5. Erigeron Pumilus Nutt. Low Erigeron. Daisy

Fig. 4365

Erigeron pumilis Nutt. Gen. 2: 147. 1818.

Perennial by a deep root; stems tufted, hirsute, slender, simple, or branched, 4'-10' high. Leaves entire, hirsute, the lower and basal ones narrowly spatulate or linear, petioled, obtuse or acutish, 1'-4 long, 1"-2" wide; stem leaves linear, sessile, 1/2'-2 1/2' long, acute; heads solitary or several, 6"-10" broad, short-peduncled; involucre hemispheric, its bracts linear, acute, hirsute; rays 50-80, white, 3"-4" long, at length deflexed; pappus double, the outer row of bristles short and more or less intermixed with the inner; achenes pubescent.

Dry plains, North Dakota to western Nebraska, Kansas, British Columbia, Colorado and Utah. May-Sept.

5 Erigeron Pumilus Nutt Low Erigeron Daisy 10365 Erigeron Pumilus Nutt Low Erigeron Daisy 1037

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 preceding species; stems slender, erect, tufted, appressed-canescent, 6'-10' high, simple, or branched above. Leaves narrow, entire, canescent, the basal and lower ones narrowly 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; pappus 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 hyssopifolius 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, glabrous or very nearly so, 4'-15' high. Leaves narrow, thin, the basal and lower ones oblong or spatulate, short-petioled, 1'-1 1/2' long, 1 1/2"-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 flowering time, its bracts linear-lanceolate, sparingly pubescent; rays 12-30, white or purplish, 3"-6" long; pappus simple.

On moist cliffs, Newfoundland to northern Vermont, Mackenzie and Lake Superior. July-Aug.

7 Erigeron Hyssopifolius Michx Hyssop Leaved Erige 10387 Erigeron Hyssopifolius Michx Hyssop Leaved Erige 1039

8. Erigeron Flagellaris A. Gray. Running 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 stolons; root slender; stem slender, branched, the branches elongated. Leaves entire, the basal and lower ones spatulate or oblong, obtuse 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 1/4' high; involucre hemispheric, its narrow bracts pubescent; 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.