Indigofera.'l LEGUMINOSAE. 307 



I'o in. long; stipules subulate; racemes elongate; pods 

 deflexed : 



Eacemes up to 8 in. long or longer ; pods linear, slender, 

 subtetragonal, curved outwards, 2 in. long, 10-15-seeded 



16. subulata. 



Racemes up to 4 in. long ; pods straight, cylindric or 

 obscurely tetragonal, 1 in. long, 5-6-seeded 



17. marginulata 

 Leaflets 7-13 ; flowers small, under -3 in. long: 



Side leaflets alternate, oblaiiceolate, up to 1 in. long, 

 usually from 9 to 12 ; stipules lanceolate, scarious ; racemes 

 up to 4 in. long, many-flowered ; pods '75-1 in. long, much 

 deflexed, tetragonous, sharp-pointed, straight, 6-10-seeded 



IS. endecaphylln. 

 Side leaflets opposite : 



Racemes 3-6-flowered, short ; leaflets small and narrow, 

 stipules setaceous ; pod flattened, margined, appressed 

 pubescent, slightly torulose, '6 in. long, 10-12-seeded 



19. tenuifolia. 

 Racemes 6- 12- flowered: 



Densely pubescent with gland-tipped viscous hairs ; 

 leaflets small, elliptic- obovate with white appressed 

 hairs as well as the glandular ones, stipules setaceous ; 

 pod cylindric, '8 in. long, mucronate, very hirsute 



20. viscosa. 



No gland-tipped hairs, only appressed white ones ; 

 leaflets up to 1 in. long, linear-oblong or -oblanceolate, 

 often only 5, stipules minute ; pod linear, compressed , 

 pubescent, 1-1*5 in. long, curved at the tip ; racemes 



very short 21 . parviflora. 



Racemes more than 12-flowered : 

 Pods cylindric, more or less curved : 



Branchlets very silvery canescent; pods appressed 

 silvery pubescent, '4--5 in. long, 3-4-seeded, slightly 

 torulose ; leaflets 7-9, obovate, emarginate 



22. articulata. 



Branchlets glabrous, the youngest only slightly 

 silvery canescent; pods green, '5-1 in. long, 6-12- 

 seeded; leaflets 7-11, elliptic-obovate : 



Pods slender, under '1 in. thick, sharply pointed, 

 slightly torulose, 10-12-seeded; racemes usually 

 shorter than the leaves... ...23. tinctoria. 



