( 86 ) 
times the border of the corol is wanting, and 
fometimes there is not even a tube. On the 
variety of form in the corol is founded, in 
part, the generic character. On the florets 
bearing ftamens or piftils, or both, are founded 
the firft four orders. If all the florets of a 
compound flower are found to contain fta- 
mens and piftils, it muft then be referred to 
the firft order : if fome of it's florets contain 
ftamens and piftils, and others only piftils, you 
muft look for your flower in the fecond order: 
to the third it will belong if the florets in the 
centre have both ftamens and piftils ; and if 
thofe in the circumference be deftitute of 
either. The fourth order depends alfo on 
the florets in the centre having both ftamens 
and piftils ; but from fome defecl; in the 
piftils, producing no feed, the florets in the 
circumference having only piftils, and produc- 
ing feed. The fifth order is not diftinguilhed 
by any circumftance belonging to the ftamens 
and piftils, but is marked by the florets being 
feparated from each other, and being en- 
clofed in a partial calyx, all the florets being 
contained in a common one, fo as to form 
one flower. The character of the fixth order 
is derived from the form of it's flowers being 
fimple. 
