70 FAM. 93. 



and wings cohering to the middle of the shorter keel, - - Vicia, .Vetch 

 V. acutifolia. Leaflets 2-6, linear; racemes 4-8 flowered; flowers pale-blue, vex- 

 illum tipped with purple. Sandy soil, near the coast. Spring to Fall. 



V. Floridana. Leaflets 4-6, oblong; peduncles 2-5 flowered; flowers white or 

 pale-blue, keel and banner with a violet streak. Sandy soil. Spring to 

 Fall. 



Two cultivated species belong here: 



Pisum sativum, Common Pea. Leaflets usually 4, peduncles several flow- 

 ered; style dilated above and grooved on the back. 



Lathyms odoratus, Sweet Pea. Leaflets 2, peduncles 2-flowered, large, fra- 

 grant; style flat, dilated above, ascending. 

 4. Herbs, shrubs, trees or woody vines, --------5 



4. Herbs or herbaceous vines, --------.23 



5. Fruit 2-valved or indehiscent, not a loment, - - 6 



5. Fruit a loment, ----------- 19 



6. Foliage not glandular-dotted, --------.7 



6. Foliage glandular-dotted, - - - - - - - - -16 



7. Stamens monadelphous, anthers of two kinds, ------ 8 



7. Stamens diadelphous at least beyond the middle, anthers all alike. 



(See genera Indigojera and Cracca) , ------_g 



8. Upper stipules decurrent; calyx 5-lobed; pods inflated; — low herbs 



with simple leaves; flowers in racemes or solitary; seeds loose 



in the mature pod. Dry soil. Spring to Fall. - Crotalaria, Rattle-box 



C. rotundifolia. Pubescent; leaflets orbicular to oval; stems tufted, spreading. 



C. Purshii. Slightly pubescent; leaflets linear, oblanceolate and spatulate; stems 

 slender, more or less tufted, with short appressed hairs. 



8. Stipules not decurrent; calyx 2-lipped; pods flat; — ascending or pros- 



trate herbs with palmately 5-15 foliate, or simple, rarely 3-foliate 



leaves, and flowers in terminal racemes, - - _ Lupinus, Lupine 

 L. diffusus. Densely silky; leaves simple, mucronate; flowers blue with a purple 



or white blotch on the vexillum. Dry pine-land. Spring. 

 L. villosus. Densely villous; leaves simple, acute; flowers pale-red with a purple 



blotch on the vexillum. Dry pine-land. Spring. 



9. Leaves trifoliate, ---------- 10 



9. Leaves pinnate, pods dehiscent, - - - - - - - - 11 



10. Pods straight; — herbs with erect or creeping stems; flowers mostly 



in heads; calyx-lobes slender and equal, or broad and the upper 

 two united; pod flat or terete, and included in the persistent 

 corolla, --------- Trifolium, Clover 



T. pratense, Red Clover. Erect or ascending; pubescent; leaflets oblong to 

 oval or ovate, often blotched; calyx villous, lobes filiform; corolla red, pur- 

 ple or white. Cultivated grounds. Spring to Fall. 



T. repens, White Clover. Prostrate; smooth; leaflets obovate or roundish; 

 calyx smooth, lobes short; corolla white, vexillum much longer than wings 

 and keel. Roadside. Spring to Winter. 

 10. Pods curved or coiled; — herbaceous or shrubby, erect or prostrate; 

 flowers in elongated or head-like peduncled racemes; calyx- lobes 

 nearly equal, slender, ------ Medicago, Medic 



M. lupulina. Prostrate; flowers yellow; pod 1-seeded, smooth. Waste places. 

 M. sativa, Lucerne Clover, Alfalfa. Erect; leaflets oblong-lanceolate or obo- 



