leguminosa:. (ruLSE family.) 189 



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



2. V. TiiTHASi'ERMA, L. P<t/«Hr7f5 1 - 2-77oi/;«erf; Icaflcts 4 - 6 paiis, liiiL'.ir- 

 oblong, ol)tiisc ; calyx-tccth unequal ; corolla whitish ; jmls narrowly olAony, 4- 

 secded, smooth. — Waste or open places, near the coast. (Nat. from Eu.) 



3. V. iiinst'TA, Koch. Peduncles 3 - 6 flowered ; leaflets C-8 pairs, trun- 

 cate; calyx-teeth ccpial ; corolla bluish; pods oblong, 2-seeded, Itairj. — Massa- 

 chusetts Jo Virginia. (Nat. from Eu.) 



* * * Perennial: peduncles elongated ; calijx-leitli unerptul : pod several-seeded. 



4. V. Cracca, I>. Dowuy-puhescent ; leajLts 20 - 24, oblong -lanceolate, 

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

 tube. — llorders of thickets, New England to Kentucky and northward: rather 

 rare. July. — Flowers blue, turning purple, (i" lung, one-sided in the spike, 

 reflexed. (Eu.) 



5. V. Cai'Olini^na, Walt. Nearly smooth; leaflets 8-24, oblong, obtuse, 

 scarcely mucronate ; piduncles loosfly flowered ; caly.x-teeth very short. — River- 

 banks, &c. May. — Flowers small, more scattered than in the preceding, 

 whitish, the keel tipped with blue. 



6. V. AmeX'ickna, Muhl. Glabrous; leaflets 10-14, elliptical or ovate- 

 oblong, very obtuse, many-veined; peduncles 4-8floivered. — Moist soil, New 

 York to Kcntuiky and northward. June. — Flowers purplish, 8" long. 



23. LATHYRXJS, L. Vetchlixg. Everlasting Pea. 



Style flattish, dilated and tlattish (not grooved) al)ove, hairy alung the inner 

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

 apex. Otherwise nearly as in Vicia. (AdSvpos, a leguminous plant of Theo- 

 phrastus.) — Our sj)ccies arc perennial and mostly smooth plants. 



1. L. maritimus, 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 G- 10-flowercd. — Sea-coast, from New 

 Jersey northward, and shore of the (ireat Lakes. June -Aug. — Flowers 

 large, purjile. Leaflets very veiny, as also in the other species. (Eu.^ 



2. L. venbsus, Muhl. Stem climbing (20-5° high); leiiflets 5-7 pairs, 

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

 der, half arrow-shaped, rarely larger and broader; peduncles many-flowered ; corolla 

 purple. — Shady banks, Pcnn. to Wiscon.^in. and southward. June. 



3. L. OChl'Oleucus, Hook. Stem slender (IO-.30 high); leaflets 3-4 

 pairs, ovate or oval, smooth, glaucous, thin ; stipules hid/ heart-shaped, a f>out hdf 

 as large as the leaflets; peduncles 7 - 10-flowered ; corolht yelJnwish-wh ite, simxWcr 

 than in the last.— Hillsides, W. Vermont to Pennsylvania, Wisconsin, and 

 northward. July. 



4. L. pallistris, L. (Maush VKTriii.ixc.) Stem slender (10-2° hi-h), 

 often winged-margined; leaflets 2-4 pairs, lanceolate, linear, or narrowly ol>- 

 long, niucrouate-poiuted ; stljinhs small, laiUrolat,; half arrow-sIiaiR'd, sharp- 

 pointed at i>otli ends; peduncles 3 - 5-flowereil ; corolla blue-purple. — Moi^t 

 places, N. England to IVnn.. Illinois, and northward. July. (Eu.) 



Vur, myrtifblius. Taller, climbing 2° - 4° liigh ; leaflets oblong or ovate- 



