NEPTUNIA GRACILIS. 



Bentham in Hooker's Journal of Botany iv. 355 (1842). 



1, transverse section of a tuber. 



2, portions of leaves. 



3, head of unexpanded flowers. 



4, bracts. 



5, flower-buds. 



6, unexpanded flower. 



7, expanded sterile flower. 



8, expanded fertile flower, staminate only. 



9, expanded perfect flower. 



10, staminate flower, laid open. 



1 1 , back- and front-view of a stamen. 



12, pollen-grains. 



13, pistil. 



14, lower portion of fruit-valve with seeds. 



15, a seed separated. 



1 6, transverse section of a seed. 



17 and 1 8, longitudinal sections of seeds. 

 All enlarged, but to various extent. 



