Petals subequal, yellow. Trees. — Species i. 



Central Africa and northern Soutli Africa. . . . Peltophorum Vog. 



Fruit winged at one suture only or not winged. Stigma small, sometimes 



concave =>o 



