212 Leguminosae 



Flowers in capitate racemes, spikes or umbels, rarely 

 few or solitary, on more or less elongated axillary or 

 terminal peduncles. Calyx 5-cleft with nearly equal 

 teeth, persistent. Petals persistent, all more or less 

 adnate to the staminal tube by their claws, or the stand- 

 ard sometimes free : wings narrow ; keel mostly obtuse. 

 Stamens diadelphous. Pods membranous, shorter or 

 slightly exceeding the calyx, 1-6-seeded, dehiscent or 

 indehiscent. 



* Heads not involucrate. 



*- Calyx-teeth not plumose; flowers pedicellate, reflexed in age. 



1. T. gracilentum T. & G. Erect, slender, 2-5 dm. high, gla- 

 brous or peduncles and calyx sparsely villous; stipules lanceo- 

 late; leaflets cuneate-obcordate, serrulate, 1 cm. long; heads 

 15-25-flowered ; calyx-teeth lanceolate-subulate, setaceously acu- 

 minate, 3 times the length of the tube; petals slightly exceed- 

 ing the calyx-teeth, purple or rose color; pods exserted, 2-seeded. 



Common throughout our range on the plains and grassy hills. March- 

 April. 



2. T. bifidum Gray. Erect, very slender, pale green or glau- 

 cous; peduncles and calyx more or less villous; stipules ovate- 

 lanceolate, entire; leaflets linear-cuneate, the sides remotely 

 toothed, apex bifid and mucronulate; heads 6-15-flowered ; calyx- 

 teeth subulate-setaceous, about equaling the minute pale rose- 

 colored corolla ; pod included, 1-seeded. 



Morgans Station, Davidson. 



3. T. ciliolatum Benth. Erect, 2-6 dm. high, glabrous ; stip- 

 ules narrow, acuminate ; leaflets cuneate-oblong or obovate, 1-2 

 cm. long, obtuse or retuse, serrulate; calyx-teeth lanceolate, 

 very acute, rigidly ciliolate ; corolla slightly exceeding the calyx, 

 purple. (T. ciliatum Nutt.) 



Common on grassy hillsides and in the valleys. 



4. T. repens L. Perennial, diffuse, creeping, with erect 

 long-stalked leaves and heads; leaflets obcordate, denticulate; 

 calyx-teeth unequal, lanceolate-subulate, shorter than the tube ; 

 corolla white; pods usually 4-seeded. 



The white clover of our lawns, occasionally appearing as an escape. 



