392 FLORA OF MADRAS. \_Cassieae. 



Tribe X. CAS8IEAE. Leaves simply pinnate ; calyx-lobes usually 



free to the base : 



Petals 5 ; stamens 10, sometimes some reduced to staminodes ; 

 anthers usually dehiscing by a terminal pore; leaves abruptly 



pinnate 67 . Cassia. 



Petals ; stamens 2, anthers dehiscing longitudinally ; leaves 

 imparipinnate 68. Dialium. 



Tribe XI. BAUHINIEAE. Leaves of 2 leaflets, usually joined together 



for a portion of their length, sometimes free ; calyx gamosepalous : 



Petals unequal, erect or patent ; stamens 10, sometimes reduced to 



3 or even 1, the rest usually sterile 69. Bauhinia. 



Tribe XII. AMHERSTIEAE. Leaves usually abruptly pinnate; 

 calyx-lobes free to the disk, usually imbricate ; ovary 3-many-ovuled, 

 the ovary stalk adnate to the disk : 



Petals wanting; stamens 3-9 ; calyx-lobes 4 70. Saraca. 



Petals 3-5 . 



Stamens monadelphous, only 3 developed ; leaflets many 



71. Tamarindus. 

 Stamens 5, free, equal, alternating with 5 staminodes 



72. Humboldtia. 



Tribe XIII. CYNOMETREAE. - Leaves abruptly pinnate, 2-many- 

 foliolate ; calyx-lobes free to the disk, imbricate or valvate ; ovary 

 1-2 ovuled ; seed 1 : 

 Petals wanting : 



Leaflets 1 pair ; stigma large, peltate ; pod samaroid below 



73. Hardwickia. 

 Leaflets 4-7 ; stigma minute ; pod thickened below 



74. Kingiodendron. 

 Petals 5; leaflets 1-3 pairs; stigma capitate 75. Cynometra 



60. Caesalpinia, Linn. 



Trees or shrubs or climbers, armed or unarmed. Leaves 

 abruptly bipinuate ; pinnae abruptly pinnate ; leaflets many 

 small or fewer and larger ; stipules various ; stipels or converted 

 into thorns. Flowers often showy, yellow or red, in axillary or 

 terminal racemes or panicles ; bracts caducous ; bracteoles 0. 

 Calyx of 5 sepals, connate at base in a disk-lined tube ; the lowest 

 sepal concave outermost. Petals 5, orbicular or oblong, clawed, 

 the uppermost smallest. Stamens 10, free, declinate ; anthers 

 uniform. Ovary sessile, few-ovuled ; style filiform ; stigma ter- 



