Ordeb 46.— LEGUMINOSjE. 305 



pinnate, with several pairs of leaflets, and a branching tendril. Peduncles 

 axillary. 



* Leaflets aliout 4 (3 to T). Annunl Nos. 1, S 



• LeaHets about 10 (8 to 24). — Pedunolo many (5 — 20)-flowered Perennial Nos. 3—5 



— Peduncle few (l--5)-flowered Nos. 6, 7 



1 V. tetrasperma Loisel. Fed. 1 to 1-fiowerei, in fl. shorier (infr. longer) than 

 the hs. ; leg. smooth, 4-seeded ; Ifts. 4 to 6, small, linear, obtuse ; slip, lanceolate, 

 somi-sagittato. — Slender and delicate plants, banks of streams, &c.. Can. to 

 Penn. Sts. almost filiform, 1 to 2f long. Lfts. 5 to 10" by 1", aouto or obtuse. 

 Fls. very small, bluish-white, on filiform peduncles. Leg. 4 to 6" long, 4- some- 

 times 5-36eded. Jl. (V. pusilla Mulil. Ervum, L.) 



2 v. acutifolia Ell. Lfts. 3 to 6, linear, acute ; stip. lanoe-linear ; tendrils mostly 

 simple ; roc. 3 to ^-flowered, longer than the leaves. — Ga. and Ma. Tery slender, 

 glabrous. St. 3 to 6f long, climbing. Lfl;s. 6 to 12" long, 1" wide. Fls. small 

 (3" long), bluish white. Calyx teeth shorter than tube. Pods 1' long, about 

 S-seeded (4 to 10). 



3 V. Americana Muhl. Fed. 4 to 8-flowered, shorter than the Ivs. ; stip. semi- 

 sagittate, deeply dentate; lfts. 10 to 14, elliptic-lanceolate, obtuse, mucronate, veined, 

 somewhat alternate ; leg. oblong-linear, compressed, reticulated. — N. T. "W". to the 

 E. Mts. Sts. slender, 1 to 3f long. Lfi;s. 1' by 6", subsessile. Fls: blue or pur- 

 ple. Lower calyx teeth broad-lanceolate, much longer than the 2 upper. Style 

 very hairy at the summit. May. 



4 V. Caroliniana "Walt. Ped. 6 to 10 or 12-flowered, rather shorter than the 

 leaves ; fls. loose ; teeth of the calyx shorter than the tube, the two upper very 

 short; sty. hairy at the summit; stip. lance-linear, entire; lfts. 8 to 12, linear-ob- 

 long or linear, smoothish ; leg. not reticulated, oblong. — "Woods and river banks. 

 A slender climber, 4 to 6f long. Lfts. 6 to 12" by 1 to 3", mostly alternate. Fls. 

 3" long, pale blue, the banner tipped with deep purple. May. 



5 V. Cracca L. Tupted Tetoh. Pis. imbricated, 12 to 20 or more in the ra- 

 ceme; lfts. 12 to 24, oblong, puterulent ; stip. semi-sagittate, linear-subulate, entire. — 

 A slender climber, 2 to 3f long, about fences, hedges, thickets, &c., lat. 39° to 

 Can. St. square, downy. Lvs. of many pairs of downy, mucronate lfts., with a 

 branched tendril at the end of the principal stalk. Lfts. 6 to 8" by 2 to 3", peti- 

 olulate. ■ Pis. blue and purple, in a long, dense, one-sided raceme. Jl. 



6 V. sativa L. Tbtch. Tabes. Fls. solitary, or in pairs, subsessile; lfts. 10 

 to 12, oblong-obovate, often linear, retuae, mucronate; stip. semisagittate, subden- 

 tate, dotted ; leg. erect, roundish, reticulated, smooth.— (^A slender climbing plant, 

 found in cultivated fields, introduced from Europe. St. decumbent or cMmbing, 

 2 to 3f long. Lfts. 8 to 12" by 1 to 4'', lower ones near the base of the petiole, 

 pis. pale purple, half as long as the leaves. Leg. 1 to 2' long. Jn. § 



7 V. hirsiita Koch. Lfts. linear, truncate, mucronate; stip. semisagittate, nar- 

 row ; ped. 3 to 6-flowered, shorter than leaves ; leg. hirsute, 2-seeded. — A creeping 

 weed in cultivated fields, N. T. to S. Car. St. very slender, 1 to 3f long. Lfts. 

 8 to 20, 4 to 8" long, hardly 1" wide, broadest above. Ped. axillary, 3 to 6 flow- 

 ered. Cal. kegm., rather shorter than the bluish white corolla. Leg. short, with 

 roundish, compressed brown seeds. Jn. § f (Ervum, L.) 



V. miorantha Nutt , with the fls. minute and solitary on the peduncle, and 

 V. Ludovioiana Nutt. (V. Leavenworthii T. & G., is the same plant with a 

 more slender habit) sent from W. La. (Hale) have not yet, to my knowledge, been 

 found East of the Miss. Elver. 



17. ZOR'NIA, Gmel. (For John Zorne, M.D., of Bavaria.) Calyx 

 bilabiate, upper lip obtuse, emarginate, lower 3-cleft ; corolla perigy- 

 nous, vexillum orbicular, with the sides revolute; stamens monadel- 

 phous, the alternate anthers different ; legume compressed, of 2 to 5 

 roundish joints. — Herbs with palmately 2 to 4-foliate lvs. and sagittate 

 stip., -which are enlarged above and supply the place of bracts. (Fig. 184.) 

 Z. tetraphy-Ua Mx. Lfts. 4; stip. or bracts oval, acute; leg. aculeate, about 



's-iointed. — A plant of many singular marks, N. Car. to Pla, and Tex. Sts. pros. 



20 



