78 LEGUMINOS^I. 



1. V. Caroliniana, Walt. Carolina Vetch. 



Nearly smooth ; leaflets 8 to 10, elliptical-lanceolate, obtuse, scarcly mucronate ; 

 peduncles loosely flowered, as long or longer than the leaves; flmvers distant; 

 calyx teeth very short. 



Borders of woods and along fences. May, June. Per. Stem 2 to 4 feet lose, 

 climbing. Leaflets % inch long, y s to 14 wide. Flowers small, white or pale-blue 

 Standard black at the tip. Legume oblong. 



2. V. Americana, Muhl. American Vetch. 



Smooth; Uajhts 10 to 14, elliptical or ovate-oblong, very obtuse, many- veined ; 

 ttiptdes semi-sagittate, deeply-toothed ; peduncles 4 to 8-flowered, shorter than the 

 leaves. 



Moist thickets and woods. June. Per. Stem 1 to 3 feet long, slender, some- 

 what 4-angled. Leaflets 1 inch long, nearly % as wide. Flowers purplish-blue, % 

 inch long. Style very hairy at the summit. Legumes oblong-linear, compressed 

 reticulated. 



3. V. Cracca, L. Tufted Vetch. 



Downy-pubescent; stem branching; leaflets 10 to 20, oblong-lanceolate, strongly 

 mucronate; stipules semi-sagittate, linear, nearly entire; peduncles densely many, 

 flowered; calyx teeth shorter than the tube; style hairy at the top. 



Border of fields, woods and meadows. June, Julv. Per. Stem 2 to 8 feet long, 

 slender, square. Leaflets 14 to % inch long. % inch wide. Flowers 10 to 20 in a 

 long, dense, one-sided raceme pale-purple. Legume oblong, compressed, coriaceous 

 smooth. 



* Annual. Naturalized. 



4. V. tetrasperma, L. Slender Vetch. 



Smooth; leaflets 8 to 12, linear-oblong, obtuse ; stipules lanceolate, semi-sagittate j 

 peduncles mostly 2-flowered ; calyx teeth unequal ; legume oblong, smooth, mostly 

 4-flceded. 



Fields and banks of streams; introduced. May, June. Stems almost filiform 1 

 to 2 feet long. Leaflets % incn long, 1 line wide, acute or obtuse. Floicers very 

 small, white, or bluish-white, sometimes 3 or 4 together. 



5. V. sativa, L. Common Vetch or Tare. 



Somewhat pubescent: stem simple; leaflets 10 to 14, ovate-oblong or linear-oblong, 

 notched and mucronate at the apex; calyx-teeth equal; legume linear, several- 

 seeded. 



Cultivated fields and waste places; introduced. June. Stem 1 to 2 feet high, erect 

 or decumbent. Leaflets % to 1 inch long, ^ wide. Flowers % inch long, pale-purple. 

 Legume 1 to 2 inches long, erect, roundish, reticulated, smooth. 



6. V. hirsuta, Koch. Hairy Vetch. 



Leaflets 8 to 20, linear, or linear-oblong, truncate, mucronate : stipules semi-sagit- 

 tate, narrow; peduncles 3 to 6-flowered, shorter than the leaves; legumes oblong, 

 hairy, 2-secded. 



A creeping weed in cultivated fields; introduced. May. June. Stem 2 to 3 feet 

 long, much branched and diffused. Leaflets about ^ inch long, very narrow 

 Flowers very small, bluish-white. Legumes short, with roundish compressed 

 brown seeds. 



2. LATHYRUS. Linn. Vetchling, 



Gr. Lathuros, a leguminous plant of Theophrastus. 



Calyx 5-cleft, the upper teeth shorter papilionaceous. 

 Stamens diadelphous. Style flattish ; not grooved above. 



