FLOWERS 
in which each flower has a flower-stalk. In a racemose panicle 
each branch is practically a raceme. A corymb is a flattened 
cluster in which the outer flowers bloom first. A cyme is a 
flattened cluster in which the central flowers bloom first. 
The Shape of the Flower 
A papilionaceous flower is one bearing a certain resemblance 
to a butterfly, as the blossom of the pea or bean (see Pulse 
Family, page xxi). 
The calyx is the cup-like part which holds the rest of the 
flower ; it may be made up of separate sepals or otherwise formed, 
and is generally green. The corolla is the part of the flower 
DIAGRAM OF A P LOWER 
which generally gives the color ; it may be made up of separate 
petals (polypetalous), or may be tubular, bell-shaped, urn- 
shaped, or otherwise, through the fusing of the petals (gamo- 
petalous), as in Lily-of -the- Valley. The pistil generally arises 
from the centre of the flower, and is surrounded by stamens 
(Fig. 24). The stamen is the pollen-bearing organ, and consists 
of a stalk (filament) and a pollen-bearing sac (anther). The 
pistil is the pollen-receiving and seed-bearing organ, and is 
really made up of a stalk (style) and end-organ (stigma) and 
the ovary below, in which the seeds are formed. In common 
parlance the name pistil is applied to its visible part. 
