PULSE FAMILl'. 103 



12. AMdHPHA, FALSE IKDIGO. (Name, amorphous, wanting tlie 

 ordinary form, from the absence of four of the petals.) There are usually- 

 little stipels to the leaflets. Fl. summer. 



A. fruticbsa, Commox A. River-banks from Penn. S. & W. ; a tall or 

 middle-sized shrub, smoothish, with pctiolcd leaves of 1.5 - 2.5 oval or oblong leaf- 

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



A. herb^cea (but it is not an herb) of low pine-barrens S., 2° -4° high, 

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

 teeth, later blue or white flowers, and 1 -seeded pods. 



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

 and S. W. ; l°-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. FSORALS A. ( 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. "2^ 



* Leaves pinnately 3-foh'olate, i. e. the side-leaflets a little below the apex of the 

 common petiole, or the uppermost of a single leaflet. 



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

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

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



P. raelilotoldes. Dry places, W. & S. : l°-2° high, somewhat pubes- 

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

 peduncles, and strongly wrinkled pods. 



* * Leaves digitate, of 3-7 leaflets. 



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

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

 wrinkled pods. 



P. floribunda. 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. cau^scens. 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. argophylla. Prairies N. W., mostly across the Mississippi, widely 

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

 lanceolate leaflets and spikes of rather few largish flowers. 



P. escu.l6llta, Pomme Blanche of the N. W. Voyageurs ; the turnip- 

 shaped or tuberous mealy root furnishing 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 

 pointed pod. 



14. ONOBRYCHIS, 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. STYLOS ANTHES, 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 pine-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 

 dusters or heads, in late summer. 2/ 



