PART 111. ] THE MECHANISMS OF FLOWERS. © 115 
which is yellowish during the time of flowering and orange-red 
afterwards. It serves'as a guide towards the honey, which is 
secreted and lodged upon the smooth green posterior surface. 
. The expanded claws of the upper and middle petals lie close 
to the hinder surface of this plate and surround its upper and 
dies 
, 
Ih Xx fy, 
A> 
4) 
ree 
{ \ Ht 
Wid lt 
| Ms 
Fie. 35,—Reseda odorata, L. 
| - 1.—Flower before the anthers have dehisced, seen from the front. 
__2.—Ditto after some of the anthers have dehiseed. 
_ 8.—Young fruit in side view. 
_ 4.—Left superior petal. 
_  §.—Left lateral ditto. 
_ 6.—Left inferior ditto. 
_ _ a, sepal; b, petal; c, expanded claws of the superior and lateral petals, which surround the 
) Shield-shaped swelling of the dise (hk); d, anther bent downwards, not yet dehisced; e, anther 
ehiscing and rising up; jf, anther dehisced and erect; g, pistil; h, shield-shaped swelling of the 
ise ; i, nectary and honey. 
teral borders with their anteriorly directed lobes, thus pro- 
scting the honey effectually both from rain and from useless 
visitors (flies). The lamin of these petals, which are split into 
white, radiating, club-shaped strips, assist the red anthers in 
3 I 2 
