FABACEAE. 



Vol. II. 



15. Lespedeza leptostachya Engelm. Prairie 

 Bush-clover. Fig. 261 1. 



Lespede::a leptostachya Engelm. ; A. Gray, Proc. Am. Acad. 

 12: 57. 1876. 



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

 cent with appressed hairs. Stipules subulate ; petioles 

 shorter than the leaves; leaflets linear, I'-ii' long, i"-2" 

 wide ; spikes slender, interrupted and loosely flowered, 

 on peduncles equalling or exceeding the leaves ; corolla as 

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

 pubescent, about iJ" long, nearly equalling the calyx. 



Prairies, Illinois to Iowa, Wisconsin and Minnesota. 

 Aug.- Sept. 



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

 Japan Clover. Fig. 2612. 



Hedysarum striatum Thunb. Fl. Jap. 289. 1784. 

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



Annual, diffuse or ascending, branched, tufted, 

 sparingly appressed-pubescent, 6'-i2i' 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, i"-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 

 .^sia. Wild clover. Hoopkoop-plant. July-Aug. 



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

 Climbing or trailing, herbaceous vines, with 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, 15-40-flowered. i. 



Racemes loose, i-20-ffowered. 

 Flowers 7"-io" long. 



Leaflets elliptic, or ovate-oblong. 2. 



Leaflets narrowly linear ; western. 3. 



Flowers 2"-s" long. 



Racemes 8-20-ffowered ; flowers 4"-5" long. 4. 



Racemes i-6-flowered ; flowers 2"-^" long. 



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

 Leaflets 4 or 5 pairs, all oval, elliptic or obovate. 

 Introduced annuals ; flowers few, 2"-^" long. 

 Pod glabrous. 3-6-seeded. 

 Pod pubescent, 2-seeded. 

 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. sativa. 



Leaflets, except of lower leaves, linear, or linear-oblong; flowers J4' long. 10. V. angustifolia 

 Flowers 2-6 in a short nearly sessile raceme; perennial. 11. V. Sepium. 



V. Cracca. 



V. americana. 

 V, sparsifolia. 



V. caroliniana. 



J', micrantha. 



6. V. liidoviciana. 



7. V. tetrasperma. 



8. V. Iiirsiita. 



