PULSE PAMILV. 103 



12. AMdRPHA, r.VLSE INDIGO. (Name, amarphmts, wanting the 

 ordmarjr form, from the absence of four of the petals.) There ai-c usually 

 httle stipels to the leaflets. TI. summer. 



•■^i", *'i:'^tic6sa, Common A- Eiver-banks from Ponn. S. & W. : a tall or 

 middle-sized shrub smoothish, with petioled leaves of 1.5 - 2.5 oval or oblonff leaf- 

 lets violet or purple flowers in early summer, and mostly 2-seecled pods. 



A. berbacea (bat it is not an herb) of low pine-barrens S., 20-4° high 

 often downy, has the leaflets more rigid, dotted, and crowded, villous calvx- 

 teetn, later blue or white flowers, and 1-sceded pods. 



A. oan^SOens, called Lead-Plant ; in prairies and on rocky banks W 

 "n- • ■ r; ■ ' '° - 3° high, hoary with soft down, with sessile leaves of 29 - 51 

 elliptical leaflets, smoothish above when old, violet-purple flowers in late summer 

 and 1-seeded pods. ' 



13. PSORALEA. (Greek word for scurfy, from the roughish dots or glands 

 on the leaves, calyx, &c.) Wild S. & W. : fl. early summer, violet, bluish, 

 or almost white, y. 



* Leaves pinnatehj S-foliohie, i. e. the side-leaflets a little, below the apex of the 

 coimnon petiole, or the uppermost of a single leaflet. 



P. On6bryehis. River-banks, Ohio to Illinois and S. : 3° - 5° high, 

 ncai-ly smooth, with lance-ovate taper-pointed leaflets 3' long, small flowers in 

 short-peduncled racemes 3' - 6' long ; pods rough and wrinkled. 



P. melilotoides. Dry places, W. & S. : 1° - 2° high, somewhat pubes- 

 cent, slender, with lanceolate or lance-oblong leaflets, oblong spikes on long 

 peduncles, and strongly wrinkled pods. 



* * Leaves digitate, ofZ-l leaflets. 



P. IiUpin^Uus. Dry pine-barrens S. : smooth and slender, with 5-7 very 

 naiTOw or thread-shaped leaflets, small flowers in loose racemes, and obliquely 

 wrinkled pods. 



P. floribllnda. Prairies from Illinois S. W. : bushy-branched and slen- 

 der, 2° - 4° high, somewhat hoary when young, with 3-5 linear or obovate- 

 oblong much dotted leaflets, small flowers in short panicled racemes, and glan- 

 dular-roughened pods. 



P. candscens. Dry barrens S. E. Bushy-branched, 2° high, hoary- 

 pubescent, with 3 (or upper leaves of single) obovate leaflets, loose racemes of 

 few flowers, and a smooth pod. 



P. argoph^lla. Prairies N. "W., mostly across the Mississippi, widely 

 branched, 1° - 3° high, silvery white all over with silky hairs, with 3-5 broad- 

 lanceolate leaflets and spikes of rather few largish flowers. 



P. escul^nta, Pomme Blanche of the N. W. Voyagcurs ; the tumip- 

 shaped or tuberous mealy root furaishing a desirable food to the Indians N. w! : 

 low and stout, 5'- 15' high, roughish hairy, with 5 lance-oblong or obovate 

 leaflets, a dense oblong spike of pretty large (\' long) flowers, and a hairy 

 winted pod. 



.4. OWOBRYCHIS, SAINFOIN. (Name from Greek, means Asses- 

 food.) 



O. sativa, Common S. Sparingly cult, from Europe as a fodder plant, 

 but not quite hardy N. ; herb l°-2° high, with numerous oblong small leaf- 

 lets, brown and thin pointed stipules, and spikes of light pink flowers on long 

 axillary peduncles, in summer, the little semicircular pod bordered with short 

 prickles or teeth. % 



15. STYLOSANTHES, PENCIL-FLOWER. (Name from Greek 

 •words for column and flower, the calyx being raised on its stalk-like base. 

 The application of the popular name is not obvious. ) 



S. el&tior, of pino-barrens from New Jersey and Illinois S., is an incon- 

 spicuous low herb, in tufts ; the wiry stems downy on one side ; leaflets lan- 

 ceolate, with strong straight veins ; flowers orange-yellow, small, in little 

 clusters or heads, in late summer. 2i 



