120 LEGUMINOS2.. 
leaves and yellow fiowers in racemes. 
Tripe uw. GENISTE®. 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 fiowers. : . 
4. Cytisus. Shrubs with green, often angular branches, palmately or 
pinnately trifoliolate leaves and solitary or racemose yellow flowers. 
TriBe ur. TRrIFoLIEA. Mostly low herbs with palmately or 
pinnately trifoliolate, rarely 5-7-foliolate leaves and axillary or 
terminal, racemose, spicate, capitate or umbellate inflorescence. 
Corolla papilionaceous. Calyx 5-lobed. Stamens diadelphous 
(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—6-seeded. : 
TriBe tv. Lorex. Herbs or shrubs with pinnately 1-many- 
foliolate leaves and various colored flowers capitate or umbellate 
on axillary peduncles, rarely solitary. 
8. Lotus. Herbaceous or suffrutescent plants with pinnate, usually 
38—many-foliolate leaves and 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. 
TRIBE Vv. GALEGEM. Erect 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. Pods continuous, 1-celled, several-seeded, de- 
hiscent ; or 1-2-seeded and indehiscent. Radicle incurved OF in- 
flexed. | 
9. Psoralea. Herbs with trifoliolate leaves and axillary spikes of 
rather small flowers; herbage glandular-dotted: stamens. mona- 
delphous or diadelphous: pods indehiscent, 1-seeded. 
10. Petalostemon, Herbs with gland-dotted herbage unequally pinnate 
