( 54 ) 
c The boat-shaped muricated seed, without 
down. 
d A barren seed, from one of the central 
flow r ers. 
e A fertile floscule from the ray. 
f A barren floscule from the disk. 
N. B. This serves to explain the order Poly- 
gamia Necessaria in the class Syn- 
genesia. 
