adest near the middle; flowers numerous (5-12
dm. high; flowers yellowish-white, late summer) (Bush Clover) --40.

40a. Leaflets less than twice as long as broad
=Bush Clover, Lespedeza hirta.=

40b. Leaflets more than twice as long as broad --41.

41a. Leaflets linear, 5 mm. wide or less; heads with obvious peduncles
=Bush Clover, Lespedeza angustifolia.=

41b. Leaflets narrowly elliptical, the principal ones more than 5 mm.
wide; heads sessile or nearly so
=Bush Clover, Lespedeza capitata.=

42a. Leaflets finely toothed --43.

42b. Leaflets entire --44.

43a. Flowers violet or blue (3-6 dm. high; summer)
=Alfalfa, Medicago sativa.=

43b. Flowers yellow (1-2 m. high; summer)
=Yellow Sweet Clover, Melilotus officinalis.=

43c. Flowers white (1-3 m. high; summer)
=White Sweet Clover, Melilotus alba.=

44a. Flowers yellow (5-10 dm. high; summer)
=Wild Indigo, Baptisia tinctoria.=

44b. Flowers white, the leaflets all from the same point (5-10 dm.
high; summer) =Wild Indigo, Baptisia leucantha.=

44c. Flowers blue, purple, or pink (rarely white, and then the
terminal leaflet stalked) --45.

45a. Racemes arising from the base of the plant, leafless (4-8 dm. high;
summer) =Tick Trefoil, Desmodium nudiflorum.=

45b. Racemes terminal or a few of them axillary; leaflets generally
more than 3 cm. long; pod (usually to be seen at the base of the
raceme) transversely segmented into 2 or more joints (summer)
(Tick Trefoil; the genus Desmodium. Pods are usually necessary for
satisfactory identification) --46.

45c. Racemes short, loose, chiefly axillary; leaflets generally less
than 3 cm. long; the short ovate or ovoid pod not transversely
jointed (5-10 dm. high; flowers in summer) (Bush Clover; the genus
Lespedeza. Reference to the Manual is recommended) --58.

46a. Leaves clustered near the summit of the stem (4-12 dm. high)
=Tick Trefoil, Desmodium grandiflorum.=

46b. Leaves scattered on the stem --47.

47a. Plants prostrate; racemes panicled; leaflets nearly circular