KEY. 15S 



the rest fertile, consisting merely of a pistil between 2 bract- 

 lets. Style hooked. Pod reticulated, 1- to 2-jointed. 



Stylosanthes elatior, Swartz. 



Leaves palmately 7- to 11-foliolate ; leaflets oblance- 



olate. Flowers showy, purplish-blue, rarely white, in a long 



and loose raceme. iLupiuus perennis, L. 



S39. Pod several-seeded, linear, 2-valved. Leaves pin- 

 nate ; leaflets 5-29. Flowers racemed, white or purplish. 



Tephrosia (261). 

 Pod 1-seeded and indehiscent. Corolla imperfectly 

 or slightly papilionaceous. Petals all clawed. Standard, in 

 the bottom of the calyx, heart-shaped or oblong. Leaves 

 pinnate ; leaflets linear. Flowers in terminal, peduncled 

 heads or spikes 240 



340. The cleft tube of filaments bearing 4 of the petals 

 on its middle ; anthers 9 or 10. Corolla small, whitish. 



Dalea alopecuroides, Willd. 



The cleft tube of filaments bearing 4 petals at its 



summit ; anthers 5. Corolla rose-purple. Petalostemon. 



341. Leaves tendril-bearing, abruptly pinnate, of 1- 

 several pairs of leaflets. Style bent at a right angle with the 

 ovary 242 



Leaves not tendril-bearing 243 



343. Style filiform, hairy most outside and all around 



the summit. Stipules usually half arrow-shaped. Vicia. 



Style flattened, hairy most inside. Stipules half 



arrow-shaped, half cordate, or halberd-form. Lathyrus. 



343. Legumes jointed (loments), sometimes of one joint 

 only 244 



Legumes not jointed, 1-, or 2- to many-seeded. .247 



344. Leaves odd-pinnate, with more than 3, or many 

 leaflets. Pod several-jointed 245 



Leaves pinnately 3-foliolate 246 



345. Stamens equally diadelphous (5 and 5). Calyx 2- 

 lipped. Leaves with 37-51 sensitive leaflets. Racemes 3- to 

 5 -flowered. Corolla yellow, reddish externally. Pod of 

 several square joints. iSBschyomene hispida, Willd. 



