AMONG THE WILD FLOWERS. 33 
there is no corolla ; and when one or other of 
these cases occurs, the term Perianth is fre- 
quently used to describe the part of the flower 
which encloses the stamens and pistils. C/e- 
matis and Anemone have no corolla; but what 
we call the flower is, in them, a coloured 
calyx; the perianth of the Tulip is at first 
green; afterwards it assumes its gay and 
varied hues. Separate parts of a corolla are 
called Petals; those of a calyx, Sepals. 
Caltha Palustris, Marsh Marigold, has no 
petals, but brilliant yellow sepals. 
