LEGTJMINOS.E. (PULSE FAMILY.) 131 



1. R. Pseudacacia, L. (Common Locust or False Acacia.) Branches 

 naked; racemes slender, loose; flowers white, fragrant; pod smooth. — S. Penn- 

 sylvania to S. Illinois and southward. Commonly cultivated as an ornamental 

 tree, and for its valuable timber : naturalized in many places. June. 



2. R. visedsa, Vent. (Clammy L.) Branchlets and leafstalks clammy; 

 Jloivers crowded in oblong racemes, tinged with rose-color, nearly inodorous ; pod 

 glandular-hispid. — Virginia and southward. Cultivated, like the last, a smaller 

 tree. June. 



3. R. hispida, L. (Bristly L. or Rose Acacia.) Branchlets and stalks 

 bristly ; flowers large and deep rose-color, inodorous ; pods glandular-hispid. — 

 Varies with less bristly or nearly naked branchlets ; also with smaller flowers, 

 &c. — Mountains of Virginia and southward : commonly cultivated. May, 

 June. — Shrub 3° - 8° high. 



12. WISTARIA, Nutt. Wistaria. 



Calyx campanulate, somewhat 2-lipped ; upper lip of 2 short teeth, the lower 

 of 3 longer ones. Standard roundish, large, turned back, with 2 callosities at 

 its base : keel scythe-shaped : wings doubly auricled at the base. Stamens di- 

 adelphous. Pod elongated, thickish, knobby, stipitate, many-seeded, at length 

 2-valved. Seeds large. — Woody twiners, climbing high, with minute stipules, 

 pinnate leaves of 9- 13-ovate-lanceolate leaflets, with or without minute stipels, 

 and dense racemes of large and showy lilac-purple flowers. (Dedicated to the 

 late Professor Wistar, of Philadelphia. ) 



1. W. frut6scens, DC. Downy or smoothish when old; wings of the 

 corolla with one short auricle and an awl-shaped one as long as the claw. (W. 

 specibsa, Nutt.) — Alluvial grounds, W. Virginia to Illinois and southward. 

 May. — Sometimes cultivated for ornament, as is the still handsomer Chinese 

 species. 



13. TEPHROSIA, Pers. Hoary Pea. 



Calyx about equally 5-cleft. Standard roundish, usually silky outside, turned 

 back, scarcely longer than the coherent wings and keel. Stamens monadelphous 

 or diadelphous. Pod linear, flat, several-seeded, 2-valved. — Hoary perennial 

 herbs, with odd-pinnate leaves, and white or purplish racemed flowers. Leaflets 

 mucronate, veiny. (Name from re(f)p6s, ash<olored or hoary.) 



1. T. Virginiana, Pers. (Goat's Rue. Catgut.) Silky-villous with 

 whitish hairs when young ; stem erect and simple (l°-2° high), leafy to the top ; 

 leaflets 17-29, linear-oblong ; flowers large and numerous, clustered in a termi- 

 nal oblong dense raceme or panicle, yellowish-white marked with purple. — Dry 

 sandy soil. June, July. — Roots long and. slender, very tough. 



2. T. spicata, Torr. & Gray. Villous with rusty hairs; stems branched 

 below, straggling or ascending (2° long), few-leaved; leaflets 9- 15, obovate or 

 oblong-wedge-shaped, often notched ; flowers few, in a loose interrupted very long- 

 peduncled spike, reddish. — Dry soil, Delaware and southward. July. 



3. T. hispidula, Pursh. Hairy with some long and rusty or only minute 

 and appressed pubescence ; stems slender (9' -24' long), divergently branched, 



