Flora of North America species comparison

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

proximally usually glabrous, sometimes piloso-hirsute (hairs 3–6+ mm), distally glabrous or stellate-pubescent, sometimes piloso-hirsute (hairs 1–3+ mm) and stipitate-glandular as well.

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 3–12+, cauline (1–)3–6;

blades oblanceolate to lanceolate, 35–120(–200) × 10–25(–30+) mm, lengths 3–6+ times widths, bases cuneate to truncate (distal leaves), margins usually entire, sometimes denticulate or toothed, apices obtuse to acute, faces piloso-hirsute (hairs 2–3+ mm).

usually stipitate-glandular, rarely glabrous or glabrate.

piloso-hirsute (hairs 0.5–1+ mm), stellate-pubescent, and stipitate-glandular.

obconic to campanulate, 7–9 mm.

± campanulate, 6–8+ (× 4–5) mm.

30–45+;

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

20–24+;

corollas yellow, 6–9 mm.

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

13–18+, apices ± rounded, abaxial faces piloso-hirsute (hairs 0.5–1+ mm), stellate-pubescent, and stipitate-glandular.

bractlets 6–10+.

bractlets 3–8+.

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

(5–)12–30(–60+) in paniculiform arrays.

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

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

(usually black, sometimes red-brown) columnar, 2–3 mm;

pappi of 36–40+, white or stramineous bristles in ± 2 series, 3.5–5 mm.