120 LEGUMINOSjE. 



leaves and yellow flowers in racemes. 



Tribe ii. GenistEjE. Herbs or shrubs with palmately com- 

 pound or simple leaves and various colored flowers in racemes or 

 solitary. Stamens 10, monadelphous : anthers of two forms. 

 Radical, incurved or inflexed. 



2. Lupinus. Herbs, rarely shrubby, with various colored flowers in 



racemes: leaves digitate, mostly of more than 3 leaflets: calyx 

 deeply bilabiate: upper petal with recurved sides; keel falcate: 

 pods large, straight. 



3. Ulex. Spinescent shrubs with inconspicuous simple leaves and yel- 



low axillary flowers. 



4. Cytisus. Shrubs with green, often angular branches, palmately or 



pinnately trifoliolate leaves and solitary or racemose yellow flowers. 



Tribe hi. Trifolie^;. Mostly low herbs with palmately or 

 pinnately trifoliolate, rarely 5-7 -folio! ate leaves and axillary or 

 terminal, racemose, spicate, capitate or umbellate inflorescence. 

 Corolla papilionaceous. Calyx 5-lobed. Stamens diajlelphous 

 (9 and 1). 



5. Medicago. Herbaceous or rarely shrubby plants with palmately tri- 



foliolate leaves and axillary peduncles: petals free from the 

 stamens, deciduous: pods 1— several-seeded, falcate-incurved, or 

 coiled into a spiral. 



6. Melilotus. Erect herbs with pinnately trifoliolate leaves and small 



fragrant flowers in slender axillary racemes: petals free from the 

 stamens, deciduous: pods ovoid, small, scarcely dehiscent, 1—2 

 seeded. 



7. Trifolium. Herbs with palmately or pinnately trifoliolate. rarely 



5— 7-foliolate leaves and mostly very many flowers on axillary or 

 terminal peduncles: corolla persistent: the banner and wings com- 

 monly coherent with the staminal tube: pods concealed within or 

 but little exserted from the calyx, 1— (3-seeded. 



Tribe iv. Lote.e. Herbs or shrubs with pinnately 1-inany- 

 foliolate leaves and various colored flowers capitate or umbellate 

 on axillary peduncles, rarely solitary. 



8. Lotus. Herbaceous or suffrutescent plants with pinnate, usually 



3— inany-foliolate leaves ami solitary or numerous flowers on axil 

 lary peduncles with or without a 1— 3-foliolate bract at summit- 

 corolla deciduous, the banner often remote from the other petals- 

 pods oblong to linear, terete, turgid or plain, few or many-seeded. 



Tl;l,iK v. (Jalkok.k. Krecl herbs, or shrubs with unequally 

 pinnate, seldom stipellate leaves and axillary or terminal, race- 

 mose or spicate inflorescence. Corolla papilionaceous or other* 

 wise irregular. Stamens diadelphous (9 and 1), or sometimes 

 monadelphous. I >( >d> continuous, L-celled, several-seeded de- 

 hiscent : or L-2-seeded and indehigcent. Radicle incurved or in- 

 flexed. 



9. Psoraiea. Herbs with trifoliolate leaves and axillary spikes of 

 rather small flowers; herbage glandular-dotted : stamens mona- 

 delphous or diadelphous: pods indehiscent, 1-seeded. 



in. Petalostemon. Herbs with gland-dotted herbage unequally pinnate 



