Flora of North America species comparison

proximally piloso-hirsute (hairs 1–3+ mm) to glabrate, distally usually glabrous, rarely piloso-hirsute.

proximally glabrous or piloso-hirsute (hairs 6–10+ mm), distally glabrous.

basal 3–6+, cauline 0–1+;

blades obovate or elliptic to oblanceolate, 40–60(–120) × 15–35(–50+) mm, lengths 2–3(–4) times widths, bases cuneate, margins usually entire, sometimes denticulate, apices rounded to acute, abaxial faces piloso-hirsute (hairs 2–5 mm) and stellate-pubescent, adaxial glabrous or piloso-hirsute (mostly near margins, hairs 2–3 mm).

basal (0–)3–5, cauline 4–8+;

blades oblanceolate to lanceolate or linear, 40–80(–120) × 5–10(–20) mm, lengths 2.5–8+ times widths, bases cuneate to truncate, margins entire, apices rounded to acute, faces glabrous or piloso-hirsute (hairs 3–6+ mm).

usually stipitate-glandular, rarely glabrous or glabrate.

usually glabrous, sometimes stellate-pubescent and/or stipitate-glandular.

obconic to campanulate, 7–9 mm.

campanulate, 7–10 mm.

30–45+;

corollas yellow (sometimes pale), 7–11 mm.

ca. 20;

corollas whitish to pinkish, ca. 8 mm.

12–13+, apices acute, abaxial faces usually stellate-pubescent and stipitate-glandular, rarely glabrous.

13–16+, apices ± rounded, abaxial faces usually glabrous, sometimes stellate-pubescent and/or stipitate-glandular.

bractlets 6–10+.

bractlets 8–13.

4–10(–20+) in corymbiform to paniculiform arrays.

6–25+ in ± corymbiform to paniculiform arrays.

(usually black, sometimes red-brown) columnar, 3–4 mm;

pappi of ca. 50+, stramineous bristles in ± 2 series, 4–5 mm.

weakly urceolate, 3–4.5 mm;

pappi of 50–60+, white or stramineous bristles in 2+ series, 4–5+ mm.