FLORA NIGRITIANA. 467 
of the Quorra, at Addanda, Vogel, who states the flowers to be 
purplish-white ; Senegal and Guinea. 
7. Ipomea capitata, Chois. in DC. Prod. 9. p. 365.—Cape 
Palmas, Vogel; Accra, Ansell; throughout Tropical Africa, 
and closely allied to the E. Indian J. capitellata and the 
American T. tamnifolia. 
8. Ipomoa sessiliflora, Roth.—Chois. in DC. Prod. 9. p. 366. 
—St. Thomas, Don ; a common East African and East Indian 
species. 
9. Ipomeea sp., near the last, and with similar small flowers, but 
very hispid; the specimens nearly rotten—St. Thomas, 
Don. 
To the Capitate group Choisy refers also the Z. dichroa, 
Chois. from Senegal. 
10. Ipomeea sagittata, Desf.— Chois. in DC. Prod. 9. p. 372.— 
Accra, Don; a N. American, S. European, and N. African 
plant. 
1l. Ipomea teretistigma, B setifera, Chois. in DC. Prod. 9. 
P. 873 ?—Sierra Leone, Don; Senegambia, Heudelot. 
3 This plant, which I am not quite certain of having correctly 
identified with Choisy's J. teretistigma, from Guinea, is remark- 
able for the very strong prominent nerves of the calyx. The 
capsules and seeds are both smooth in Don’s specimen, which 
has no flowers. Heudelot’s has a single flower, which I was 
unable to examine. 
12. Ipomoea wmbellata, Mey.—Chois. in DC. Prod. 9. p. 877.— 
I. primuleflora, G. Don, Gard. Dict. 4. p. 270.—Sierra 
Leone, Don; Fernando Po, Vogel; a common American 
plant, distinguished from the Asiatic J. cymosa almost exclu- 
sively by its corolla, yellow, not white. e 
13. Ipomæa Baclei, Chois. in DC. Prod. 9. p. 881.—1. riparia, 
G. Don, Gard. Dict. 4. p. 265.—Flowers purple, whitish 
inside.— Fernando Po, on the sea coast, Vogel; St. Thomas, 
Don; Senegal. 
These specimens agree perfectly with Choisy's ebaracter and 
figure. The Z. Lindleyi, Chois. from Madagascar, must be very 
near it. ^ 
HH2 
