Genus 12. 



PEA FAMILY. 



357 



10. Trifolium reflexum L. Buffalo Clover. 

 Fig. 2483. 



Trifolium reflexum L. Sp, PI. 766. 1753. 



Annual or biennual, pubescent, ascending, branching, 

 io'-2o' high. Leaves long-petioled ; stipules ovate-lan- 

 ceolate, acuminate, foliaceous, few-toothed or entire, 

 8"-i2" long; leaflets all from the same point, short- 

 stalked, oval or obovate, cuneate at the base, obtuse or 

 emarginate at the apex, denticulate, S"-I2" long ; heads 

 peduncled, dense, globose, i' in diameter or more; 

 flowers 5 '-6" long, all on slender pedicels, at length 

 3"-4" long and reflexed ; standard red, wings and keel 

 nearly white; calyx-teeth linear-subulate, shorter than 

 the corolla, finely pubescent; pods 3-6-seeded. 



In meadows, southern Ontario, western New York and 

 Pennsylvania to Iowa, South Dakota, Arkansas, Kansas, 

 Florida and Texas. April-Aug. 



II. Trifolium stoloniferum Muhl. Running Buf- 

 falo Clover. Fig. 2484. 



Trifolium stoloniferum Muhl. Cat. 70. 181 3. 



Perennial, glabrous, branching, 6'-i2' long, forming run- 

 ners at the base. Leaves, especially the lower, long-peti- 

 oled ; stipules ovate-lanceolate, acute, membranous, often 

 l' long; leaflets all from the same point, short-stalked, ob- 

 ovate or obcordate, broadly cuneate at the base, denticu- 

 late, 9"-iS" long; heads terminal, peduncled, nearly i' 

 in diameter; flowers white, purplish-tinged, 4"-6" long; 

 pedicels slender, 3"-4" long, at length reflexed ; calyx- 

 teeth subulate, longer than the tube; pod commonly 

 2-seeded. 



Prairies and dry woods, Ohio to Iowa. Tennessee, Missouri 

 and Kansas. Introduced into South Dakota. Recorded from 

 Nebraska. May-Aug. 



12. Trifolium hybridum L. Alsike or 

 Alsatian Clover. Fig. 2485, 



Trifolium hybridum L. Sp. PI. 766. 1753. 



Perennial, erect or ascending, sometimes 

 rather stout and succulent, i°-2° high, branch- 

 ing, glabrous or very nearly so, not uniting at 

 the nodes. Leaves long-petioled ; stipules ovate- 

 lanceolate, acuminate, membranous, 6"-i2" 

 long; leaflets all from the same point, short- 

 stalked, obovate, sometimes emarginate but not 

 obcordate, narrowed or cuneate at the base, 

 serrulate with sharp-pointed teeth, 6"-i2" long; 

 heads globose, long-peduncled ; flowers pink, 

 or pinkish, 3"-4" long: pedicels slender, i"-2" 

 long, reflexed when old ; corolla 3-4-times as 

 long as the calyx; calyx-teeth subulate, about 

 equalling the tube; pod 2-4-seeded. 



In meadows and waste places. Nova Scotia to 

 Ontario, Idaho, British Columbia, New Jersey, 

 Georgia and New Mexico. Bermuda. Cuba. Swed- 

 ish clover. Sometimes cultivated for fodder. May- 

 Oct. 



