FORM AND STRUCTURE 
that a number of pistils are 
found entirely separate; as a 
rule they grow together and the 
parts unite or coalesce. 
A single pistil consists of 
ovary, style and stigma. The 
Ovary is a hollow case which 
contains the ovules; the Stig- 
ma is the upper part, usually Fic. 36-—Half a Cherry Blossom Show: 
flattened, which is covered by a a pe 
an adhesive secretion and which receives the pollen ; the 
Style connects the ovary and the stigma. It may be want- 
ing, the stigma is then said to be sessile. (Fig. 36.) 
The Ovules are tiny sac-like bodies which after they receive 
the protoplasm of the pollen develop into seeds. 
INFLORESCENCE. 
Inflorescence is a term used to denote the 
arrangement of the flowers on the stem. 
Flowers may occur singly or in clusters ; 
they may be terminal or axillary. 
Peduncele, is the stem of a solitary flower or 
of a flower cluster. 
Pedicel, is the individual stem of each flower 
in a cluster. 
Bract, is a small leaf found on a flower stem. 
Involucre, is a collection of bracts around a 
flower cluster or around a single flower. 
FLOWER CLUSTERS. 
Raceme, is a cluster in which the flowers are 
arranged along the central axis upon 
pedicels nearly equal in length, those 
nearest the base blooming first (Fig. 
37). The central axis is called a rachis, 
When the pedicels divide and subdivide 
the raceme becomes a Panicle. When 
a panicle stiffens and becomes rigid and 
Sig. 37. — Raceme of 
Barberry Blossoms. 
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