FABACEAE. 



Vol. II. 



15. Lespedeza leptostachya Engelm. Prairie 

 Iliish-clovLT. Fig. 2611. 



Lcspcdcza leptostachya Enyclm. ; A. (iray, Proc. Am. Acad. 

 12: 57. 1876. 



Erect, simple or branched, i-3 high, silvery-pubes- 

 cent with apprcssed hairs. Stipules subulate; petioles 

 shorter than the leaves; leatlets linear, I'-i J' long, i"-2" 

 wide; spikes slender, interruptedi and loosely flowered, 

 on peduncles equalling or exceeding the leaves ; corolla as 

 in the preceding species ; flowers all coinplete ; pod ovate, 

 pubescent, about i\" long, nearly equalling the calyx. 



Prairies, Illinois to Iowa, Wisconsin and Minnesota. 

 Aug.-Sept. 



16. Lespedeza striata (Thunb.) H. & A. 

 Japan Clover. Fig. 2612. 



Hedysarmn striatum Thunb. Fl. Jap. 2S9. 1784. 

 Lespedeza striata H. & A. Bot. Beechey 262. 1841. 



Annual, diffuse or ascending, branched, tufted, 

 sparingly appresscd-pubescent, 6'-i3' long. Stip- 

 ules ovate, acute or acuminate. i"-2" long; pe- 

 tioles much shorter than the leaves ; leaflets 

 oblong or oblong-obovate, 4"-9" long, l"-4" 

 wide, obtuse at the apex, narrowed at the base, 

 their margins usually sparingly ciliate ; flowers 

 1-3 together, both petaliferous and apetalous, 

 sessile or nearly so in the axils; corolla pink or 

 purple, about i" long; calyx-lobes ovate; pod 

 oval, acute, exceeding the calyx-lobes. 



In fields, Pennsylvania to Indiana, Missouri, Kan- 

 sas, Florida and Texas. Naturalized from eastern 

 Asia. Wild clover. Hoopkoop-plant. July-Aug. 



40. VICIA [Tourn.] L. Sp. PI. 734. 1753. 

 Climbing or trailing, herbaceous vines, \\ith pinnate tendril-bearing leaves, half-sagittate 

 or entire stipules, and axillary sessile or racemose, blue violet or yellowish flowers. Calyx- 

 tube somewhat oblique, obtuse at the base, its teeth about equal, or the two upper ones 

 slightly shorter or longer. Standard obovate or oblong, emarginate, clawed ; wings obliquely- 

 oblong, adherent to the shorter oblong curved keel. Stamens diadelphous (9 and i), or 

 monadelphous below ; anthers all alike. Ovary sessile or stipitate ; ovules 00 ; style very 

 slender, with a tuft or ring of hairs at its summit. Pod flat, dehiscent. 2-valved, continuous 

 between the round seeds. [The classical Latin name of the Vetch.] 



About 130 species of wide geographic distribution. In addition to the following, about 15 

 others occur in the southern and western parts of North America. Type species: Vicia sativa L. 

 Flowers racemed or spicate ; peduncles elongated. 

 Indigenous perennials. 



Spike-like racemes dense, i-sided, i5-40-tlowered. i. I'.Cracca. 



Racemes loose, i-20-fIowered. 



Flowers 7"-io" long. 



Leaflets elliptic, or ovate-ohlong. 



Leaflets narrowly linear: western. 

 Flowers 2"-$" long. 



Racemes 8-20-flowered : flowers 4' 



Racemes i-6-fiowered ; flowers 2"- 



5" long. 

 4" long. 



2. V. americana, 



3. V. sparsifolia. 



4. V. caroliniana. 



Leaflets 2-5 pairs, linear, or those of lower leaves oval or obovate. 5. f^. micrantha. 



Leaflets 4 or 5 pairs, all oval, elliptic or obovate. 6. V, ludoviciana. 

 Introduced annuals : flowers few. 2"-^" long. 



Pod glabrous, 3-6-seeded. 7. /'. letrasperma. 



Pod pubescent. 2-seeded. 8. \' hirsiita. 

 Flowers sessile or very nearly so, few, axillary. 

 Flowers i or 2 in the axils : annuals. 



Leaflets oblong, oval or obovate : flowers about i' long. 9. V. sati-'a. 



Leaflets, except of lower leaves, linear, or linear-oblong; flowers ^<J' long. 10. J^. atigiistifolia 



Flowers 2-6 in a short nearly sessile raceme; perennial. 11. J'. Scpiton. 



