THE FLOWER 215 
Observe how the end of the style is bent over so as to bring 
the stigma uppermost when the petals are depressed. Imag- 
ine the legs of a bee or a butterfly resting there as he probed 
for honey; with what organ would his body first come in 
contact when he alighted? If his thorax and abdomen had 
previously become dusted with pollen when visiting another 
flower, where would the pollen be deposited? Do you notice. 
anything in the color, shape, or odor of this flower that would 
be likely to attract insects? Have you ever observed insects 
Fies. 318-322. — Dissection of » papilionaceous flower: 318, front view of a 
corolla; 319, the petals displayed: v, vexillum, or standard; w, wings; k, keel ; 
320, side view with all except one of the lower petals removed, showing the essential 
organs protected in the keel: J, loose stamen; st, stamen tube; 321, side view, 
showing how the anthers protrude when the keel is depressed ; 322, ground plan. 
(After GRAY.) 
hovering around flowers of this kind; for example, in clover 
and pea fields, and about locust trees and wistaria vines? 
What kind of insects, chiefly, have you seen about them? 
Remove the sepals and petals from one side, and sketch 
the flower in longitudinal section, showing the position of the 
pistil and stamens. Then remove all the petals, and spread 
in their natural order on the table before you, and sketch as 
they lie (Fig. 319). Label the large, round upper one, 
standard or vexillum; the smaller pair on each side, wings, 
and the two more or less coherent ones in which the pistil 
and stamens are contained, keel. 
239. The stamens.— Count the stamens, and notice 
how they are united into two sets of nine and one. Stamens 
