68 xlvii. § papilionace.e (baker). [Indigofera. 



Leaflets up to 11-13. 



Pod 6-8 lines long, 5-6-seeded 50. I. Heudelotii. 



Pod 12-18 lines long, 12-15-seeded 51. J. 



Group 10. Tinctoriae. — Leaves imparipinnate with obovate leaflets. Flowers in 

 many-flowered racemes. Shrubs or herbs. 



Leaflets 3-5. 



Herbaceous ; annuals or biennials, not argenteous. 

 Calyx-teeth lanceolate, as long as the tube. 



Leaflets oblanceolate 52. 1. crotalarioides. 



Leaflets roundish . ; . . 53. J. medicaginea. 



Calyx-teeth setaceous, much exceeding the tube. 



Stems trailing ; petiole very short 54. 1. oxalidea. 



Stems ascending ; petiole 6-9 lines. 



Leaflets usually 3, densely bristly 55. 1. trita. 



Leaflets usually 5, subglabrous 56. /. subulata. 



An argenteous perennial herb. 



Argenteous woody shrubs 57. J. benguellensis.^ 



Calyx-teeth linear-setaceous ; pod 3-4-seeded ..... 58. /. inhambanensis. 



Calyx-teeth lanceolate ; pod 6-8-seeded 59. I. paucifolia. 



Leaflets 5-9. 



Annual or biennial herbs, with soft spreading pubescence, 

 and opposite leaflets. 



Pubescence brown ; seeds 6-8 60. I. hirsuta. ^ 



Pubescence white ; seeds 4-5 61. I. astragaliva. 



Subglabrous annual with alternate leaflets 82. I. endecaphylla. 



var. radicans. 

 Argenteo-canescent herbs, with alternate leaflets. 



Pubescence adpressed, silvery 62. 7. alternans. 



Pubescence cottony, short-spreading 63. /. maritima. 



Thinly grey-hispid perennials, with small opposite oblanceo- 

 late leaflets. 



Racemes laxly 6-12-flowered 64. 7. heterocarpa. 



Racemes dense, 2-3 inches long # . . . . 65. I. setiflora. 



Thinly grey-hispid perennial, with small opposite oblong 



leaflets 66. J. mimosoides. 



Shrubs with subglabrous or thinly grey-hispid branches and 

 opposite leaflets. 



Racemes sesfeile, conical 67. I. torulosa. 



Racemes short-stalked, subcorymbose 68. 7 subcorymbosa. 



Racemes distinctly 'stalked, 2-4 inches long. 

 Calyx-teeth deltoid, short. 



Leaflets 6-8 lines long 69. I. Binderi. 



Leaflets 2^-3 inches long 70. I. rhynchocarpa. 



Calyx-teeth linear-subulate, exceeding the tube. 



Leaflets 6-9 lines long 71. I. Spachii. 



Leaflets 12-18 lines long . . . 72. /. Quartiniana. 



Argenteous shrubs, , with opposite leaflets. 



Pod 4-5 lines long, 2-4-seeded 73. I. semitrijvga. 



Pod 15-16 lines long, many-seeded . . 74. I. pruinosa. 



An argenteous shrub, with alternate leaflets 75. i". Schimperi. 



LeaQets 9-15. 



Pods clothed with gland-tipped bristles. 



Suflruticose, pod 6-8 seeded. . ... 76. I. atriceps. 



Herbaceous, pod 2-4-seeded ....... 77. I. secundiflora. 



Pods glabrous or subglabrous, not glanduloso-setose. 

 Herbs with opposite leaflets. v 



Pod 2-3-seeded, oblong . . 78. I. Perrottetii. 



Pod 15-20-seeded, linear ...... 79. /. costata. 



