WOOTON AND STANDLEY FLOBA OF NEW MEXICO. 337 



Leaves with an even number of leaflets, termi- 

 nated by a tendril or a bristle-like 

 appendage. 

 Styles filiform, hairy all around and below 

 the apex; stamen tube usually oblique 



at the summit 25. Vicia (p. 373). 



Styles flattened, hairy on the inner side; 



stamen tube truncateor nearly so 26. Lathyrus (p. 375). 



Leaves odd-pinnate, rarely palmate, without 

 tendrils. 

 Pod a loment, breaking transversely into 

 1 -seeded indehiscent segments. 

 Pods 1 or 2-seeded, more or less spiny 



or toothed 22. Onobrychis (p. 371). 



Pods several seeded, not spiny or 

 toothed. 



Leaves 3-foliolate 23. Meibomia (p. 371). 



Leaves with numerous leaflets 24. Hed-ysarum (p. 373). 



Pod not a loment, 2-valved or indehiscent, 

 sometimes 2-celled by intrusion of the 

 sutures. 

 Stems slender, twining; plants herba- 

 ceous, annuals or perennials; 

 leaves 3-foliolate. 

 Keel of the corolla not coiled nor 

 incurved. 



Flowers yellow 27. Dolicholus (p. 376). 



Flowers purplish 29. Galactia (p. 376). 



Keel of the corolla coiled or in- 

 curved. 

 Keel of the corolla spirally 

 twisted ; in florescen ce 



racemose 30. Phaseolus (p. 377). 



Keel merely incurved; inflo- 

 rescence various. 

 Annual; calyx 5-toothed; 

 inflorescence capi- 

 tate 31 . Strophostyles (p. 378). 



Perennials; calyx 4- 

 toothed ; flowers soli- 

 tary or in 2 'sin the 



axils 32. Oologania (p. 378). 



Stems not twining; herbs or shrubs; 

 leaves 3 to many- folio late. 

 Foliage gland ular-punctate(exceptin 

 a few species of Parosela). 

 Podscovered with hooked prickles. 21. Glycyrrhiza (p. 371). 

 Pods not prickly. 

 Leaves palmately 3 or 5-foliolato 



or pinnately 3-foliate 1 1 . Psoualka < p. 348). 



Leaves mostly pinnately 5 to 

 many-folio late. 



Stamens only 5 10. Petalostemum (p. 355). 



52576°— 15 22 



