LEGUMINOS^E. 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. 1\.. Stem 

 J 3 feet long, slender. Leafets 10 12 pairs, an inch long, 1 3 lines wide. 

 Fivwers 10 20 in a raceme, pale purple. Tufted Vetch. 



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

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

 mostly 4-seeded. V. pusilla Muhl. Ervum tetraspermum Linn. 



Fields, &e. Can. to Penn. May, June. (1). 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. 

 ** Mowers 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. Linn. Tare. 

 (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 us 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. (T).Stem 23 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. Vetchling. 

 (From \advpof ; 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. 



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

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



