LEGCMINOSiE. (PULSE FAMILY.) 127 



■*- Calyx-teeth silky-plumose, longer than the whitish corolla: root annual. 



1. T. arvense, L. (Rabbit-foot or Stone Clover.) Silky, branch- 

 ing (5' -10' high); leaflets oblauceolate ; heads becoming very soft-silky and 

 grayish, oblong or cylindrical. — Old fields, &c. (Nat. from Eu.) 



-t- -t- Calyx scarcely hairy except a bearded ring in the throat, shorter than tlie rose- 

 purple elongated-tubular corolla. (Short-lived perennials : flowers sweet-scented.) 



2. T. pratense, L. (Red C-) Stems ascending, somewhat hairy ; leaflets 

 oval or obovate, often notched at the end and marked on the upper side with a 

 pale spot ; stipules broad, bristle-pointed ; heads ovate, sessile. — Fields and mead- 

 ows ; largely cultivated. (Adv. from Eu.) 



3. T. medium, L. (Zigzag C.) Stems zigzag, smoothish ; leaflets oblong, 

 entire, and spotless ; heads mostly stalked; flowers deeper purple, otherwise too 

 like the last. — Dry hills, E. Massachusetts. (Adv. from Eu.) 



* * Flowers pedicelled in umbel-like round heads on a naked peduncle, their short pedi- 



cels reflexed when old : corolla white or rose-color, withering-persistent and turn- 

 ing brownish in fading ; the tubular portion short. 



4. T. refl^XUm, L. (Buffalo C.) Annual or biennial ; stems ascending, 

 downy ; leaflets obovate-oblong , finely toothed ; stipules thin, ovate ; calyx-teeth 

 hairy; pods 3-5-seeded. — Western New York (rare) to Illinois and south- 

 ward. — Heads and flowers larger than in No. 2 : standard rose-red ; wings and 

 keel whitish. 



5. T. stoloniferum, Muhl. (Running Buffalo-C.) Smooth, peren- 

 nial ; stems with long runners from the base ; leaflets broadly obovate or obcordate, 

 minutely toothed ; heads loose ; pods 2-seeded. — Open woodlands and prairies, 

 Ohio to Illinois, Kentucky, and westward. — Flowers white, tinged with purple. 

 Frobably a variety of the last. 



6. T. ripens, L. (White C.) Smooth, perennial; the slender stems 

 spreading and creeping ; leaflets inversely heart-shaped or merely notched, obscurely 

 toothed; 'stipules scale-like, narrow; petioles and especially the peduncles very 

 long ; heads small and loose ; calyx much shorter than the white corolla ; pods 

 about 4-seeded. — Fields and copses, everywhere. Here probably introduced, 

 but indigenous northward. 



7. T. Carolini&num, Michx. (Carolina C.) Somewhat pubescent 

 small perennial, procumbent, in tufts ; leaflets wedge-obovate and slightly notched ; 

 stipules ovate, foliaceous ; heads small on slender peduncles ; calyx-teeth lance- 

 olate nearly equalling the purplish corolla ; standard pointed : pods 4-seeded. — 

 Nat. from Southern States in waste grounds below Philadelphia ( C. E. Smith) ; 

 probably wild in S. Virginia. May. 



* * * Flowers short-pedicelled in close heads, reflexed when old : corolla yellow, per- 



sistent, turning dry and chestnut-brown with age, the standard becoming hood- 

 shaped : annuals, fl. in summer. 

 7. T. agrarium, L. (Yellow or Hop-C.) Smoothish, somewhat up- 

 right (6'- 12' high) ; leaflets obovate-oblong, all three from the same point (palmate) 

 and nearly sessile ; stipules narrow, cohering ivith the petiole for more than half its 

 length. — Sandy fields, Massachusetts to Virginia. (Nat. from Eu.) 



