218 XLV. LEGUMINOSiE [Indigo/era 



shrub, bracts broad concave, long-acuminate, exceeding the buds, pods straight with 

 a long slender point. 



5. I. Gerardiana, Wall. ; Collett Simla Mora, fig. 36. — Syn. I. heterantha, 

 Wall. ; Brand. F. Fl. 135. Vern. Kathi, Jauns. 



Strigose with grey hairs. Leaflets less than -^ in. long, elliptic-oblong, 

 obtuse, stipels setaceous, persistent. Calyx teeth lanceolate, as long as tube. 

 Pods reflexed when ripe, straight, cylindric, marginate, with a few scattered 

 hairs. 



Outer North-West Himalaya, ascending to 8,000 ft. ; eastern outskirts of the 

 Su leiman range. Fl. May, June. 



6. I. Dosua, Ham.; Fl. Brit. Ind. ii. 102. 



A large shrub, attaining 15 ft., at times only an undershrab. Densely 

 pubescent or tomentose, leaflets 10-20 pair, elliptic- or linear-oblong, mucro- 

 nate, \—l in. long. Fl. bright red, calyx densely silky, teeth very unequal. 



Himalaya 6,000-8,000 ft., from Simla eastwards. Shan hills, Upper Burma. Fl. R. S. 

 A remarkable variety is I. stachyodes. Lindl. Kumaon, Sikkim, Khasi hills and 

 Shan hills in upper Burma, shoots rusty tomentose, leaflets linear. 



In this section, or near it : 7. 1, galegoides, DC, Khasi hills, Dacca, Travancore, Ceylon, 

 Burma, Malay peninsula and Archipelago. Borneo, the Philippine islands, a tall shrub ; 

 leaflets large, pods erect, long-acuminate, 2-3 in. long. 8. I. bella, Prain, Ann. Bot. 

 Gard. Cal. ix. t. 28. Upper Burma, leaflets 3-4 pair, 3 in. long, glaucous beneath. Fl. 

 white, over J in. 



B. Leaflets mostly opposite, 4-10 pair. Fl. small, under -J- in. long. 



9. I. tinctoria, Linn. ; Wight Ic. t, 365. TJie Indigo plant. Vern. Nil, 

 Hind. ; Mi, Burm. 



Branches twiggy, silvery, leaflets 4—6 pair. Fl. reddish yellow, in lax 

 racemes, calyx teeth lanceolate, as long as tube. Pods deflexed, straight or 

 slightly curved. 



Cultivated as an annual, the plant being cut when the fl. appear, or as a biennial or 

 triennial, a second or even a third year's crop being obtained from the same plant. 

 Original home of this species doubtful. 10. I. Anil, Linn. (I. suffruticosa, Mill. ; 

 Prain and E. Baker in Journal of Botany. 1902, 138), possibly only a variet} 7 with 

 falcate reflexed pods, the tip being curved upwards, is also cultivated for Indigo, 

 and has run wild in Burma. 11. I. argentea, Linn., pods reflexed, torulose, 3-4 

 seeded, is indigenous in Sind, Western Eajputana, and the dry districts of the Deccan, 

 also in Abyssinia and the Sudan, cultivated for Indigo in Arabia and Egypt. 



To the same group belong : 12. I. Wightii, Grah., western peninsula from Bombay 

 southwards, also Tenasserim, pods straight, erect, terete, 1-1J in. long. 13. I. con- 

 stricta, Trim. Handb. Ceylon, ii. 27 ; Talbot List 67, moist forests of North Kanara. 

 Ceylon. Leaflets 4-5 pair, pods recurved, 3-7 seeded, constricted between seeds, 1J in. 

 long. 14. I. nigrescens, Kurz ; Prain in Journ. As. Soc. Beng. vol. lxvii. 286. Khasi, 

 Kaehin and Shan hills. Yunnan, leaflets S-10, fl. $ in. long. 



C. Leaflets not opposite, few, 1, 3 or 5. 



15. I. paucifolia, Delile ; Wight Ic. t, 331. 



A small shrub, with numerous stout woody, ascending branches, the whole 

 plant grey with fine silvery hairs, leaflets 3-5 linear-lanceolate, the terminal 

 largest. Fl. small, brick-red, pods i-f in. long, torulose. 



Sind, Gujarat, North- West India as far as Benares, dry districts of Central and South 

 India. Fl. Sept. to Jan. Ceylon, dry region. Arabia, Egypt. 



Two Burma shrubs, with simple, sometimes 3-foliolate leaves : 16. I. Brunoniana, 

 Kurz F. Fl. i. 359, grey with short hairs, leaves 2-5 in. long, chiefly in Eng forest. 

 17. I. caloneura, Kurz, I.e., 360, rusty tomentose, leaves 2-3 in. long. 



6. SESBANIA, Pers. ; Fl. Brit. Ind. ii. 114. 



Herbs or short-lived trees. Wood white, soft. Leaves paripinnate, with 

 numerous opposite deciduous leaflets. Stipules setaceous, caducous, stipels 



