968 _C"* FLORA* 



4. Erigeron caespitosus Nutt. TUFTED ERIGERON. (I. F. f. 3814.) btems 

 tufted, canescent, simple, or branched above, 1.5-3 dm. high. Leaves canescent 

 or pubescent, entire, the lower and basal ones petioled, narrowly oblanceolate or 

 spatulate, 2-7 cm. long; heads solitary or several, short-peduncled, 25-37 mm. 

 broad; bracts lanceolate or linear-oblong, acute, canescent; rays 40-60, 6-12 mm. 

 long, white or pinkish; pappus double, the outer series of bristles very short. In 

 dry soil, Manitoba and the N. W. Terr, to Neb., N. Mex. and Cal. June -Aug. 



5. Erigeron pumil us Nutt. Low ERIGERON. (I. F. f. 3815.) Stems tufted, 

 slender, simple, or branched, 1-2.5 dm. high. Leaves entire, hirsute, the lower 

 and basal ones narrowly spatulate or linear, petioled, 2-10 cm. long, 2-4 mm. 

 wide; stem-leaves linear; heads 12-20 mm. broad, short-peduncled; bracts linear, 

 acute, hirsute; rays 50-80, white, 6-8 mm. long, at length deflexed; pappus 

 double, the outer row of bristles short and more or less intermixed with the inner; 

 achenes pubescent. Dry plains, S. Dak. to N. W. Terr., western Kans., Br. Col. 

 and Utah. May-Sept. 



6. Erigeron canus A. Gray. HOARY ERIGERON. (I. F. f. 3816.) Stems 

 slender, erect, tufted, 15^25 cm. high, simple, or branched above. Leaves nar- 

 row, entire, canescent, the basal and lower ones narrowly spatulate, petioled, 5-10 

 cm. long, the upper linear, sessile, acute, gradually smaller; heads solitary, or 2- 

 4, 12-15 mm - broad; bracts linear, acute, densely canescent; rays 40-50, purple 

 or white, 4-6 mm. long; pappus double, the outer row of bristles rather conspicu- 

 ous. In dry soil, S. Dak. to western Neb., Wyo., Colo, and N. Mex. June- Aug. 



7. Erigeron hyssopifoliusMichx. HYSSOP LEAVED ERIGERON. (I. F. f. 3817.) 

 Perennial by slender rootstocks; stems tuited or single, very slender, simple or 

 branched, glabrous or very nearly so, 10-35 cm. high. Leaves narrow, thin, the 

 basal and lower ones oblong or spatulate, short-petioled, 2-4 cm. long, 3-4 mm. 

 wide, the upper linear or linear-oblong, acute, heads solitary or several, slender- 

 peduncled. 10-15 mm. broad; bracts linear- lanceolate, sparingly pubescent; rays 

 20-30, white or purplish, 4-6 mm. long; pappus simple. On moist cliffs, Newf. to 

 Vt., the N. W. Terr, and Lake Superior. July- Aug. 



8. Erigeron flagellaris A. Gray. RUNNING FLEABANE. (I. F. f. 3818.) 

 Appressed-pubescent, sometimes densely so. Stem slender, branched, the branches 

 elongated; leaves entire, the basal and lower ones spatulate or oblong, obtuse or 

 acute, 2-5 cm. long, narrowed into long petioles, the upper sessile, linear or linear- 

 spatulate, much smaller; peduncles solitary, elongated; heads about 25 mm. broad 

 and 6 mm. high; rays very numerous, white to pink; pappus double, the outer 

 series of subulate bristles. In moist soil, S. Dak. to Colo., Utah, Tex. and N. Mex. 

 May-July. 



9. Erigeron pulchellus Michx. ROBIN'S OR POOR ROBIN'S PLANTAIN. (I. 

 F. f. 3819.) Perennial by stolons and offsets, villous pubescent; stems simple, 

 slender, 2.5-6 dm. high. Basal leaves tufted, spatulate or obovate, somewhat 

 cuneate at the base, narrowed into short margined petioles, obtuse at the apex, 2- 

 7 cm long, 1-5 cm. wide, dentate or serrate; stem-leaves sessile, partly clasping, 

 oblong, lanceolate to ovate, mostly acute, entire, or sparingly serrate; heads 1-6, 

 slender-peduncled, bracts linear, acuminate, villous; rays numerous, violet or 

 purplish, 8-14 mm. long; achenes nearly glabrous; pappus simple. On hills and 

 banks, N. S. to Ont., S. Dak., Fla. and La. April-June. 



10. Erigeron Philadelphicus L. PHILADELPHIA FLEABANE. SKEVISH. 

 (I. F. f. 3820.) Perennial by stolons and offsets, soft-pubescent or sometimes 

 nearly glabrous; stems slender, mostly branched above, 3-9 dm. high. Basal and 

 lower leaves spatulate or obovate, obtuse, dentate, 2-7 cm. long, narrowed into 

 short petioles; upper stem-leaves clasping and often cordate at the base ; heads 

 several or numerous, corymbose-paniculate, 10-25 mm - broad, slender-peduncled; 

 bracts linear, usually scarious-margined; achenes puberulent. In fields and woods, 

 throughout N. Am., except the extreme north, but locally rare. April-Aug. 



11. Erigeron divergens T. & G. SPREADING FLEABANE. (I. F. f. 3821.) 

 Annual or biennial, diffusely branched, 15-37 cm. high, densely cinereous- 

 pubescent or hirsute. Basal and lower leaves spatulate or oblanceolate, acute or 

 obtuse, mostly petioled, entire, dentate or lobed, 2-5 cm. long, 4-10 mm. wide, 

 the upper sessile, linear or narrowly spatulate, usually acute, gradually smaller; 

 beads 16-25 mm> broad; bracts linear, acute, hirsute or canescent; rays about 100, 



