NEGLECTED GENERIC TYPES. 211 
distinct rows. The filaments are excessively elongated and 
tortuous; and the torus of the flower is glandless; that in 
all other Cleome allies exhibiting one or more large nectary- 
like glands. 
The genus must be considered monotypic. 
C. PLATYCARPA. Cleome platycarpa, Torr. Bot. Wilkes 
Exped. 235, t. 2. 
CARSONIA. 
I assign this name to the most remarkably distinet of all 
those diverse types that have been negligently referred to 
Cleome; the desert plant which Mr. Watson named C. spar- 
sifolia. Itis totally a thing apart from all near allies of 
Cleome even as to its inflorescence; for, instead of being 
gathered into long and dense racemes, the flowers are 
largely solitary, that is, scattered all over the bushy plant, 
one in a place at the end of each short leafy branchlet; 
though the main branches bear at their ends from three to 
a half-dozen loosely collected in what may be called a short 
raceme or subumbellate cluster. The calyx is chorisepa- 
lous, though in a way most unlike what is seen in either 
Cleome or Celome; for the sepals are broad and short, and do 
not at all spread away from the petals. The petals have the 
posture of those of Peritoma, not of Cleome, but they have a dis- 
tinct 2-lobed nectariferous scale at base, nothing like which is 
otherwise known among our capparids. The stamens in 
this type are also exceedingly characteristie, being short, 
stiff and straight, the whole stamens scarcely equalling the 
petals in length, whereas in all allied genera the filaments are 
slender, and so elongated as to be protruded far beyond the 
petals, Not many genera in this or any other choripetalous 
allianee are established upon so many and such strong 
characters. 
