5 
THE DIFFERENT KINDS OF COROLLAS. 
SYNTHESIS. 
BESIDES the guardianship of a Calyx, many flowers 
have also their Corolla, which has a similar office, and 
it is not improbable, that these expansions have likewise 
a reference to the solar rays, which these parts either 
increase by a reflective power, or ward off from the cen- 
tral organs ; hence the advantages of the variety in their 
shapes and colours. 
However apparently varied, the Forms of this part of 
the flower are circumscribed. Thus — 
The term Corolla is a compound idea, made up of 
the following distinct notions, as — 
I. Bell-shaped {Campanula to) ^ hollowed inter- 
nally like a bell, often swollen at the sides^ and 
without a tube. 
IL Wheel-shaped (Rotaia), slightly hollow, or the 
border flat, and with so little a tube as to resemble 
a wheel on the ground. 
III, Funnel-shaped (liifundibuliformis), having 
the border of the Corolla like a cone, and placed 
upon a tube, so as £o resemble a funnel. 
IV. Salver-shaped (Hi/pocraferiformis), h'dving the 
border of the Corolla flat, and placed upon a 
tube resembling a salver. 
