FLORA NIGRITIANA. : 295 
A widely diffused species, extending from Tropical Africa 
through the whole of Southern Asia to the Philippine Islands 
and North Australia, and varying considerably in most of these 
localities. , 
9. Indigofera Anil, Linn.—I. uncinata, G. Don, Gard. Dict. 2. p. 
208.—Sierra Leone and on the Quorra, Don, Vogel; cultivated. 
The name Anil, given by Linnæus to the West African and 
American indigo, is derived from a Hindostanee term applied to 
the Indian indigos, and especially to the J. tinctoria, and signi- 
fying blue. Both the T. tinctoria and I. argentea are also cul- 
tivated in West Tropical Africa. 
Besides the above nine species, the same region possesses at 
least twenty-seven other species of Indigofera, viz.: 1. I. (Ame- 
carpus) Senegalensis, Lam. (I. tenella, Schum. et Thonn., and 
Brissonia trapezicarpa, Desv.) from Senegal and Nubia; 2. J. 
diphylla, Vent., from Senegal ; 3. I. Perrottetii, Guill. et Perr., 
from Senegal; 4. T. oligosperma, DC. (I. glutinosa, Schum. et 
Thonn.) Senegal, Guinea and Nubia; 5. J. macrocalyx, Guill. et 
Perr., Senegal; 6. I. nigricans, Vahl, (J. elegans, Schum. et 
Thonn.) Guinea; 7. T. pulchra, Vahl, Senegal and Nubia; 
8. I. procera, Schum. et Thonn., Guinea; 9. J. trichopoda, 
Guill. et Perr., Senegal; 10. 7. tetrasperma, Schum. et Thonn., 
(nee Vahl ex Webb, supra p. 121), Guinea; 11. 7. paniculata, 
Pers., Sierra Leone ; 12. J. viscosa, Lam. (I. glutinosa, Guill. et 
Perr., and possibly Z. lateritia, Willd.), Senegal and Guinea, and 
thence across Tropical Africa to the East Indian Peninsula ; 
13. T. sessiliflora, DC., Senegal; 14. T. linearis, DC., Senegal 
and Cape Verd Isles; 15. 7. subulata, Vahl., (I. Thonningii, 
Schum.) Guinea; 16. I. pilosa, Poir. (I. Guineensis, Schum. et 
Thonn.), Guinea; 17. J. aspera, Guill. et Perr., Senegal and 
Cordofan ; 18, I. Prieureana, Guill. et Perr., Senegal ; 19. J. 
lasiantha, Desv., Angola ; 22. I. macrophylla, Schum. et Thonn., 
Guinea ; 23. I. secundiflora, Poir., Guinea, and four unpublished 
species from Senegal.. The Z. ornithopodiodes of Schum. and 
Thonn., cultivated in Guinea, appears to be the J. tinctoria. — 
Of the allied genus, Cyamopsis, there is one Senegambian 
Species, C. Senegalensis, Guill. et Perr., also found in — 
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