LEGUMINOS^E. (PULSE FAMILY.) 143 



* Annual ; flowers 1 or 2 in the axils, nearly sessile, large, violet-purple. 



V. SATIVA, L. (COMMON VETCH or TARE.) Somewhat pubescent ; stem 

 simple ; leaflets 5-7 pairs, varying from obovate-oblong to linear, notched 

 and mucronate at the apex ; pod linear, several-seeded. Cultivated fields and 

 waste places, N. Eng. to N. J. and southward, west to Mich, and Minn. 

 Var. ANGUSTIF6LIA, Seringe, has longer and narrow leaflets. (Adv. from Eu.) 



* * Annual, slender ; peduncles elongated ; flowers small. 



V. TETRASPERMA, L. Peduncles \-2-flowered; leaflets 4 - 6 pairs, linear- 

 oblong, obtuse ; calyx-teeth unequal; corolla whitish ; pods narrow, 4-seeded, 

 smooth. Waste places, near the coast, N. Scotia to N. J. (Nat. from Eu.) 



V. HiRstfTA, Koch. Peduncles 3 - ^-flowered ; leaflets 6-8 pairs, truncate ; 

 calyx-teeth equal; corolla bluish; pods oblong, ^.-seeded, hairy. N. Bruns- 

 wick to Mass, and Va. (Nat. from Eu.) 



* * * Perennial; peduncles elongated ; calyx-teeth unequal ; pod several-seeded . 



1. V. Cracca, L. Downy-pubescent; leaflets 20-24, oblong -lanceolate, 

 strongly mucronate ; spikes densely many-flowered, 1-sided ; flowers blue, turn- 

 ing purple, 6" long, reflexed ; calyx-teeth shorter than the tube. Borders of 

 thickets, Newf. to N. J., west to Ky., Iowa, and Minn. (Eu.) 



2. V. Caroliniana, Walt. Nearly smooth ; leaflets 8 - 24, oblong, obtuse, 

 scarcely mucronate ; peduncles loosely -flowered ; flow r ers small, more scattered 

 than in the preceding, whitish, the keel tipped with blue ; calyx-teeth very 

 short. River-banks, Out. and N. Y. to Ga., west to Minn, and Kan 



3. V. Americana, Muhl. Glabrous; leaflets 10-14, elliptical or ovate- 

 oblong, very obtuse, many-veined; peduncles 4 - %-floicered ; flowers purplish 

 ($" long). Moist soil, N. Y. and N. J., to Kan., Minn., and westward. Var. 

 LIXEARIS, Watson, a low form with linear leaflets, occurs in Kan. and Neb*, 

 and is common westward. 



31. LATHYRUS, Tourn. VETCHLING. EVERLASTING PEA. 



Style flattish, dilated and flattish (not grooved) above, hairy along the inner 

 side (next the free stamen). Sheath of the filaments scarcely oblique at the 

 apex. Otherwise nearly as in Vicia. Our species are perennial and mostly 

 smooth plants, the rhachis of the leaves in some not produced into a tendril. 

 (Ad6vpos, a leguminous plant of Theophrastus.) 



* Tendrils present ; stipules large and broad ; leaflets 3-5 pairs. 



1. L. maritimus, Bigelow. (BEACH PEA.) Stout (1 high or more), 

 stipules broadly ovate and halberd-shaped, nearly as large as the leaflets, the 

 lower lobe larger and usually coarsely toothed ; leaflets thick, ovate-oblong 

 (i -2' long) ; peduncles a little shorter thai, the leaves, 6 - 10-flowered, flow- 

 ers large (9" long), purple. Seashore from N. J. and Oregon to the Arctic 

 Sea; also on the Great Lakes. (Eu.) 



2. L. Ochroleucus, Hook. Stem slender (1 - 3 high) ; stipules semi- 

 cordate, half as large as the thin ovate leaflets ; peduncles 7 - 10-flowered ; flow- 

 ers smaller, yellowish-white. Hillsides, N. Eng. to Minn., Iowa, and westward 



* # Tendrils present; stipules narrow, semi-sagittate, acuminate. 

 i- flowers purple ; leaflets several pairs 



3. L. ven6sus, Muhl. Stout, climbing, usually somewhat downy ; stip- 

 ules very small and mostly slender j leaflets 4-6 pairs, oblong ovate, mostly 



