280 CAUSES OF DEGENERATIVE EVOLUTION 



tion of these leaves has gone very far, but in 

 Klugia notoniana the leaves in the corresponding 



FIG. 83. Branch of Procris laevigata. 



F'/', F"/", F'"/"'. The successive pairs of leaves in the axil of a large leaf F' 

 is a female inflorescence ; in the axil of a small leaf /" is a male inflorescence. 

 (The original drawing was made at Buitenzorg in Java by Mas Kromohardjo, a 

 Malay draughtsman.) 



position are absent. In another representative of 

 the same family (Streptocarpns monophylleia\ the 

 degeneration has gone still further ; all the leaves 



