FLORA NIGRITIANA. 293 
Flora Senegambis, besides which the only other W. African 
species known of the tribe of Genistee, is the Xerocarpus hir- 
sutus, Guill. et Perr., from Senegal and Cordofan. 
Of the tribe of Trifoliee, no species has as yet to my know- 
ledge been found in W. Tropical Africa, although a few have 
been gathered in the eastern portion of that contment within 
the Tropies as well as in North and South Africa. 
Acantuonorus, Benth. /ndigofere sp., Auct. Char. gen. ref. 
Calyx profunde quinquefidus, laciniis lanceolato-subulatis. Pe- 
tala breve unguiculata, inter se calycique zequilonga ; vexillum 
obovatum, ale lineari-oblongze liberz, carina recta, edentula, 
segmentis fere a basi connatis. Stamina diadelpha, anthere 
late didymz, connectivo in acumen producto basi dorso piloso. 
Ovarium breviter stipitatum, lineare, obliquum, in stylum va- 
lidum uncinatum productum. Stigma subsimplex. Legumen 
indehiscens, faleatum, latiuseulum, compressum, echinatum, 
hispido-setosum, dorso bicarinatum. Semen solitarium. 
- Acanthonotus echinatus, Benth.—Indigofera echinata, Willd. 
et Auct.—Senegambia, Heudelot ; on the Quorra, at Attah, 
Vogel. 
A widely distributed plant, common to West Africa, Ceylon, 
and the Peninsula of India The leaves vary much in form, 
from broadly obovate and very blunt, to oblong and rather 
acute at both extremities, or elliptical; all these forms may be 
seen in the W. African specimens, although the Indian ones are 
rather more constantly obovate. 
l. Indigofera bracteolata, Guill. et Perr. Fl. Seneg. 1. p. 176. 
—Senegambia ; on the Quorra, Vogel. 
2. Indigofera enneaphylla, Linn.—S. Thomas, Don ; Cape Palmas 
and Grand Bassa, Vogel. 
3. Indigofera sp. very near J. tetrasperma, Vahl, and T. panicu- 
lata, Perr. but possibly distinct. There is only a single 
Specimen in Vogel’s collection without any precise locality. 
It appears to be an erect annual, four or five feet high, much 
branched in the upper part, the upper leaves are simple and 
like those of 7. tetrasperma, but the lower leaves are wanting, 
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