350 BOTANICAL GAZETTE | NOVEMBER 
back upon itself. Stamens triadelphous, one, two, and seven. 
(fig. 79.) 
Case 22. Vexillum with margins turned backward and 
coalesced, forming a funnel which was adherent to the calyx 
tube at the base. Stamens two free, nine normally united, with 
a twelfth united for two-thirds of its length. This filament was 
slightly enlarged and colored, and had its anther converted into 
a body of the same color and texture as the petals. (figs. 20, 21.) 
Case 23. Vexilla two, the second shaped like half the first 
and balanced on the other side by a petaloid stamen having a 
yellow spot, corresponding to an anther, on the inner margin. 
Other stamens normal, nine united and one free, the free stamen 
arising between the two petaloid bodies within the normal vexil- 
lum. (fig. 22.) 
Case 24. Vexillum doubled upon itself on both sides. Alae 
two on each side, the supernumerary alae having the hooks on 
the lower side, z.¢., toward the normal alae, in this respect 
appearing as a reflection of them. One of these supernumerary 
alae occupied the position of a free stamen. Stamens nine 
united, two free. (Fig. 23.) 
Case 25. Vexilla two, the first notched to one side of the 
center, the second with a large lateral lobe, and having one 
margin enclosed in the carina. The enclosed margin of the 
second vexillum bore a small appendage which was nearly spiral 
below and ended above in an erect wing. This appendage was 
probably the homologue of an anther. (Fig. 24.) 
Case 26. Vexilla two, the outer joined below, margin to 
margin, with one ala. 
Case 27. One ala joined to the first vexillum, this double 
petal external. Second vexillum of normal form, but with one 
margin included in the carina. Upper stamen free (as normal), 
beside it a broad filament with a lateral overlapping hook and 
colored like a petal. This broad filament was topped with an 
anther and had a normal filament branching from it at a point 
two-thirds of its length from the base. The remaining stamens 
were united into a split tube bearing upon its outer margin four 
