222 
STUDY OF BOTANY. 
Aggregate flowers are primarily divisible into seven kinds, viz. 
1 Aggregate 3 Umbellata 5 Amentaceous 
2 Compound 4 Cymose 6 Glumose 
7 Spadiceous. 
All of which shall be explained in their turns. 
1. Aggregate, properly so called, has a receptacle that is dilate 
(extended in breadth) the florets standing on peduncles, (footstalks) 
as in Scabiosa. 
2. Compound, an aggregate flower comprehending many florets 
that are sessile or without peduncles on a common receptacle that 
is entire, and having also a common perianthium, but furnished 
with anthera that grow together in the form of a cylinder, their pro¬ 
perties are, 
a A common receptacle enlarged and undivided. 
b A common perianthium surrounding all the florets. 
c The flowers monopetalous and sessile. 
d The anthera of each floret, five in number, and growing toge¬ 
ther in a cylinder. 
e A monospermous germen under each of the florets. 
Compound flowers are of three kinds, viz. 
a Ligulate, when all the corrollulae (little corolla) of the florets are 
plane, flat, shaped like a ligula, or narrow tongue, or fillet, and ex¬ 
panded towards the outer side. 
b Tubulose, when all the corollulae of the florets are tubulose, and 
nearly equal. 
c Radiate, having rays, when the corollulse of the disk (middle 
part) are tubulose, and those of the circumference (margin) of ano¬ 
ther form. 
3. Umbellata, consisting of many florets, placed on a receptacle, 
on fastigate peduncles, that are all produced from the same point. 
They are told by the following properties, viz. 
a A common receptacle divided into peduncles, whether the umbel 
be plain, flat, convex, rounding, concave, or hollow. 
b A germen under the corolla. 
c Five distinct stamina that are deciduous. 
d A bifid stigma. 
e Two seeds joined at their summits. 
A Radiate umbel is when the marginal petals are longer than 
those of the disk. 
4. Cymose, consisting of many florets placed upon a receptacle, 
upon fastigiate peduncles, the primary ones of which issue from the 
same centre as in an umbel, but the secondary, or partial ones lie 
dispersed without order. 
