Jones: Flora of Illinois, 84. Leguminosae 167 



15. Leaflets scabrous, softly pubescent, pale green and reticulate 

 beneath, 2.5-5 cm. long; stem puberulent; corolla 5-6 mm. 

 long; sandy soil in open woods, chiefly in w. and s. 111. 



Aug.-Sept D. rigidum (Ell.) DC. 



15. Leaflets not scabrous, 1-2.5 cm. long, glaucous beneath; 

 corolla 2-4 mm. long. 

 16. Stem and leaves glabrous; wooded slopes and ridges, 

 local; known from Peoria, Menard, and Macoupin 



counties. July-Sept D. marilandicum (L.) DC. 



16. Stem pubescent; leaves more or less pubescent; open 

 woods in the s. half of the state. July-Sept. [D. obtu- 



sum (Muhl.) DC; M. ohtusa (Muhl.) Vail] 



D. ciliare DC. 



25. Lespedeza Michx. — Bush-clover 



1. Perennials with subulate stipules, minute bracts, and narrow calyx-lobes. 

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



3. Flower-clusters on slender peduncles that are conspicuously longer than 

 the subtending leaves. 

 4. Stems trailing; inflorescence capitate or spicate. 



5. Stems glabrous or finely appressed-pubescent; sandy soil in woods, 



local. June-Sept. Creeping Bush-clover L. repens (L.) Bart. 



5. Stems softly pubescent with spreading hairs; >vooded slopes and 

 ridges, s. 111., extending northw. to Perry and Wabash counties. 



July-Sept. Trailing Bush-clover L. procumbens Michx. 



4. Stems erect, sparsely appressed-pubescent; inflorescence loosely pa- 

 niculate; in oak woods throughout the state exrept in the n. coun- 

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



3. Flower-clusters sessile or nearly so. 



6. Leaflets densely velutinous beneath; woods, local. Aug.-Sept 



L. stuvei Nutt. 



6. Leaflets glabrous, or strigose beneath. 



7. Leaflets oval; sandy soil in woods, s. 111. Aug.-Sept 



L. intermedia (Wats.) Britt. 



7. Leaflets linear; sandy soil in woods throughout 111., except the n.w. 



counties. Aug.-Sept. Slender Bush-clover 



L. virginica (L.) Britt. 



2. Corolla white or yellowish white, with a purple spot on the standard; 

 flowers all alike. 

 8. Leaflets oblong or oval to suborbicular. 



9. Stem villous; peduncles conspicuously longer than the subtending 

 leaves; spikes cylindrical, dense, 1-3.5 cm. long; sandy soil on 

 wooded slopes and ridges, local; known in 111. from Lake, Cook, 



Jackson, Union, and Pope counties. Aug.-Sept 



L. hirta (L.) Hornem. 



9. Stem tomentose; peduncles not longer than the subtending leaves; 

 spikes subglobose; sandy soil along roads and in open woods 

 throughout 111. Aug.-Sept L. capitata Michx. 



