Flora of North America species comparison

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

proximally piloso-hirsute (hairs 3–6+ mm), distally piloso-hirsute (hairs 1–2+ mm) and stellate-pubescent.

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 2–8+, cauline (0–)3–4+;

blades elliptic to oblanceolate, 30–85 × 16–35 mm, lengths 2.5–5+ times widths, bases cuneate (basal) or clasping (cauline), margins entire or denticulate, apices obtuse to acute, faces piloso-hirsute (hairs 1–2+ mm).

usually stipitate-glandular, rarely glabrous or glabrate.

stellate-pubescent.

obconic to campanulate, 7–9 mm.

campanulate, 7–9+ mm.

30–45+;

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

25–40;

corollas whitish to pale yellow, 8–9 mm.

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

13–18+, apices ± rounded to acute, abaxial faces stellate-pubescent.

bractlets 6–10+.

bractlets 9–12+.

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

8–12(–25+) in ± paniculiform arrays.

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

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

urceolate, 3.5–4.5 mm;

pappi of 45–60+, white or stramineous bristles in 2+ series, 5–5.5+ mm.