* 369, 
98 THE COROLLA. 
as in Wall-flower (Cheiranthus Cheiri.) See Fig. 26, par. 
352. The calyx in compound flowers (Composite), con- 
sists of a mere rim at the top of the ovary, or of hairs (called 
pappus) rising from the same part. 
353. The calyx is called superior when it adheres to 
ovary (447), i in which case it is necessarily monosepalous, 
every point in the circumference of the ovary is in con 
with a part of the calyx ; and the-ovary is called adherent 
inferior. When there is no adhesion, the calyx is inferior, 
or inserted below the atey; which is called free or su 
The terms “ superior” and “ inferior,” as applied to the ¥ 
rious parts of the = are explained in par. 418, 419, 420, 
also 447, 448. 
VIII. THE COROLLA. 
354. This is the inner whorl of leaves when the perianth 
is double, placed immediately next the sexual organs, ofa 
delicate texture, and generally highly coloured, forming the 
chief beauty of the flower. See c. Fig. 12, par. 286. The 
- eorolla seems to consist chiefly of cellular tissue, and spiral 
_yessels, with no woody fibre. It exists only when the 
rianth is double, the single envelope always receiving 
name of calyx. In some cases there is a little difficulty ™ 
finding if the perianth be double or single, as in some mon 
cotyledons, where the floral envelope consists of six 
leaves, in which an outer and inner whorl can scarcel¥ be 
distinguished. In such cases, however, some botanists 
of calyx and corolla, considering as calyx the three leaves 
355. The individual parts or divisions of which the co 
_ consists are called petals. | When these are united by 
_ margins, so as to form one leaf, or petal, of a more or I 
se (Prima), ——- Digitalis). ~ =_— 
