XLTI. LEOUMINOS.^. 67 



Calyx distinctly 2-lipped, the upper lip 2-fid, 



lower 3-fid. Legume linear, compressed. 



Calyx deeply divided. Corolla conspicuous. 



Standard longer than the keel; legume 



silky 16. Aegxrolobium. 



Standard shorter than the keel ; legume 



torulose 17. DicniLrs. 



Calyx shortly 2-lipped. Corolla small. Le- 

 gumes glandular or viscid-pvibescent . . 18. Melolobium. 

 Calyx bell-shaped, hollow or intruse at base, 

 shortly 5-fid. 

 Standard much longer than the keel. A 



large shrub 19. Hypocalyptus. 



Standard much shorter than the keel. A 



slender undershrub 20. Loddigesia. 



Calyx oblique, 5-toothed or 5-fid. Stipules 0. 

 Legume linear, flat, terete or turgid, several- 

 seeded 21. Lebeckia. 



Legume ovate or oblong, winged on upper 



side, 1-seeded 22. Viboegia. 



Calyx bell-shaped, acute at base, 5-toothed or 

 5-fid. 

 Leaves petioled, 3-foliolate, mostly with 



stipules 23. Buchenrcedeea. 



Leaves sessile ; leaflets as if tufted leaves, 



without stipules 24. Aspalathtts. 



Tribe 4. PsoraliejE, Stamens diadelphous. Ovary 1-ovuled. — Leaves 

 never stipelled, variously compound, commonly sprinkled with resinous, 

 glandular dots. 



The only genus 25. Psoealea. 



Tribe 5. Teifolie^. Stamens diadelphous. Ovary 2- or several- 

 ovuled. — Small herbs. Stem erect or trailing, but not climbing. Leaves 

 palmately or pinnately 3-foliolate, rarely 5-foliolate, never stipelled. 

 Keel very acute. Legume cylindrical, many-seeded 26. Lotus. 

 Keel obtuse. 



Keel adnate to the wings. Legume hidden in the 



calyx 27. Trifolium. 



Keel free. Legume longer than calyx. 



Legume oval or oblong, 1-4-seeded. Flowers 



racemose 28. Melilotus. 



Legume Hnear, curved, many-seeded. Flowers 



subumbellate 29. Trigonella. 



Legume much-incurved or spirally twisted, 



often bordered with spinous teeth .... 30. Medicago. 

 Tribe 6. Indigoeere^. Stamens diadelphous ; anthers a'piculate ! 

 Ovary 2- or many-ovuled. — Stems not twining. Leaves variously com- 

 pound, rarely 1-foliolate. Flowers racemose. Pubescence often strigose. 

 Standard reflexed ; keel with a spur at each side ; 



flowers red purple or white 31. Indigofera. 



Tribe 7. Galegeje. Stamens monadelphous or diadclplious. Ovary 2- 

 or several- ovided. Legume 2-valved, 1-celled. — Stem not twining. Leaves 

 pinnate, very rarely 1-foliolate, sometimes stipelled. Flowers racemose. 

 Legume coriaceoiis or rigid, not membranous. 



F 2 



