LEGUMINOS^E. (PULSK FAMILY.) 7 '. 



§ 1. Iluchis of the leaves tendril-lmin'nfj : jtod sessile. Ours are per enniah, with 



semi-sagittate stiptihs haviufj lanceuUtte loljcs, and jmrjtle or pur})lishjhu>ers. 



* LeajUts 8 to 12: peditndcs ratlirr iiian'/-jfouend. 



1. li. venosus, Muhl. Stout, c'liml)iii<;, usually Kouit-wluit downy: leaf- 

 lets oblongovatc, uiostly obtuse : calyx densely puitcsceut to nearly glaliruuH • 

 pod smooth. — Throughout the Easteru States aud extending uorthweMtwani 

 to Washingtou. 



* # Lrajhts 4 to 8 : pcdiiitclcs 2 to G-fiowrrcd. 



2. L. paluster, L. Slender, glabrous or somewhat i»ul>esoent : stem 

 often ■winged: hnjUts )iarruirl>/ obluntj tu linear: llowers smaller (6 lines 

 long). — Common everywhere throughout the northern jjorlions uf both 

 hcmisplieres. 



Var. myrtifolius, Gray. Stipules usually broader and larger; Irafets 

 ocate to oblong, shorter (an inch long or less). — 1*1. Fendl. ."JO. L. vi'jrtij'olins, 

 Muhl. L. venosus, var. S, Torr. & Gray, Fl. i. 274. A. polgph'/llus, Wat«on, 

 Bot. King's Exp. 78. The L. pitbescens, Nutt., of Fl. Colorado. With the 

 species. 



§ 2. Rachis not tendril-bearing or rarely so: pod sliortlg stipitate. In ours the 

 peduncles are 2 to G-Jlourred. 



3. L, polymorphus, Nutt. Usually low, finely pubescent or glal)rous, 

 glaucous: leaflets G to 12, thick and strongly nerved, narrowly oblong, acute: 

 flowers very large, purple: pod 3 or 4 lines broad ; funiculus remarkaidy nar- 

 row aud hilum sliort. — Colorado and New Mexico to Central Arizona. 



4. L. oruatus, Nutt. Kesembling the last except the leaves are nar- 

 rower and shorter, the pod somewhat broader, and the funiculus broader. — 

 Torr. & Gray, Fl. i. '111. Mountains of Colorado and Utah. 



18. CASSIA, L. Sknxa. 



Calyx-tube very short. Anthers erect, opening by two pores or chinks 

 at the apex. Pod usually curved, many-seeded, often with cro.sspartitions 

 between the seeds. — Herbs, with flowers in terminal or axillary (in ours) 

 clusters. 



1 . C. Chamsecr ista, L. Leaflets small, somewhat .sensitive to the touch, 

 10 to 15 pairs, linear-oblong, obliijue at the ba.se, a cujKshaped glanil beneath 

 the lowest pair : flowers on .slender pedicels, in small clusters above the axils, 

 2 or 3 of the showy petals often with a purple spot at the lt:u<e : four of the 

 anthers yellow, the others purple. — Throughout the Eastern Slates and 

 westward across the plains to Colorado. 



19. HOFFMANSEGGIA, Cav. 



Sepals united into a short obconic ba.>;e. Petals obovate. on short c1.in\'», 

 spreading, one or more of them often glandular at ba.«*e. Filament.s thickened 

 or dilated toward the base. Pod oblong or linear, often falcate, comprcs.'ied. 

 dry, 2-valved. — Low perennial herbs or suffrutescent plants*, often dolled with 

 bhick trlamls. 



1. H. Jamesii, Torr. & (Jray. Canesrenflif-puUsmit, much brinche<l 

 from a shrubby base : j.innu- '), abruptly 10 to 16-foliolate: leaflets otW, nearljr 



