LEGUMINOS^E. (PULSE FAMILY.) 131 



1. R. Pseudaeacia, 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. viscbsa, Vent. (CLAMMY L.) Branchlets and leafstalks clammy; 

 flowers 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. WISTAEIA. 



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. frut^SCens, 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. 

 speciosa, 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^pds, ash-colored or hoary.) 



1. T. Virginiana, Pers. (GOAT'S HUE. 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, 



