54. Leguminosae 137 



28. Lespedeza Michx. — Bush-clover 

 I. Plants entirely herbaceous, erect, prostrate, or ascending. 



2. Perennials with subulate stipules, minute bracts, and narrow 

 calyx-lobes. 

 3. Corolla purple; flowers of two kinds, some without petals. 

 4. Flower-clusters on slender peduncles that are conspicuously 

 longer than the subtending leaves. 

 5. Stems trailing; inflorescence capitate or spicate. 



6. Stems glabrous or finely appressed-pubescent; .sandy 

 soil in woods, s. 111. June-Sept. Creeping Bush- 

 clover L. reprns (L.) Bart. 



6. Stems softly pubescent with spreading hairs; wooded 

 slopes and ridges, s. 111., extending northward to 

 Sangamon and Macon counties. July-Sept. Trailing 



Bush-clover L. procurnhens Michx. 



5. Stems erect, sparsely appressed-pubescent: inflorescence 

 loosely paniculate; in oak woods throughout the state. 



July-Sept L. violacea (L.) Pers. 



4. Flower-clusters sessile or nearly so. 



7. Leaflets densely velutinous beneath; woods, local; chiefly 



in the s. half of 111. Aug.-Sept 



L. stuvei Nutt. 



7. Leaflets glabrous, or strigose beneath. 



8. Leaflets oval; sandy soil in woods in the s. half of 

 the state. Aug.-Sept L. intermedia (Wats.) Britt. 



8. Leaflets linear; sandy soil in woods nearly throughout 



111. Aug.-Sept. Slender Bush-clover 



L. virginica (L.) Britt. 



3. Corolla white or yellowish white, with a purple spot on the 

 standard; flowers all alike. 

 9. Leaflets elliptical to suborbicular. 



10. Peduncles equalling the cylindrical dense spikes; leaves 

 from orbicular to oval ; sandy soil on wooded slopes 

 and ridges, local. Aug.-Sept L. hirta (L.) Homem. 



10. Peduncles usually shorter than the dense subglobose 

 heads; leaves elliptical; sandy soil along roads and 

 in open woods throughout 111. Aug.-Sept. What may 

 be a hybrid between this species and L. virginica {L. 

 simulata Mack. & Bush) has been collected in Craw- 

 ford Co. [L. longifolia DC] L. capitata Michx. 



9. Leaflets linear; spikt^ slender, loose; prairie soil, rare; 

 known in 111. from Cook, McHenry, and Winnebago 

 counties. Aug.-Sept L. leptostachya Engelm. 



2. Annuals with scarious ovate-lanceolate .stipules and bracts; 

 calyx-lobes as broad as long; flowers solitary or 2 or 3 in the 

 axils. 



