COMPOSITAE. Vo. III. 
6. Erigeron canus A. Gray. Hoary Erigeron. 
Fig. 4366. 
Erigeron canus A. Gray, Mem. Am. Acad. (II) 4: 67. 1849. 
Perennial by a deep woody root, resembling the pre- 
ceding species; stems slender, erect, tufted, appressed- 
canescent, 6-10’ high, simple, or branched above. Leaves 
narrow, entire, canescent, the basal and lower ones nar- 
rowly spatulate, petioled, 2-4’ long, the upper linear, 
sessile, acute, gradually smaller; heads solitary, or 2-4, 
peduncled, 6’-8” broad; involucre hemispheric, its bracts 
linear, acute, densely canescent; rays 40-50, purple or 
white, 2-3” long; achenes glabrous, 8-10-nerved; pap- 
pus double, the outer row of bristles rather conspicuous. 
In dry soil, South Dakota to western Nebraska, Wyoming, 
Colorado and New Mexico. June-Aug. 
7. Erigeron hyssopifolius Michx. Hyssop- 
leaved Erigeron. Fig. 4367. 
Erigeron hyssopifoliuns Michx. Fl. Bor. Am. 2: 123. 
1803 
Aster graminifolius Pursh, Fl. Am. Sept. 545. 1814. 
Perennial by slender rootstocks; stems tufted 
or single, very slender, simple or branched, gla- 
brous or very nearly so, 4’-15’ high. Leaves nar- 
row, thin, the basal and lower ones oblong or 
spatulate, short-petioled, 1’-14’ long, 14’’-2” wide, 
the upper linear or linear-oblong, acute, usually 
numerous; heads solitary or several, slender- 
peduncled, 5”’-8” broad; peduncles appressed- 
pubescent; involucre nearly cylindric at flower- 
ing time, its bracts linear-lanceolate, sparingly 
pubescent; rays 12-30, white or purplish, 3-6” 
long; pappus simple. 
On moist cliffs, Newfoundland to northern Ver- 
mont, Mackenzie and Lake Superior. July—Aug. 
8. Erigeron flagellaris A. Gray. Run- 
ning Fleabane. Fig. 4368. 
Erigeron flagellaris A. Gray, Mem. Am. Acad. (II) 
4: 68. 1849. 
Appressed-pubescent, sometimes densely so, 
perennial by decumbent rooting stems or sto- 
lons; root slender; stem slender, branched, 
the branches elongated. Leaves entire, the 
basal and lower ones spatulate or oblong, ob- 
tuse or acute, 1’-2’ long, narrowed into long 
petioles, the upper sessile, linear or linear- 
spatulate, much smaller; peduncles solitary, 
elongated; heads about 1’ broad and ? high; 
involucre hemispheric, its narrow bracts pu- 
bescent; rays very numerous, white to pink; 
pappus double, the outer series of subulate 
bristles. 
In moist soil, South Dakota to Wyoming, Utah, 
western Texas and New Mexico. May-July. 
