CLASSIFICATION 175 
Fruit.—A Legume. 
(2) Caesalpineae.—F lowers zygomorphic, stamens 10 
or fewer, free. : 
Plants in this division are mostly trees with pinnate 
or even simple leaves and large showy flowers. The 
best known genera found in South Africa are Poinciana 
(the Flamboyante tree of Natal), Cassia, Schotia (Boer- 
boom), and Bauhinia. Several species of Cassia yield 
the drug Senna. 
Type.—Cassia (fig. 97). 
Plant.—A tree. 
Leaves.—Compound, paripinnate, alternate, stipulate. 
Leaflets.—Obovate, entire, net-veined, unicostate. 
Inflorescence.—Racemose. 
Flower.—Zygomorphic, complete, conspicuous, dia- 
meter about 14 inches. 
Calyx.—, polysepalous, inferior. 
Corolla,—, polypetalous, perigynous, yellow. 
Androectum.—10, free. The three lower stamens are 
longer than the others and project outwards, in some 
flowers to the right and in others to the left. The 3 
upper stamens are reduced to staminodes. Anthers 
dehisce by pores. 
Gynoecitwm.—Monocarpellary, superior. 
Ovary one-celled, placentation marginal, ovules 
numerous. 
Fruit—A legume, often with septa between the 
seeds. 
Pollination.—This is a “pollen flower” (q.v.) and 
contains no honey. It seems probable that insects eat 
the pollen of the short stamens (the 4 upper ones) and 
