glabrate

Perennial, branching, puberulent or glabrate, low; leaves narrow, pinnately or bipinnately parted, the lobes and teeth bristle-tipped; heads small, the appressed scales bristle-tipped; achenes pubescent.—Minn. to Kan., and southward.

From The Manual of the Botany of the Northern United States Including the District East of the Mississippi and North of North Carolina and Tennessee by Asa Gray

Stem scabrous-puberulent, 2–3° high; leaves linear, short, commonly twisted, roughish-puberulent or glabrate; rays very short.—Dry soil, coast of Va. and southward.

From The Manual of the Botany of the Northern United States Including the District East of the Mississippi and North of North Carolina and Tennessee by Asa Gray

Stem 2–5° high; leaves linear or linear-lanceolate, entire, usually glabrate above; heads oblong, canescent, 2–3´´ long—Minn. to Neb., and westward.

From The Manual of the Botany of the Northern United States Including the District East of the Mississippi and North of North Carolina and Tennessee by Asa Gray

Leaves soft-pubescent when young, becoming glabrate; leaflets rhombic-obovate or ovate, unequally cut-toothed, 1–3´ long, the terminal one cuneate at base and sometimes 3-cleft; flowers pale yellow.

From The Manual of the Botany of the Northern United States Including the District East of the Mississippi and North of North Carolina and Tennessee by Asa Gray

Slightly tomentose or glabrate, leafy, 1–2° high; divisions of the leaves narrowly linear or filiform, revolute; involucral scales obovate-oblong; achenes long-villous.—Neb. to Ark. and Tex.

From The Manual of the Botany of the Northern United States Including the District East of the Mississippi and North of North Carolina and Tennessee by Asa Gray