THE FLOWER. 
101 
have found one which is, definition and all, like the 
corolla yon are studying, use its name in the schedule 
description. 
Kinds of Corolla and Perianth 0 
A PolypetAlous Corolla has its petals distinct 
and separate from each other, so that each one can be 
pulled off without disturbing the others, Fig. 158. 
Fig. 158. 
Polypetalous Corolla. 
Fig. 159. 
Gamopetalous Corolla. 
A Gamopet'alous Corolla has its petals more or 
less grown together by their edges, so that if you 
pull one the whole corolla comes off, Fig. 159. 
A Regular Calyx, Corolla, or Perianth, has 
all its parts of the same size and shape, Fig. 160. 
An Irregular Calyx, Corolla, or Perianth, has 
some of its parts unlike the others in size or form, 
Fig. 161. 
Observe first whether the sepals of a calyx, the 
petals of a corolla, or the leaves of a perianth, are 
grown together or not. Sometimes they are so slight¬ 
ly united that you must look closely to find it out. 
Be cautious about calling a corolla polypetalous until 
