468 FLORA NIGRITIANA. 
The I. ochracea, Don, from the Gold Coast, J. Owariensis, 
Beauv., from Oware, J. Afra, Chois., from Guinea, and J. Ro- 
geri, Chois., and J. zebrina, Perr., both from Senegal, are 
unknown to me. 
14. Ipomæa palmata, Forsk., Chois. in DC. Prod. 9. p. 386.— 
Senegal to the Niger and Fernando Po, Vogel, Don and 
others; also in East Africa. : 
The J. vesiculosa, Beauv., appears to be the same species, vith 
some accidental deformity of the epidermis. 
15. Ipomea ennealoba, Beauv.— Chois. in DC. Prod. 9. p. 888. 
—Sierra Leone, Vogel; Oware. 
The 7. Coptica, Roth, an East African and East Indian plant, 
extends also into Senegal. 
16. Ipomeea sinuata, Ort.—Chois. in DC. Prod. 9. p. 362.— 
Fernando Po, Vogel; a common American plant, from the 
Southern United States to Brazil. 
These Afriean specimens belong to some of the larger forms 
included by Choisy within the limits of the species. The 
peduncles, as in some of the Brazilian specimens, are often much 
longer than the petioles, with from three to seven or eight white 
flowers, the corolla half as long again as the calyx. The pecu- 
liar anthers of this and some allied species, would surely justify 
their separation into a distinct section. 
The two remaining Ipomee, cited as West African, I. Sene- 
gambia, Chois., from Senegal, and I. Afzelii, Chois., from 
Sierra Leone, must both be very near Breweria secunda, de- 
scribed below. 
There is no genuine species of Convolvulus described from 
W. Tropical Africa; and the only one known to me is a Sene- 
gambian plant, in Heudelot's collection, which is eitber a long- 
leaved luxuriant variety of, or a new species allied to, the EgyP- 
tian and Nubian C. microphyllus, Sieb. 
l. Aniseia uniflora, Chois. in DC. Prod. 9. p. 431.—Ipome@ 
lanceolata, G. Don, Gard. Dict. 4. p. 282.—Sierra Leone, 
Don ; Madagascar and East India. ; 
1. Hewittia bicolor, Wight et Arn.—Shutereia bicolor, Chots- 
in DC. Prod. 9. p. 435—Aniseia Afzelii, G. Don, Gard. 
