LEGUMINOS^. 85 



3. V. Cracca Linn. : stem branching ; leafets numerous, oblong, alternate 

 and opposite, mucronate, pubescent; stipules semisagittate, linear, nearly 

 entire; peduncles many-flowered, as long as or longer than the leaves; 

 racemes crowded, secund ; teeth of the calyx unequal ; upper ones very 

 short ; lower ones shorter than the tube ; styles hairy at the top ; legume 

 oblong, coriaceous, compressed, smooth. 



Woods and meadows. Can. to Penn. W. to Ken. June, July. %. — Stem 

 2 — 3 feet long, slender. Leafets 10 — 12 pairs-, an inch long, 1 — 3 lines wide. 

 Flowers 10 — 20 in a raceme, pale purple. Tufted Vetch. 



4. V. tetrasperma Loisel : smooth ; leafets 4 — 6, oblong ; stipules lance- 

 olate, semisagittate ; peduncles mostly 2-flowered ; legume oblong, smooth, 

 mostly 4-seeded. V. pusilla Mithl. Ervitm tetraspermum Linn. 



Fields, &c. Can. to Penn. May, June. (I)- — Stem 1 — 2 feet long, very 

 slender, 4-angled. Leafets half an inch long, rather obtuse, with a fine point. 

 Flowers white or bluish-white, very small, sometimes 3 or 4 together. 



Slender Vetch. 

 ** Flowers nearly sessile. 



5. V. sativa Linn. : leafets 6 — 12, ovate-oblong or linear-oblong, retuse, 

 mucronate, more or less pilose beneath ; stipules semisagittate, toothed, with 

 a dark spot beneath ; flowers mostly in pairs, subsessile ; calyx cylindric ; 

 segments linear-lanceolate, nearly equal ; style bearded at the top ; legume 

 compressed. 



Fields. Can. to Car. June. ®. — Stem 1 — 2 feet high, erect or decumbent. 

 Flowers half an inch long, pale purple. A very variable species. Introduced 

 from Europe. Common Vetch. 



20. ERVUM. Lin7i.—TeiTe. • 



(From the Celtic erw, a ploughed field, of which it is the pest. Hook. Br. Fl.) 



Calyx 5 -cleft ; segments linear, acute, nearly equalling the 

 corolla. Stigma glabrous. Legume oblong, 2 — 4-seeded. 



E. hirsutum Linn. :. leafets linear or linear-oblong, truncate or retuse, 

 mucronate ; stipules semisagittate, narrow ; peduncles 3 — 6-flowered, about 

 as long as the leaves ; segments of the calyx linear-lanceolate, equal, longer 

 than the tube ; legume oblong, compressed, hairy, finely reticulate ; seeds 

 globose, variegated. Vicia Mitchelli Raf. 



Fields. N. Y. to Car. May, June. (Ti—Stem 2—3 feet long, much branched, 

 and diffuse. Leafets 8 — ^20, about half an inch long and a line or two wide- 

 Flowers very small, bluish-white. Introduced ? Hairy Tare. 



21. LATHYRUS. Linn.—YeicYAmg. 

 (From \aQvpoi ; a leguminous plant of Theophrastus.) 

 Calyx campanulate, 5-cleft ; two upper lobes shorter. Corolla 

 papilionaceous. Stamens diadelphous. Style flat, bent at a 

 right angle with the ovary, dilated at the summit, villous or pu- 

 bescent on the upper side. Legume oblong, many-seeded, 

 2-valved, 1 -celled. Seeds globose or angled. 



1 . L. maritimus Big. : smooth ; stem stout, at length decumbent ; leafets 

 4 — 6 pairs, oval or slightly obovate; stipules cordate-hastate, nearly as 



