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monosepalous, because it appears to consist of one sepal only. 
The calyx is usually more or less green, but in some cases it 
is as brightly coloured as the corolla. 
Corolla. The inner whorl or whorls of the perianth, com- 
posed of petals, which like the sepals may be either free or 
united by their edges so as to fonn one tubular pièce, in which 
case it is termed monopetalous. 
2d. The stamens compose the whorl next within the peri¬ 
anth, and consist essentially of a part termed the anther, which 
is a sort of bag, containing a fine powder, the pollen. The 
anther is generally, but not always, supported upon a stalk 
which is termed the filament; but when this is wanting the 
anther is said to be sessile. 
3d. The pistils. The subordinate parts of the next or 
innermost whorl of the flower are termed carpels. These may 
either cohere together, and so constitute a compound pistil, or 
may remain free, and then each is considered as a separate 
pistil, according to the usual nomenclature, but some botanists 
consider them in the aggregate as still forming a pistil. The 
subordinate parts of each pistil, in the more usual acceptation of 
the term, are the ovarium, or portions at the base containing the 
ovules, which are destined to become seeds ; then upon this is 
seated the style, a sort of stalk which terminâtes above in a 
portion divested of the epidermis, and which is called the 
stigma. In some cases the style is wanting, and then the 
stigma is seated on the ovarium, and is termed sessile. A clear 
appréhension of these several parts of the flower is neces- 
sary for every one who wishes to comprehend a botanical 
description. 
Follicle. A bladdery seed-vessel like that of the Bladder- 
senna. 
Hastate. Shaped like the head of an ancient halberd. 
