406 FABACEAE 



Leaves appressed pubescent or sparingly villous 



beneath. 5. L. Nuttallii. 



Few, if any, of the peduncles exceeding the leaves. 

 Calyx of petaliferous flowers 3-5 mm. long. 



Leaflets densely woolly beneath. 6. L. Stuvei. 



Leaflets glabrate or appressed pubescent be- 

 neath. 

 Leaflets linear to linear-oblong. 7. L. virginica. 



Leaflets oval to oval-oblong. 8. L. frutescens. 



Calyx of petaliferous flowers 6-8 mm. long. 9. L. simulata. 



Flowers all alike and perfect. 



Peduncles shorter than the dense globose heads. 



Stem loosely pubescent; calyx 8-12 mm. long. 10. L. capitata. 



Stem appressed pubescent; calyx 5-7 mm. long. II. L. anguslifolia. 



Peduncles chiefly longer than the subcylindric heads. 



Stem with appressed pubescence. II. L. angustifolia. 



Stem with long, spreading or loosely spreading hairs. 



Leaflets oval to sub-orbicular. 12. L. hirta. 



Leaflets narrowly oblong. 13. L. oblongifolia. 



2. Annual; naturalized species; stipules and calyx-lobes broad. 14. L. striata. 



i. L. procumbens Michx. In dry soil: N. H. to Fla., the Ind. 

 Terr, and La. 



Conn. Throughout, but not very common. 

 N. Y. Common on L. I. and S. I., decreasing up the Hudson 



Valley to Dutchess and Ulster counties, but not reported from 



the Catskills. 

 N. J. Wanting in the pine-barrens, exceedingly rare in the region 



surrounding the barrens, becoming common in Mercer and 



Middlesex counties, thence increasing northward. 

 Pa. Monroe, Northampton, Bucks, Philadelphia, Delaware and 



Chester counties. 



Tertiary, unknown on Beacon Hill, very rare in the rest of the 

 area; Cretaceous, rare and scattered: Older Formations, not very 

 common. 138-224 days. Sea level-1,000 ft. 



2. L. repens (L.) Bart. In dry or sandy soil: Conn, to Fla., 

 Minn., Kan. and Tex. 



Conn. Reported from near New Haven, otherwise unknown. 

 N. Y. Common south of the moraine on L. I, and on S. I., local 



north of the moraine at Jamaica, L. I., and in the Bronx. 

 N. J. Throughout the state, except the pine-barrens, there rare. 

 Pa. Northampton, Bucks, Philadelphia and Delaware counties. 



Tertiary, common, but less common on Beacon Hill than else- 

 where: Cretaceous, common: Older Formations, scattered. 180- 

 224 days. About sea level. 



