514 LEGUMINOSAE (PULSE FAMILY^ 



28. TEPHROSIA Pers. Hoary Pea 



Calyx about equally 5-clett. vStandard roundish, usually silky outside, turned 

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

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

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

 mucronate, veiny. (Name from Tempos, ash-colored or hoary.) Ckacca L. 



1. T. virginiana (L. ) Pers. (Goat's Ri:e, Catglt.) Silky-villoiis with 

 whitish hairs when young ; stem erect and simple, 3-0 dm. high, leafy to the 

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

 terminal ellipsoid dense raceme or panicle, yellowish-white marked with pur- 

 ple. (Cracca L.) — Dry sandy soil, s. N. H. to Minn., and southw., chiefly 

 at low altitudes. June, July. — Roots long and slender, very tough. Var. 

 HOLosERicEA (Nutt.) T. & G. lias more copious or even woolly pubescence and 

 usually narrower leaflets. — With the typical form, westw. 



2. T. spicata (Walt.) T. & G. Villous with rusty hairs; stems branched 

 below, straggling or ascending, 6 dm. long, few-leaved ; leaflets 9-15, obovate 

 or oblong-wedge-shaped, often notched ; flowers few, in a loose and interrupted 

 very long-peduncled spike, reddish. {Cracca Ktze.) — Dry soil, Del. and Va. to 

 Fla. and La. May-July. 



3. T. hispidula (Michx.) Pers. Hairy with some long and rusty or only 

 minute and appressed pubescence ; stems slender, 2-6 dm. long, divergently 

 branched, straggling; leaflets 5-17, oblong, varying to obovate-wedge-shaped 

 and oblanceolate ; peduncles longer than the leaves, 'I^-jiowered ; flowers red- 

 dish-purple. {Cracca Ktze.) — Dry sandy soil, Va. to Fla. and La. May -July. 



29. SESBANIA Scop. 



Calyx campanulate, equally toothed. Standard large, round. Stamens dia- 

 delphous. Ovary many-ovuled ; pod long. — Herbs or shrubs ^\1th long even- 

 piimate leaves. Flowers on axillary peduncles or lateral racemes. (Name 

 latinized from the earlier Sesban Adans., said to be of Arabic origin.) 



1. S. macrocarpa Muhl. Erect annual, 0.7-3 m. high; leaflets 12-25 pairs, 

 narrowly oblong; corolla pale yellow, often spotted; pods 2 dm. in length, 

 narrow, with thickened margins. — Mo. to Fla. and Tex. ; introd. in s. Pa. 



30. ROBINIA L. Locust 



Calyx short, 5-toothed, slightly 2-lipped. Standard large and rounded, turned 

 back, scarcely longer than the wings and keel. Stamens diadelphous. P(kI 

 linear, flat, several-seeded, at length 2-valved. — Trees or shrubs, often with 

 spines for stipules. I>eaves odd-pinnate, the ovate or oblong leaflets stipellate. 

 Flowers showy, in hanging axillary racemes. (Named for John liobin, herbalist 

 to Henry IV. of France, and his son Vespasian liobin, who first cultivated the 

 Locust-tree in Europe.) 



1. R. Pseudo-Acacia L. (Common L., False Acacia.) Branches glabrous 

 or glabrnte ; racemes slender, loose; flowers white, fragrant; pod smooth. — 

 Along the mts.. Pa. to Ga., and in the Ozark Mts. of Mo., Ark., and Okla. ; 

 cofnrrionly cultivated as an ornamental tree, and for its valuable timber, and 

 naturalized in many places. May, June. 



2. R. viscbsa Vent. (Clammv L.) Branchlets and leaf-stalks clammy; 

 flowers croioded in short racemes, tinged with rose-color, nearly inodorous ; 

 pod glandular-hispid. — Va. to G'a., in the mts.; cultivated, like the last, and 

 often escai)ing. May, June. 



3. R. hlspida L. (Bristly L., Pose Acacia.) Shrub, 1 to 3 m. high; 

 branchlets and stalks bristly; flowers large and deep rose-color, inodorous; 

 pods glandular-hi.si)id. — Mts. of Va. to Ga. , cultivated and established northw. 

 May, June. 



