PART III. | THE MECHANISMS OF FLOWERS. 199 
outer surface of the calyx. He found that bees obtained this 
honey in the following manner: they alighted on the flowers in 
the usual way, and inserted their tongues as usual beneath the 
vexillum; then, however, the proboscis came through the wide 
interspace which is left between the unusually narrow claws of the 
petals, and so reached the outer side of the calyx. The same holds 
— good of Coronilla montana, Scop, C. glauca, L., and C. minima, L. 
(244). 3 
Fia. 66.-- Hippocrepis comosa, L. 
_A.—Flower, from the side (x 4). 
B.—Ditto, from the front. 
C.—Ditto, after removal of the vexillum and the upper part of the calyx, from above (x 7). 
C'.—Part of the claw of the vexillum, from below. 
C2.—Ditto, from the side ; vp, process which closes the entrance to the honey. 
D.—The same flower (C), after removal of the ale also. 
E.—JInner view of right ala. 
¥.—Carina, from the side. - 
G.—Ditto, in section, more magnified. ; 
‘a, anthers; ca, calyx; e, pouched depression in the ala, fitting into the corresponding depres- 
sion e’ in the carina; ex, terminal orifice of carina; f, vexillum ; f’, its claw; fa, fold of ala which 
_ fits into the corresponding fold fa’ of the carina; fi, filament; fl, ala; fl’, claw of ala; o, superior 
_ free stamen ; ov, ovary ; po, pollen; s, carina; st, stigma; v, coherent filaments, 
| 115. Hippocrepis comosa, L.—This flower resembles that of 
Lotus in the way in which the pollen is pumped out (178, 360), 
_ but it is characterised by the peculiar way in which the honey is 
_ concealed. 
. The claw of the vexillum is so narrow and so much curved (A) 
_ that one can see between it and the stamens. On the under side 
