280 Karl M. Wiegand and Arthur J. Eames 



d. Flowers 2-9, each 15-18 mm. long; leaflets conspicuously pinnately veined, 



strigose or glabrous, elliptic-ovate, mucronate; stipules broader, with sev- 

 eral teeth. 5. V. americana 

 c. Plant villous. 6. V . villosa 



1. V. angustifolia Reichard. (P '. sativa of Cayuga Fl.) Common Vetch. 

 A weed by roadsides and on banks, in rich gravelly soils ; frequent. July. 



Ball Hill, Danby; Connecticut Hill; n. of Enfield Glen; South Hill; C. U. 

 campus, near the Veterinary College; e. of McLean; n. of King Ferry; s. of Willets. 



Throughout the Eastern States. Naturalized from Eu. 



Extremely variable as to width and apex of leaves, passing to the following 

 variety. 



la. V. angustifolia Reichard, var. segetalis (Thuill.) Koch. 

 In situations similar to the preceding; occasional. 

 Roadside near Newfield station ; Six Mile Creek. 

 Range probably similar to that of the species. 



2. V. tetrasperma (L.) Moench. 



Gravelly calcareous shores ; rare. June. 



S. side of Taughannock Point, 1895 (K. M. W.), now abundant. 



E. Que. to Ont, southw. to Fla. and Miss. Naturalized from Eu. 



3. V. Cracca L. Wild Vetch. 



Fields and roadsides, in gravelly or sandy, not too acid, soils ; rare. June 

 10-July 15. 



Appearing as though introduced : "on the sand bank west of Mr. Howard Wil- 

 liams', since 1871" (D.) ; Thurston Ave., Ithaca; old field, n. side Taughannock 

 Gorge; roadside e. of Clyde; near the Poultry Building, C. U. campus. [More fre- 

 quent in Cortland Co.]. 



Newf. to Minn, and B. C, southw. to n. N. J., Ky., and Iowa. Naturalized from 

 Eurasia. Possibly native in the North. 



4. V. caroliniana Walt. Spring Vetch. 



Dry slopes in open woods, in clay and stony clay soils ; common. May 10-30. 



Abundant on South Hill and along the lake shore from Cayuga Heights northw. ; 

 absent on the gravels of the higher hills and in the McLean region. 



Ont. to Minn., southw. to Ga. and Kans. ; rare or absent in N. E. and on the 

 Coastal Plain. 



5. V. americana Muhl. Vetch. 



Damp alluvial clays and cliff talus mixed with clay; frequent. June 10-July 10. 



Mostly along the shores of Cayuga Lake and in the lake marshes : Renwick 

 Marsh ; near the Remington Salt Works ; Esty Glen ; n. of Union Springs ; Willets ; 

 and elsewhere. Not found away from the lake. 



N. Y. to Minn, and the Pacific coast, southw. to Va. and Kans., exclusive of the 

 Atlantic Coastal Plain. 



6. V. villosa Roth. Hairy or Winter Vetch. 



Roadsides, lawns, fields, and waste places, in various soils ; an occasional escape 

 from cultivation. June-Sept. 

 Native of Eurasia. 



17. Lathyrus (Tourn.) L. 



a. Leaflets 8-12, broad and large; flowers 10-25, purple. [L. venosus] 



a. Leaflets 4-8; flowers 2-8 (see also 3d a). 



