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 1–7+ mm) and/or stellate-pubescent, distally usually glabrous, sometimes piloso-hirsute (hairs 1–7+ mm) and/or 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 (3–)5–8, cauline 0–3(–5);

blades lanceolate to lance-elliptic, 50–120 × 6–18(–30) mm, lengths (3–)5–8+ times widths, bases cuneate, margins usually entire, sometimes denticulate, apices acute, faces usually piloso-hirsute (hairs 2–7+ mm) and stellate-pubescent, sometimes glabrous or glabrate.

usually stipitate-glandular, rarely glabrous or glabrate.

± stellate-pubescent, sometimes stipitate-glandular as well.

obconic to campanulate, 7–9 mm.

± campanulate, 8–10+ (× 4–6) mm.

30–45+;

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

20–40+;

corollas yellow, 8–10+ mm.

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

8–13+, apices rounded to acute, abaxial faces piloso-hirsute (hairs 0.5–2+ mm), stellate-pubescent, and stipitate-glandular.

bractlets 6–10+.

bractlets 8–13+.

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

(2–)5–12+ in paniculiform to corymbiform or subumbelliform arrays.

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

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

(black) columnar, 2.5–3 mm;

pappi of 40–60+, white or stramineous bristles in ± 2 series, 4–6 mm.