98 XLVII. § PAPILIONACEE (BAKER). [ Indigofera. 
small, setaceous. Petioles $ in. long, firm, erecto-patent. Leaves 
2-24 in. long with 4 pairs of leaflets, which are obovate, 3-1 in. long, 
the lateral ones opposite, short-stalked, both sides permanently silvery, 
turning blackish when dried. Racemes 12—20-flowered, 1-1} in. long 
when in flower, sessile or nearly so. Pedicel about equalling the sil- 
very calyx, which is half a line deep, teeth reaching about halfway 
down. Corolla yellow, about 4 times as long as the calyx. Pod 
deflexed, sickle-shaped, } in. long, } in. thick, terete, slightly torulose, 
glabrous when mature, 3—4-seeded.—A. Rich. Fl. Abyss. 1. 184. 1. 
glauca, Lam. Encycl. iii. 246, I. tinctoria, Forsk. Aigypt. 138 non Linn. 
I. articulata, Gouan, Must. 49. I. eerulea, Roxb. Fl. Ind. iii. 387. 
Wight. Ic. ii. t. 3866. 
Nile Land. Nubia, Kotschy! Schweinfurth! Abyssinia, Schimper! Roth! 
Also wild and cultivated in the Barbary States, Egypt, and Arabia, and the East 
Indies. Much more argenteous than J. Anil, which it resembles in its sickle-shaped pod, 
with fewer leaves and seeds. 
88. I. Anil, Linn.; DC. Prod. ii. 225. A copiously branched shrub 3-9 
ft. high, branches straight, woody, deeply sulcate, thinly silvery. Sti- 
ie small setaceous. Petiole under } in. long, firm, erecto-patent. 
eaves 2-4 in. long, leaflets 6-8 pairs, oblong or obovate, 3-1 in. 
long by about half as broad, lateral ones opposite, short-stalked, both 
sides subglaucous and thinly silvery, upper one nearly or quite glabrous 
when mature, turning blackish when dried. Racemes moderately 
dense, 1-2 in. long when in flower, nearly sessile. Pedicel equalling 
the obliquely campanulate thinly silvery calyx, which is not more than 
half a line deep, the lower teeth lanceolate, reaching halfway down, 
the upper shorter. Corolla fugacious, yellow, four times as long as 
the aii: Pod reflexed, sickle-shaped, }—3 in. long, 4 in. thick, sub- 
tetragonous with thickened sutures, glabrous when mature, 6—8- 
seeded.—Guill. et Perr. Fl. Seneg. i. 178. J. uncinata, G. Don, Gard. 
Dict. ii. 208. 
One of the species most commonly cultivated. We have it from Senegambia, Sierra 
Leone, Guinea, Mozambique, Angola, and Zambesi land. It is said to be a native of 
Tropical America, and is subspontaneous in Tropical Africa in various places, espe 
cially along the coast about Sierra Leone. 
89. I. umbonata, Welw. mss. A rigid undershrub 2 ft. high with 
terete woody grey sulcate finely grey-hispid long stiff branches. St- 
mules setaceous very minute. Petioles 3-6 lines. Leaves 2-24 in. 
bite leaflets 11-18, obovate-oblong, reaching 6-7 lines long, 4 ™- 
broad, blunt with a minute mucro, glaucous and finely grey-hispid 0” 
both sides, all distinctly stalked, the side ones opposite. Racemes 
sessile, 12-20-flowered, 6—9 lines long. Calyx and pedicels each 4 
line long, the former brown-silky, its teeth deltoid, shorter than the 
tube. Corolla 1-2 lines long, brownish when dried, finely clothed 
externally with adpressed silky hairs. Pod 6-9 lines long, 1} line 
thick, terete, straight, glabrous, 6—8-seeded, with a small prominent 
umbonate ring at the point. 
