136 XXXI. LEGUMINOS^. [Indigofera. 



largely in tropical Africa, and which, according to Macfadyen's Flora of Jamaica, 

 L 245, supported by Grisebach, Flora of the Brit. West Indies, 181, is indi- 

 genous in Jamaica. To this species some cultivated forms from Burma and 

 other parts of India may be referred. There are intermediate forms between I. 

 Anil and tmetoria, and possibly they may have to be considered as one species, 

 indigenous in America and Western Africa. 2. /. argentea, Linn., probably 

 identical with /. ccerulea, Eoxb. Fl. Ind. iii. 377, Wight Ic. t. 366, with 4 pairs 

 of obovate leaflets, on both sides permanently silvery, and short, thick, curved, 

 3-4-seeded pods, wild in the Beluchistan hills, Sindh, and (/. ccerulea) in South 

 India ; wild and cultivated in the Barbary States, Egypt, and Arabia. The 

 cultivated forms of Indigo in India demand further examination. 



3. I. atropurpurea, Hamilton ; Eoxb. FI. Ind. iii. 381 ; Wight Ic. t. 

 369. — Vern. Khenti, jand, Kaghan; Kathi, gorkatri, Kashmir; Kala 

 saJcena, sakna, Kamaon. 



A large shrub, nearly glabrous, young parts with scattered adpressed 

 hairs. Leaves imparipinnate ; common petioles 6-10 in. long, spreading; 

 leaflets opposite, on short petiolules, 5-6 pair, ovate-oblong, mucronate, 

 IJ in. long. Stipules early caducous, stipels setaceous at the base of 

 leaflets. Flowers dark purple. Eacemes as long as, or longer than, the 

 leaves ; bracts lanceolate, longer than buds. Calyx with scattered white 

 hairs ; teeth short, triangular. Pods spreading, reticulate, glabrous, mar- 

 ginate, straight, linear, compressed, IJ in. long, with 10 seeds. 



Salt range, 2500-5000 ft. Abundant in the outer Himalaya from Hazara to 

 Nepal, generally between 2000 and 9000 ft., descending occasionally to 1200 ft. 

 in the SiwaUk hills. In Pangi on the upper Chenab between 8000 and 9000 ft. 

 Kasia hills. The twigs are used for basket-work and for twig-bridges. 



Of the numerous other shrubs and undershrubs of this genus which are found 

 in North and Central India, I wiU only mention : 1 . 7. pulchella, Eoxb. Fl. Ind. 

 iii. 382. — Syn. I. arhorea, Koxb. ib. 381 ; Wight Ic. t. 368 ; I. violacea, Roxb. 

 ib. 380. — ^Vern. Sakena, Kamaon. A large shrub, with rose-coloured or violet 

 flowers, hairy ; leaflets 6-10 pair, obovate-oblong, obtuse, or emarginate ; bracts 

 longer than flower-buds, and calyx-lobes triangular. South India, Bengal, 

 N.W. India, ascending to 5000 ft. in the outer Himalaya. Fl. Jan.-June. 2. 

 I. linifolia, Lion. ; Eoxb. Cor. PL t. 196 ; Fl. Ind. iii. 370 ; Wight Ic. t. 313 ; 

 W. & A. Prodr. 198. — ^Vem. Torhi, Ph. ; Bharwra, Bengal. A small CKspitS'se 

 undershrub, common throughout the plains of India, with simple, linear leaves 

 and small globose 1-seeded pods. 



5. COLUTEA, Linn. 



Shrubs mth imparipinnate leaves. Stipules smaU. Flowers yeUow or 

 reddish, rather large, in few-flowered axillary racemes. Calyx-teeth sub- 

 equal, or 2 upper shorter. Standard rotundate, bi-pHcate or bi-callose at 

 the base, shortly clawed; wings falcate-oblong ; keel-petals incurved, obtuse, 

 with long connate claws. VexilLary stamen free ; anthers uniform. Ovary 

 stipitate multiovulate ; style longitudinally bearded above ; stigma subapi- 

 cal. Pod membranous, inilated, indehiscent or opening at the top. Seeds 

 reniform, funiculate. 



1. C. nepalensis, Sims. Bot. Mag. t. 2622; Bot. Eeg. t. 1727. Nepal 

 Bladder Senna. — Vern. Brda, Ladak. 



