98 LEQDMINOSiE. (PDLSE FAMILY.) 



long and close spikes (4' -9'); pods ovoid-oblong, coriaceous, completely 2- 

 celled. IJ, — Eiver-banks, common from N. New York westward. July -Aug. 



4. A. distdrtus, Torr. & Gray. Low and spreading, branched from the 

 base, smoothish ; leaflets 1 1 - 23, oblong or obovate ; flowers pm-plish or violet, 

 10-20 in a short spike, the standard deeply notched at the summit; pods ob- 

 long, turgid, incurved (|' long), coriaceous, incompletely 2-celled. 1|. — Mason 

 Co., Illinois, Dr. Mead. May. (Also in Arkansas and Texas.) 



5 3. Pod dry and dehiscent, l-cdled, or incompletely 2-celkd by the projection of the 

 ventral [seed-bearing) suture. (Phaca, L., DC.) 



5. A. Codpei'i. Nearly smooth, erect; leaflets 11-21, elliptical or ob- 

 long, somewTiat notched at the end, minutely lioary underneath ; peduncles about 

 the length of the leaves ; Jlowers white ; pods not stalked in the calyx, globose-ovoidf 

 inflated, thinnish (|' long), pointed, grooved at the two sutures, which arc both turned 

 inwards, but especially the inner. IJ, (Phaca neglecta, Torr. ^ Gray.) — Grav- 

 elly banks of rivei-s, &c., W. New York to Wisconsin. June, July. — Plant 

 1° - 2° high, greener and less coarse than A. Canadensis, with pure white flowers 

 in shorter and more open spikes : calyx shorter. (Named for William Cooper, 

 Esq., the discoverer: there being an A. neglectus.) 



6. A. Roltbinsii* Nearly smooth and erect (1° high) ; slender; leaflets 

 7-11, elliptical, often notched; peduncles much longer than the leaves; raceme 

 loose, nearly l-sided in fruit; flowers white (4" long) ; pods hanging, stalked in 

 the calyx, oblong, boat-shaped, obtuse, the seed-bearing suture convex, the other 

 neai-ly straight. (Phaca Robbiiisii, Oakes.) — Eocky ledges of the Onion River, 

 near Bm-lington, Vennont, Dr. Bobbins (1829). Willoughby Mountain, Mr. 

 Blake. June. — Pods 6"-7" long, 1-celled, papery and veiny, smootli, the 

 outer suture often slightly turned inwards. 



15. ^SCHYNOMEWE, L. Sensitive Joint Vetch. 



Calyx 2-lipped ; the upper lip 2-, the lower 3-cleft. Standard roundish : keel 

 boat-shaped. Stamens diadelphous in two sets of 5 each. Pod flattened, com- 

 posed of several square easily separable joints. — Leaves odd-pinnate, with sev- 

 eral pairs of leaflets, sometimes sensitive, as if shrinking from the touch (whence 

 the name, from ala-)(yvofi.(VT), being ashamed). 



1. ]E. Ilispida, Willd. Erect, rough-bristly; leaflets 37-51, linear; 

 racemes 3-5-flowered; pod stalked, 6 - 10-jointed. (l) — Along rivers, S. 

 Penn., Virginia, and southward. Aug. — Flowers yellow, reddish externally. 



16. HEDYSARUM, Tourn. IIedysabum. 



Calyx 5-cloft, the lobes awl-shaped and nearly equal. Keel nearly straight, 

 obliquely tiiincatc, not appendaged, longer than the wings. Stamens diadel- 

 phous, 9 & 1 . Pod flattened, composed of several equal-sided sepai-able round- 

 ish joints connected in the middle. — Leaves odd-pinnate. (Name composed of 

 fjhvs, sweet, and apco/ia, smell.) 



1. H. boreale, Nutt. Leaflets 13-21, oblong or lanceolate, nearly 

 glabrous ; stipules scaly, united opposite the petiole, raceme of many deflexed 



