Cassia is very remarkable for the great similarity of the 
_ flowers of its countless species, and the singular diversity 
that is found in their organic structure. Of this species, 
the three longer filaments fall off detached when the flower 
withers ; two of the sterile filaments are grouped with two — 
_ of the others, and one sterile filament with the remaining 
two ; the groups continuing firmly connected by their bases 
after they have fallen from the plant. We have named the 
species, which is, perhaps, the most beautiful of the genus, 
from the singularmanner in which the pair of flowers appear 
to shrink from each other, by the incurvation of the petals’ 
that come in contact. W. H. 
