162 NATURAL HISTORY OF PLANTS. 
GENERA. 
I. CADIEA. 
1. Cadia Forsx.—Flowers hermaphrodite regular ; receptacle 
broadly cupuliform or campanulate, lined by a disk with 10-crenu- 
late margin. Calyx perigynous 5-partite; sepals valvate-subre- 
duplicate in estivation. Petals 5, equal alternisepalous free, oblong- 
obovate or suborbicular, shortly unguiculate, contorted or variably 
imbricated ; highest petal sometimes innermost, sometimes outer- 
most. Stamens 10, perigynous, 5 oppositipetalous shorter, 5 alterni- 
petalous ; filaments free; anthers introrse 2-celled, dehiscing longi- 
tudinally, finally versatile. Germen central free stipitate ; ovules oo, 
2-seriate parietal descending: micropyle superior extrorse; style 
short curved; stigma small terminal. Legume linear acuminate 
plano-compressed coriaceous, continuous within, o-seeded, 2-valved. 
Seeds unequally-ovate compressed exarillate ; embryo exalbuminous 
fleshy ; radicle superior inflexed accumbent.—Unarmed shrubs ; 
leaves alternate imparipinnate; leaflets 0, small exstipellate ; sti- 
pules 2, small lateral; flowers rather large, solitary or in few- 
flowered pendulous lateral racemes, axillary or terminal (astern 
tropical Africa, and adjoining islands). See p. 69. 
II. EUCASALPINIEA. 
2. Cesalpinia PLtum.—Flowers hermaphrodite, more or less 
irregular ; receptacle evenly or unevenly cupuliform, lined by a disk. 
Calyx 5-partite ; sepals unequal; estivation imbricate (lowest sepal 
enveloping 2 lateral and often larger cymbiform), or much more 
rarely subvalvate or valvate (Jelanosticta). Petals 5, free, unequal, 
much imbricated; highest petal larger or smaller, innermost in 
estivation. Stamens 10, perigynous free declinate; filaments 
glandular or villous at base; anthers uniform introrse 2-celled, 
dehiscing longitudinally. Germen subsessile free at bottom of 
receptacle ; style terete; apex stigmatiferous, truncate or clavate, 
or more rarely concave or broadly peltate (Peltophorum) ; ovules few 
