[•24 LEGUMINOS.E. (PULSE FAMILY.) 



= = Herbage not glandular-dotted (excejit in n. 23); stamens mostly diadelphqns- i)o^i 

 2-valved, several-seeded ; leaves pinnately several-foliolate ; ftowers racemose, 

 o. Wings cohering with the keel ; pod flat or 4-angled , hoary })erenniai Jierbs. 



17. Tephi'osia. Standard broad. Pod flat. Leaflets pinnately veined. 



18. ludigoi'era. Calyx and standard small. Pod 4-angled. Leaflets obscurely veined. 

 h. Flowers large and showy ; standard broad ; wings free ; woody ; leaflets stipeilate. 



19. Robinia. Pod flat, thin, margined on one edge. Trees or shrubs. 



20. Wistaria. Pod tumid, marginless. Woody twiners ; leaflets obscurely stipeilate. 



c. Standard narrow, erect ; pod turgid or inflated ; x>erennial herbs. 



21. Astragalus. Keel not tipped with a point or sharp appendage. Pod with one or botl: 



tiie sutures turned in, sometimes dividing the cell lengthwise into two. 



22. Oxytropis. Keel tipped with an erect j)oint ; otherwise as Astragalus. 



23. Glycyrrhiza. Flowers, etc., of Astragalus. Anther-cells confluent. Pod prickly c\' 



nuiricate, short, nearly indehiscent. 

 *-+--.- Herbs with pinnate or pinnately 1 - 3-foliolate leaves; no tendrils : pod transversely 

 2-several-jointed, the reticulated 1-seeded joints indehiscent, or sometimes reduced to 

 one such joint. (Hedysare^.) 



= Leaves pinnate, with several leaflets, not stijiellate. 



2-1 .(Escliynomene. Stamens equally diadelphous (5 and 5). Calyx 2-lixiped. Pod several- 

 jointed ; joints square. 



25. Coronilla. Stamens unequally diadeljihous (9 and 1). Calyx 5-toothed. Joints oblong, 



4-angled. Flowers umbellate 



26. Hedysarum. Stamens unequally diadelphous (9 and 1). Calyx 5-cleft. Pod several- 



jointed ; joints roundish. 



= = Leaves pii'ina^ely 3-foUoiate, rarely 1-foliolate. 



27. Desniodiuxn. Stamens diadelphous (9 and 1) or monad^lphous below. Calyx 2-lipped. 



Pod several-jointed. Flowers all of one sort and com«plete. Leaflets stipeilate. 



28. Licspedeza. Stamens diadelphous (9 and 1); anthers uniform. Pod 1 - 2-jointed. Flow- 



ers often of 2 sorts, the more fertile ones apetalous. Leaflets not stipeilate. 



29. Stylosanthes. Stamens monadelphous ; anthers of 2 sorts. Pod 1 - 2-jointed. Calyx 



deciduous, the tube narrow and stalk-like. Leaflets not stipeilate. 

 4- -t- -t- ^- Herbs with abruptly ])innate leaves, terminated by a tendril or bristle ; stamens 

 diadelphous ; pod continuous, 2-valved, few-several-seeded. (Viciej::. ) 



30. Vicia. Wings adherent to the keel. Style filiform, bearded with a tuft or ring of hairs 



at the apex. 



31. Lathyrus. Wings nearly free. Style somewhat dilated and flattened upwards, bearded 



down the inner face. 

 .«- -1- -1- ^- ^- Twining (sometimes only trailing) herbs; leaves pinnately 3- (rarely 1- or 

 5-7-) foliolate ; no tendrils; peduncles or flowers axillary pod not jointed, 2-valved. 

 (Phaseole^. ) 



= Leaves pinnate. 



32 Apios. Herbaceous twiner ; leaflets 5-7. Keel slender and miioh incurved or coilea. 



= = Leaves 3-foliolate. Ovules and seeds several. Flowers not yellow. 



33. Phaseolus. Keel spirally coiled ; standard recnrved-spreading. Style bearded lengt/v 



wise. Flowers racemose. Seeds round-reniform. 



34. Strophostyles. Keel long, strongly incurved. ;5tyle bearded lengthwise. Flowers 



sessile, capitate, few. Seeds oblong, mostly pubescent. 



35. Centrosema. Calyx short, 5-cleft. Standard with a spur at the base ; keel broad, 



merely incurved. Style minutely bearded next the stigma. 

 56. Clitoria. Calyx tubular, 5-lobed. Standard erect, spurless ; keel scythe-shaped. 



Style bearded down the inner face. 

 37. Amphicarpfiea. Calj-x tubular, 4 - 5-toothed. Standard erect ; keel almost straight 



Style beardless Some nearly apetalous fertile flowers next the ground. 



