162 NATURAL HISTORY OF PLANTS. 



GENERA. 



I. CADIE^. 



1. Cadia Forsk. — 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 aestivation. 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 go, 

 2-seriate parietal descending ; micropyle superior extrorse ; style 

 short curved ; stigma small terminal. Legume linear acuminate 

 piano-compressed coriaceous, continuous within, co-seeded, 2-valved. 

 Seeds unequally-ovate compressed exarillate ; embryo exalbuminous 

 fleshy ; radicle superior inflexed accumbent. — Unarmed shrubs ; 

 leaves alternate imparipinnate ; leaflets co, small exstipellate ; sti- 

 pules 2, small lateral ; flowers rather large, solitary or in few- 

 flowered pendulous lateral racemes, axillary or terminal (Eastern 

 tropical Africa, and adjoining islands). See p. 09. 



II. EUCLESALPINIE.E. 



2. Csesalpinia Plum. — Flowers hermaphrodite, more or less 

 irregular ; receptacle evenly or unevenly cupuliform, lined by a disk. 

 Calyx 5-partite ; sepals unequal ; a3stivation imbricate (lowest sepal 

 enveloping 2 lateral and often larger cymbiform), or much more 

 rarely subvalvate or valvate {Melanosticta). Petals 5, free, unequal, 

 much imbricated; highest petal larger or smaller, innermost in 

 aestivation. Stamens 10, perigynous free decimate ; filaments 

 glandular or villous at base; anthers uniform introrse 2-celled, 

 dehiscing longitudinally. Grermen subsessile free at bottom of 

 receptacle; style terete; apex stigmatiferous, truncate or clavate, 

 or more rarely concave or broadly peltate (Peltoj)honun) ; ovules few 



