340 THE JOURNAL OF BOTANY 
with well-defined clasping surface. Stigmatic chambers narrow in 
section. 
Tenaris chlorantha Schlechter (1121).— Habit erect. Sepals 
small. Petals long, strap-shaped, brown-purple in colour. Cuculli 
simple, continued up over stylar head, swollen and glandular at 
their tips. The pollinia almost globular in shape, and lying freely 
exposed in shallow pits at the top of the column, portions of the 
stylar head appearing between them. The corpusculum inferior. 
Stigmatic valves small, with tubular trumpet-lipped orifice below. 
The detached leg of an insect found imprisoned in one specimen 
exam 
ined, 
Asclepias cultriformis Schlechter (1126).—Petals green. Cuculli 
d with 
but as the flowers mature the branches lift themselves up so that 
The retinacula show much variation in different 
ies—adaptations, as it would seem, to different insects. 1Dey 
are frequently kneed, but the point at which the bend occurs differs 
largely in different species. They are variously twisted and 
h 
pollinia are approximated, this doubtless giving surer hold. The 
pollen-mass may be flattened in only a portion of its extent, and 
