legl'minosjE. (pulse family.) 91 



* Fruiting cahjx erect. 



1. T. prditense, L. (Red Clover.) Hairy; stems erect; leaflets ob- 

 long-ovate or oval, often emarginate, slightly seiTulntc ; hea<ls large, ovate ; 

 ealyx-teeth setaceous, hairy ; flowers purple. — Around dwellings. Introduced, 

 but scarcely naturalized, at least in the low country. — Stems l°-2°high. 

 Leaves usually marked with a pale 3-angled spot above. 



2. T. arvense, L. (ItAnniT-FOOT Clover.) Softly pubescent ; stems 

 erect ; leaflets linear-oblong, minutely 3-toothed ; heads oblong ; calyx-teeth se- 

 tiiccous. plumose ; corolla white, with a purple spot on the wings. — Old fields, 

 chiefly in the upper districts. Introduced. Q) — Stems 8' - 12' high. 



* * Fruiting calyx reflcxcd. 



3. T. reflexum, L. (Buffalo Clover.) I'uliescent; stems ascending ; 

 leaflets roundish or obcordate, toothed, the uppermost oblong ; heads globose ; 

 calyx-tube very short, the subulate teeth long and hairy ; vcxilhim broadly ovate, 

 purple; the wings and keel white; legume 3-5-secded. — Waste places and 

 pastures, Florida to North Carolina, and northward. April and May. (I) and 

 ® — Stems 6' - 1 2' long. Heads lai-ge. 



4. T. repens, L- (White Clover.) Smooth; stems creeping; leaf- 

 lets roundish or obcordate ; heads globose, long-peduncled ; calj-x-tceth short ; 

 flowers white ; legume 4-seeded. — Pastures and around dwellings. Introduced. 

 May. % — Stems G'-12' long. 



f>. T. procumbens, L. Pubescent; stems slender, erect or procumbent; 

 leaflets small, thin, obovato or obcordate, toothed, the middle one stalked ; 

 heads small, ovate ; flowers yellow ; legume 1-seeded. — Waste places ; more 

 common in the upper districts. Introduced. ® — Stems 6' -12' long. 



6. T. Cajrolinianum, Michx. Pubescent ; stems tufted, prostrate ; leaf- 

 lets small, obcordate, slightly toothed ; heads roundish, long-peduncled ; flowers 

 white, tinged with purple ; vexillum acute ; legume 4-seedcd. — Fields and pa.s- 

 tures, Florida to North Carolina, and westward. March aud April. % — 

 Stems 6' - 10' long ; in shady places erect. 



6. HOSACKIA, Dougl. 



Calyx 5-eleft. Vexillum as long as the keel and spreading wings. Stamens 

 diadelphous (9 & 1). Legume cylindrical or compressed, smooth, wingless, 

 many-seeded. — Herbs. Leaves trifoliolatc or pinnate. Stipules mostly minute 

 and gland-like. Peduncles *1 - soveral-flowered. 



1- H. Purshiana, Bcnth, Hairy; stem much branched ; leaves trifolio- 

 latc, with oblong leaflets ; peduncle 1-flowered, longer than the leaves ; keel 

 acute ; bracts simple ; legume linear, nearly terete. — North Carolina. — Stem 

 12'- 15' high. Flowers rose-color. 



7. PSORALEA, L. 



Calyx campanulate, 5-cleft, with l;|ie lobes acute. Stamens diadelphous or 

 partly monadelphous : half of the anthers often imperfect. Legume often 



