514 LEGUMINOSAE (PULSE FAMILY) 



28. TEPHR6SIA Pers. HOART 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<p6s, ash-colored or hoary.*) CRACCA L. 



1. T. virginiana (L.) Pers. (GOAT'S RUE, CATGUT.) Silky-villous with 

 whitish hairs when young ; stem erect and simple, 3-6 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. X. H. to Minn., and southw.^ chiefly 

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

 HOLOSERfcEA (Nutt.) T. & G. has 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, 2-4-flowered ; 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 with long even- 

 pinnate 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 a. 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. Pod 

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

 spines for stipules. Leaves odd-pinnate, the ovate or oblong leaflets stipellate. 

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

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

 Locust-tree in Europe.) 



1. R. Pseudo-Acacia L. (COMMON L., FALSE ACACIA.) Branches glabrous 

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

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

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

 naturalized in many places. May, June. 



2. R. viscdsa Vent. (CLAMMY L.) Branchlets and leaf-stalks clammy; 

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

 pod glandular-hispid. Va. to Ga., in the mts. ; cultivated, like the last, and 

 often escaping. May, June. 



3. R. hfspida L. (BRISTLY L., ROSE ACACIA.) Shrub, 1 to 3 m. high ; 

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

 pods glandular-hispid. Mts. of Va. to Ga. ; cultivated and established northw. 

 May, June. 



