Indigofera.] xlvii. § papilionacejs: (baker). 69 



Herbs with alternate leaflets. 



Argenteous ; pod 9-10-seeded 80. 7. daleoides. 



Grey-pubescent; pod 2-3-seeded 81. I. enneaphyUa. 



Subglabrous;, pod 6-8-seeded 82. 7. endecaphylla. 



Suffruticose, with small opposite leaflets. 



Leaflets 3-4 lines long ; seeds numerous 83. I. phyllanthoides, 



Leaflets 6-9 lines long ; seeds 1-2 84. 7. eubulifera. 



Shrubs, with opposite leaflets, and very small calyces, with 

 short teeth. 

 More or less silvery, with leaves turning blackish when 

 dried. The indigo-yielding species. 

 Leaflets oblanceolate. 



Pod oblong, 2-3-seeded 85. 7. amorphoides. 



Pod linear, 6-8-seeded 86. 7. arrecta. 



Leaflets obovate or oblong. 

 Pod reflexed, sickle-shaped. 



Densely argenteous ; leaflets usually 9 . . .87. I. argentea. 

 Slightly argenteous ; leaflets 13-17 . . . . 88. 7. Anil. 

 Pod straight. 

 Racemes dense, subsessile. 



Pod 6 -8-seeded 89. 7. umbonata. 



Pod 8-12-seeded 90. 7. orthocarpa. 



Racemes lax, stalked . . . 91. 7. tinctoria. 



Not at all silvery, the leaves glabrous when mature, not 

 turning black. 



Racemes much shorter than the leaves 92. 7. emarginella. 



Racemes exceeding the leaves 93. I. macrophylla. 



Leaflets 15-30. 



Herbaceous, subglabrous 94. 7. dendroides. 



Herbaceous, densely viscid 95. 7. viscidisslma. 



Shrubby ; leaflets 5-6 lines long 96. 7. sutherlandioides 



Shrubby; leaflets 10-15 lines long 97. I.fulgem. 



§§§§ Amecarpus. — Pods linear, flattened, bi- or multiovulate, unarmed. 

 Pod recurved. 



Peduncle very short 98. 7. Hochstetteri. 



Peduncle 1-2 inches long 99. 7. oligophylla. 



Pod straight. 



Pod linear, 10-12-seeded 100. 7. aspera. 



Pod two to three times as long as broad, 3-5-seeded. 



Leaflets linear 101. 7. senegalenxis. 



Leaflets obovate 102. 7. arabica. 



Pod 2-seeded 103. 7. ervoides. 



1. I. echinata, Willd.; DC. Prod. ii. 198. Stems herbaceous, 1-2 ft. 

 long*, branched copiously from the base, and sometimes also upwards, 

 moderately thick, 2-edged, finely pubescent. Stipules linear-setaceous. 

 Leaves simple, subsessile, elliptical or obovate, l|-2 in. long r mucro- 

 nate, both sides finely pubescent. Flowers in lax racemes an inch 

 long- of 6-1 flowers each from the axils of the leaves, on slender erect 

 peduncles about the same length. Pedicels short. Calyx campanu- 

 late, I in. deep, the setaceous subequal segments reaching down nearly 

 to the base. Corolla twice as long as the calyx. Pod | in. long, ob- 

 long-falcate cuspidate, triquetrous, 1-seeded, the upper edge entire, the 

 two lower ones with each a double row of strong spreading prickles. — 

 Wight, et Arn. Prod. Fl. Ind. Or. 198. Acanthonotus, Benth. FL 

 Nigr. 293. 



