COROLLA. 
10 1 
1st. The corolla with respect to the organs which it con- 
tains. 
The corolla when it is monopetalous supports the stamens, 
the number of which in this case always corresponds to the 
number of divisions of the limb of the corolla. When the cor- 
olla is polypetalous, the stamens are inserted upon the calyx 
or upon the receptacle ; their number is then usually double 
the number of petals ; as in the pink, which has ten stamens 
and five petals. When inserted beneath the germ or base of 
the pistil, the corolla is said to be hypo-gynous , (underneath the 
style or inferior :) as in the stramonium. When it is inserted 
into the calyx and surrounds the germ as in the currant, it is 
said to peri-gynons, (around the style or enveloping it.) When 
the corolla is inserted upon the germ as in the trumpet-honey- 
suckle, it is said to be epi-gynous, (upon the germ, or superior.) 
2nd. The corolla , with respect to the branches which support 
it. 
The disposition of flowers upon their branches is analogous to 
that of the leaves ; thus the flowers are either radical , coming 
from the root, or cauline coming from the stem ; they are pe- 
duncled or sessile, solitary, scattered or opposite, alternate or 
axillary . They grow in whorls , fascicles, or heads. Some- 
times they are unilateral, growing on one side of the branch, 
and sometimes fixed equally upon all parts of the peduncle and 
pointing in different directions. 
3d. The corolla with respect to the flowers which surround it, 
or which grow on the same peduncle. 
The different modes of division of the common peduncle 
into lesser peduncles or supports, cause a great difference in the 
appearance and situation of flowers, and appear under a variety 
ol forms. The green part which comes from the stem and sup- 
ports the flower, is called the peduncle ; sometimes it is called 
the foot stalk of the flower of fruit. The divisions of the pe- 
duncle are called pedicels. 
When the plant is one flowered, the flower is usually inserted 
at the end of the stem, the peduncle in that case is scarcely dis- 
tinct from the stem. 
The most common kinds of inflorescence are as follows ; 
1st. Whorl, verticillus, an assemblage of flowers surrounding the 
stem or its branches, constitutes a whorl or ring ; this is 
seen in the mint and many of the labiate plants. Flowers 
which grow in this manner are said to be verticillate from 
1st. Corolla with respect to the organs which it contains — 2d. Branches 
which support the corolla — 3d. Flowers which surround the corolla — Differ- 
ent kinds of inflorescence — Whorl — 
9 * 
