94 - LEGUMINOS^E. (rULSE FAMILY.) 



toothed ; peduncles 3 - 5-flowercd ; flowers yellow ; pods compactly spiral, of 2 or 3 

 turns, compressed, furrowed on the thick edge, and fringed with a double row of 

 curved prickles. (T) — Introduced with wool into w/iste grounds in some places. 

 (Adv. from Eu.) 



4. M. denticulata, Willd. Nearly glabrous; pods loosely spiral, deeply 

 reticulated, and with a thin keeled edge: otherwise like the last. — Sparingly in- 

 troduced into New England, &c. (Adv. from Eu.) 



7. PSOKALEA, L. Psoralea. 



Calyx 5-cleft, persistent, the lower lobe longest. Stamens diadelphous- or 

 sometimes monadelphous : the 5 alternate anthers often imperfect. Pod seldom 

 longer than the calyx, thick, often wrinkled, indehiscent, 1-seeded. — Perennial 

 herbs, usually sprinkled all over or roughened (especially the calyx, pods, &C.) 

 with glandular dots or points. Leaves mostly 3- 5-foliolate. Stipules cohering 

 with the petiole. Flowers spiked or 'racemed, white or mostly blue-purplish. 

 Root sometimes tuberous and farinaceous. (Name from \^a>paAe'os, scurfy, from 

 the glands or dots.) 



* Leaves pinnately 3-foiiolate. 



1. P. €>s»«5IsrycSais, Nutt. Nearly smooth and free from glands, erect 

 (3° -5° high) ; leaflets lanceolate-ovate, taper-pointed (3' long) ; stipules and bracts 

 awl-shaped ; racemes axillary, elongated ; peduncle shorter than the leaves ; 

 pods roughened and wrinkled. — River-banks, Ohio to 111. and southward. July. 



— Plowers very small. 



2. P. Stijmliata, Torr. & Gray. Nearly smooth and glandless ; stems dif- 

 fuse ; leaflets ovate-elliptical, reticulated ; stipules ovate ; flowers in heads on axil- 

 lary rather short peduncles ; bracts broadly ovate, sharp-pointed. — Rocks, Falls 

 of the Ohio, Kentucky. June. 



3. P. aneili!l©l©Me§, Michx. Somewhat pubescent, more or less glan- 

 dular; stems erect (1° - 2° high), slender; leaflets lanceolate or narrowly oblong; 

 spikes oblong, long-pedunclcd ; stipules awl-shaped; bracts ovate or lanceolate, 

 taper-pointed ; pods strongly wrinkled transversely. (Also P. eglandulosa, Ell.) 



— Dry soil, Ohio to Illinois, Virginia, and southward. June. 



# * Leaves palmately 3 - 5-foliolate. 



4. P. tflOi*I!>aa«Kl», Nutt. Slender, erect, much branched and bushy 

 (2 C -4° high), minutely hoary-pubescent when young; leaflets varying from linear 

 to obovate-oblong (J' - 1|-' long), glandular-dotted; racemes pauicled ; lobes of 

 the calyx and bracts ovate, acute ; pod glandular. — Prairies of Illinois and 

 southwestward. June - Sept. — Flowers 2" or 3" long. 



5. P. SirgopSsyBIsi, Pursh. Silvery silky-white all over, erect, divergently 

 branched (l°-3° high); leaflets elliptical-lanceolate; spikes interrupted; lobes 

 of the calyx and bracts lanceolate. — High plains, Falls of St. Anthony, Wis- 

 consin, and westward. June. — Flowers 4" -5'' long. 



P. escu lenta, Pursh., of the same region as the last, — the Indian Tur- 

 nip, Pomme Blanche, or Pomme de Prairie, used as food by the aborigi- 

 ne^ — ma y possibly occur on the Wisconsin side of the Mississippi. See add. 



