37b. Some or all of the stems erect; heads arising from the leafy stems (flowers white or pink) --38. 38a. Plants with long basal runners; flowers 10-13 mm. long (2-3 dm. high) =Buffalo Clover, Trifolium stoloniferum.= 38b. Basal runners none; flowers 6-8 mm. long (3-8 dm. high) =Alsike Clover, Trifolium hybridum.= 39a. Prostrate; leaflets broadly ovate; flowers 3-10 in a cluster --10a. 39b. Erect; leaflets broadest 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.