FLORA NIGRITIANA. 423 
9. Borreria ramisparsa, DC. Prod. 4. p. 544.—8St. Thomas, 
Don; Senegal.—var. major multiflora.—On the Quorra, at 
Patteh, Vogel. ; 
A common Tropical Brazilian weed, with exactly the appear- 
ance of B. parviflora, but in the African, as well as in the 
American specimens, two of the calycine teeth are always very 
minute. 
1. Spermacoce Ruellie, DC. Prod. 4. p. 554.—Accra, Vogel, 
Don ; on the Quorra, Vogel, Ansell; Senegal. 
These specimens appear to combine the characters of S. 
Ruellie and S. galeopsidis, DC. The length of the teeth 
of the calyx is variable. The species is very different from any 
other I am acquainted with, and remarkable for the size of the 
capsules, 
2. Spermacoce palmetorum, DC. Prod. 4. p. 553 ?—Sierra 
Leone, Vogel. 
This agrees better with Thonning’s description of his Dividia 
scabra than with De Candolle’s character of S. palmetorum, to 
which he refers Thonning’s plant with doubt. The leaves are 
oblong-lanceolate, the calycine teeth very unequal, one or two 
of them being longer and broader than the rest. 
3. Spermacoce pilosa, DC. Prod. 4. p. 553.—Sierra Leone, 
Vogel; Guinea. 
4. Spermacoce sp., near S. phyllocephala, DC., but with broad 
leaves.—A. single imperfect specimen from Sierra Leone, 
Don. 
Three other species have been described from W. Tropical 
Africa: S. phyllocephala, DC., S. stachydea, DC., and S. che- 
locephala, DC., all from Senegal. € 
l. Mitracarpium Senegalense, DC. Prod. 4. p. 553.— Sierra 
Leone, Vogel; Accra, Don; Cape Verd Isles, Senegal, 
Guinea and Nubia. 
l. Diodia arenosa, DC. Prod. 4. p. 564 ?—Sierra Leone, Don ; 
a Brazilian species. : 
The specimen is barely in flower, and insufficient to charac- 
terize it if it be really distinct from the Brazilian plant, of which 
it has all the appearance. It is very near D. articulata, but 
