158 ESSENTIALS OF BOTANY 
diagram of the Iris family (Fig. 116, III) the three dots 
inside the flower indicate the position of a second circle 
of stamens, found in most flowers of monocotyledons, but 
not found in this family. 
. 
187. Review Summary of Chapter XV. 
The organs of the flower and their arrangement.1 
1. 
Kinds of flower as regardssymmetry- . . . . . {a 
3. 
The receptacle. 
appearance of circles. 
The perianth . {sonar union of sepals. 
apparent union of petals. 
, 7 1. 
fmm da 
The stamens . : 3. 
real union. 
| apparent union. 
The carpel. 
1. 
fms dB 
The pistil . .< | om Bi 
“ | simple pistil. 
| compound pistil. 
1. 
(types of placenta . . . . .. {2 
The ovary. . < rs 
| positions relative to other circles . {2 
3. 
1 Illustrate by sketches when possible. 
