40 PAPILIONACEAE. 



f t f f Pod sessile or nearly so; joints m und i sK-trlanyular. 



D. canadense DC. Stem 2-8 feet high, pubescent: leaves petioled, the 

 upper nearly sessile; stipules linear-lanceolate, persistent; leaflets, oblong or 

 ovate-lanceolate, obtuse, glabrous or roughish above, appressed pubescent be- 

 neath; flowers showy, larger than in any other species; pods numerous; joints 

 triangular, back straight or convex. Upland woods: July-September; fre- 

 quent. ( ill. cawtdcnse ( L. ) Kuntze.) 



* * * Leaves sessile or nearly so. 



D. sessilifolium T. & G. Stem 2-4 feet high, pubescent; leaflets thickish, 

 linear or linear-oblong, obtuse at each end, nearly glabrous above, pubescent 

 beneath; flowers small; panicle with long branches; pods with 1-3 obliquely 

 obovate hispid joints. Prairies, infrequent; Fayette county ( Fink ); copses, 

 abundant, Story county ( Hitchcock); July-September. ( it. sc-s'difolla (Torr.) 

 Kuntze. ) 



LESPEDEZA Mx. Bush Clover. Perennial herbs, with pinnately 3-foli- 

 ate leaves, small stipules, and small flowers in axillary clusters, heads or 

 panicles. Calyx 5-cleft, the lobes about equal. Stamens diadelphous, 9 and 1; 

 anthers equal. Pod short, oval or ovoid, reticulated. 



L. capitata Mx. Stem 2-4 feet high, hairy; leaves short-petioled; leaflets 

 oblong or oval, smooth above, hairy or woolly below; flowers in short globu- 

 lar heads, on peduncles shorter than the leaves; pod shorter than the calyx, 

 pubescent. Prairies; July-August; common. 



L. leptostachya Engelm. Stem 1-3 feet high, simple or branched, silvery- 

 pubescent; leaflets linear to narrowly oblong; spikes slender, loosely flowered, 

 peduncles equalling or exceeding the leaves; pod ovate, pubescent, about e- 

 qualling the calyx. Prairies; August-September; Emmet county, reported 

 from Winneshiek, Fayette, Webster, Floyd, Story, and Lyon counties. 



L.Violacea ( L. ) Pers. Stems sparingly pubescent, clustered and mostly 

 spreading; petioles slender, as long as the leaflets; leaflets ovate or elliptical, 

 smooth above, minutely pubescent beneath; flowers several, in a loose panicle, 

 violet-purple; pod ovate, nearly glabrous. Dry soil; August-September; fre- 

 quent; Scott, Muscatine, Henry, Lee, Johnson, Van P.uren, Appanoose, Deca- 

 tur, Ringgold, and Page counties. 



L. reticulata Pers. Stem erect, simple or branched; leaflets linear or lin- 

 ear-oblong, glabrate or pubescent beneath; flowers in dense axillary clusters, 

 violet-purple; pod ovate, acute, glabrous or somewhat pubescent. Dry soil, 

 woods; August; infrequent; Muscatine and Decatur counties. (L. Virginia! ( L.) 

 Britton ). 



VICIA L. Trailing or climbing herbs, with pinnate leaves terminating in 

 tendrils, semi-sagittate stipules, and axillary pedunculate flowers. Calyx 

 campanulate, 5-toothed, teeth nearly equal. Wings cohering to the middle 

 of the keel. Stamens diadelphous. 9 and 1. Style slender, bent at right an- 

 gles to the ovary, villous at the apex. Pod 2-valved, flat, 2-several-seeded. 

 * Perennial; peduncle elongated, many-flowered. 



V. americana Muhl. Stem glabrous, 2-3 feet long; stipules triangular- 

 ovate, sharply dentate; leaflets 8-14, elliptic, ovate or oblong, obtuse, slightly 

 mucronate: corolla purplish, one-half inch long; peduncles 4-8-flowered. 

 Rich soil, banks and woods; May-June; Winneshiek, Allamakee, Fayette, 

 Linn, Story, .Shelby, Cerro Gordo, Emmet, Lyon, and Pottawattomie counties. 

 Some forms approach the variety truneata ( Nutt.) Brewer, which has the 

 leaves truncate and dentate at the apex. 



