LEGUMINOS^. (pulse FAMILY.) 103 



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

 waste places; both the common form and the var. ji.iigitstii'6lia, with longer 

 and narrow leaflets. (Adv. from Eu.) 



* * Annual : peduncles elongated : /lowers small. (Species of Ervlun, L.} 



2. V. TETRASPERMA, L. Peduncles 1-2-Jlowered; leaflets 4-6 pairs, 

 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. HiBSijTA, Koch. Peduncles Z-&-flowered; leaflets 6-8 pairs, trun- 

 cate; calyx-teeth equal; pods oblong, ^-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. Cr&cca, L. Downy-pubescent; leaflets 20-24, obUmg-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, J' long, one-sided in the spike, reflexed. (Eu.) 



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

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

 River-banks, &c. May. — Elowers more scattered than in No. 4, whitish, tha 

 keel tipped with blue. 



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

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

 New York to Kentucky and northward. June. — Flowers purplish-blue, I' 

 long. 



21. lAtHTRUS, L. Vbtchlikg. Everlasting Pea. 



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

 men). Othcnvise nearly as in Vicia. {AaBvpos, a leguminous plant of Theo- 

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



1. li. maritimus, Bigelow. (Beach Fea.) 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 noi"thward, and shore of the Great Lakes. June - Aug. — Flowers large, 

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



2. li. venosns, Muhl. Stem climbing (2° - 5° high) ; leaflets 5-7 pairs, 

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

 der, half arrow-shaped; peduncles many-flowered; corolla purple. — Shady banks, 

 Michigan, Wisconsin, and southward. June. 



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

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

 as large as the leaflets; peduncles 7-10-fiowered; coroUa yellouHsh-white. — Hill- 

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



4. Ii. palustris, L. (Marsh Vetchling.) Stem slender (10-2° 

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



