BEES AND FLOWERS. 
229 
hollow or depression d, and if you look inside the 
" wings " you will notice a little knob that fits into 
this hollow, and so locks the two together. We shall 
see by-^nd-by that this is important 
Fig. 62. 
stu 
L--A 
Lotus corniculatus, Bird's-foot Trefoil. 
I. Full flower : sta, Standard ; w, Wings ; k, Keel. 2. Keel o4 
flower: d, Depression into which wings fit. 3. Interior of flower: 
s, Stigma ; /, Pollen ; a, Anthers ; h, Place where honey lies. 
Next let us look at the half-flower when it is cut 
open, and see what there is inside. There are ten 
stamens in all, enclosed with the stigma in the keel ; 
nine are joined together and one is by itself. The 
anthers of five of these stamens burst open while the 
flower is still a bud, but the oj:her stamens go on grow- 
ing, and push the pollen-dust, which is very moist 
