LEOU.^nNOS^.. (iTLSK lA.MILY.) 91 



* Fntiti-nfj rahjx erect. 



1. T. pratense, L. (Red Clover.) Ilairv ; stems erect; leaflets ob- 

 long-ovate or oval, often emarginate, slightly serrulate ; lieads large, ovate ; 

 calyx-teeth setaceous, hairj' ; flowers purple. — Around dwellings. Introduced, 

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

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



2. T. arvense, L. (R.\bbit-foot Clover.) Softly pubescent ; stems 

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

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

 chiefly in t!ie ujtpcr districts. Introduced. {£) — Stems 8' - 12' liigii. 



, * * Fruiting calijT irjlcxfd. 



n. T. roflexum, L. (Buffalo Clover.) I'ubesccnt ; stems ascending; 

 leaflets rouiidish or obcordate, toothed, the U])i)crniost oblong ; heads globose ; 

 ealyx-tube very short, the subulate teeth long and hairy ; vexiilum broad! v ovate, 

 pui'plc ; the wings and keel white; legume 3-5-sccded. — "Waste places and 

 pastures, Florida to North Carolina, and northward. April and ^lay. (T^ and 

 (D — Stems C - 1 2' long. Heads large. 



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

 lets roundish or obcordate ; heads globose, long-pedunclcd ; calyx-teeth short ; 

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

 M.ny. 11. — Stems C'-12' long. 



5. T. prOGUmbens, L. Pubescent; stems slender, erect or procumbent ; 

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

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

 common in the up]3er districts. Introduced. Q) — Stems 6'- 12' long. 



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

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

 white, tinged with purple ; vexiilum acute; legume 4-secded. — Fields and pas- 

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

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



6. HOSACKIA, Dougl. 



Calyx 5-cleft. Vexiilum as long as the keel and spreading wings. Stamens 

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

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

 and gland-like. Peduncles 1 - several-flowered. 



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

 late, 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 the lobes acute. Stamens diadelphous or 

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



