FLORA NIGRITIANA. 9497." 
distinguish this from H. Africana. Each carpel has a broad 
semicircular wing, produced equally above, below, and out- 
wardly. 
The above are the only two extra-American representatives of 
à genus numbering no less than eighty-two species, and afford 
a striking example of the relation subsisting between the East 
American and West African Floras. 
l. Triaspis odorata, Adr. Juss. in Deless. Ic. 8. p. 91. t. 86.— 
Fernando Po, Vogel ; Guinea, Thonning. 
The 7. flabellaria, Adr. Juss., from Senegambia, concludes 
the catalogue of W. African Malpighiacee. 
XXVIII. SAPINDACE FE. 
1. Cardiospermum Halicacabum, Linn., var. hirsutum.—Fre- 
quent along the coast, from Cape Verd to the Niger River. 
2. Cardiospermum microcarpum, H.B.K. Nov. gen. et sp. 5. 
P. 104.—Senegambia ; also in Vogel’s collection, without the 
precise station, but probably as frequent as C. Halicacabum. 
A very distinct plant from the former, in the small, short, 
broadly-triangular, trigonous capsules, depressed at the top, 
although when in flower only it is difficult to distinguish it. 
Both species vary in the greater or less degree of pubescence 
of the stems, young leaves, and pods, or in their perfect smooth- 
ness, yet it is probably the C. Halicacabum that Schumacher and 
Thonning refer to as C. hirsutum, and that the C. microcar- 
pum is their C. glabrum. Both species are so widely diffused 
over Tropical America, the whole of Africa, the East Indies, and 
the islands of the Pacific, that we have no other data to deter- 
mine which is more particularly their native country, than this, 
that America is the exclusive station for all other known species 
of the genus. The C. microcarpum has been since published 
by Miguel (Linnzea, p. 18. 359), under the name of C. acumina- 
tum, and Cape-Verd specimens of it were included under C. Hali- 
cacabum in the first portion of this vol., p. 114. 
l, Paullinia pinnata, Linn.—Senegal, Sieber; Sierra Leone, 
