LEGUMINOS^E. (PULSE FAMILY.) 103 



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

 waste places ; both the common form and the var. ANGUSTiF6.LiA, with longer 

 and narrow leaflets. (Adv. from Eu.) 



* * Annual : peduncles elongated : flowers small. (Species of Ervum, L.) 



2. V. TETRASPERMA, L. Peduncles 1 - 2-flowered ; leaflets 4-6 pair . 

 linear-oblong, obtuse ; calyx-teeth unequal ; pods narrowly oblong, 4-seeded, smooth,' 



Waste or open places, near the coast. An insignificant plant, 6' -12' high, 

 with whitish flowers. (Nat. from Eu.) 



3. V. HiRstTA, Koch. Peduncles 3 - 6-floivered ; leaflets 6-8 pairs, trun- 

 cate ; calyx -teeth equal ; pods oblong, 2-seeded, hairy. (Ervum hirsutum, L.) 

 Massachusetts to Virginia. A slender straggling plant, with small purplish- 

 blue flowers. (Nat. from Eu.) 



# # # Perennial : peduncles elongated ; calyx-teeth very unequal : pod several-seeded. 



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

 strongly mucronate ; peduncles densely many-flowered ; calyx-teeth shorter than the 

 tube. Borders of thickets, New England to Kentucky and northward. July. 



Flowers blue, turning purple, ' long, one-sided in the spike, reflexed. (Eu.) 



5. V. Caroliliiana, Walt. Nearly smooth; leaflets 8-12, oblong, ob- 

 tuse, scarcely mucronate ; peduncles loosely flowered ; calyx-teeth very short. 

 River-banks, c. May. Flowers more scattered than in No. 4, whitish, the 

 keel tipped with blue. 



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

 oblong, very obtuse, many-veined ; peduncles 4 - 8-flowered. Moist thickets, 

 New York to Kentucky and northward. June. Flowers purplish-blue, | 

 long. 



21. LiATHYRUS, L. VETCHLING. EVERLASTING PEA. 



Style flattish, not grooved above, hairy along the inner side (next the free sta- 

 men). Otherwise nearly as in Vicia. (Adtfupos, a leguminous plant of Theo- 

 phrastus.) Our wild species are perennial and mostly smooth plants. 



1. L.. mai'itimus, Bigelow. (BEACH PEA.) Stem stout (1 high); 

 leaflets 4-8 pairs, crowded, oval or obovate; stipules broadly halberd-shaped, 

 nearly as large as the leaflets; peduncles 6 - 10-flowered. Sea-coast, from New- 

 Jersey northward, and shore of the Great Lakes. June -Aug. Flowers large, 

 purple. Leaflets very veiny, as also are those of the other species. (Eu.) 



2. L.. vcnosus, Muhl. Stem climbing (2 -5 high) ; leaflets 5-7 pains, 

 scattered, oblong-ovate, often downy beneath ; stipules very tmaU and usually slen- 

 der, half arrow-shaped; peduncles many -flower ed ; corolla purple. Shady banks, 

 Michigan, Wisconsin, and southward. June. 



3. L,. ochroleilCUS, Hook. Stem slender (l-3 high); leaflets 3-4 

 paii-s, ovate or oval, smooth, glaucous, thin ; stipules half heart-shaped, about half 

 as large as the leaflets; peduncles 7 -10-flowered ; corolla yellowish-white. Hill- 

 sides, W. Vermont to Penn., and westward and northward. July. 



4. L,. palustris, L. (MARSH VETCHLING.) Stem slender (l-2 

 high), often wing-margined; leaflets 2-4 pairs, lanceolate, linear, or narrowlj 



