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 1–3+ mm) and stellate-pubescent, distally piloso-hirsute (hairs 0.5–1+ 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 2–4, cauline (2–)4–10;

blades (often purple-mottled) oblong to lanceolate, 20–80 × 7–20+ mm, lengths 3–4 times widths, bases cuneate, margins usually dentate, sometimes entire, apices acute to acuminate, abaxial faces glabrous or piloso-hirsute (especially midribs), adaxial glabrous or stellate-pubescent.

usually stipitate-glandular, rarely glabrous or glabrate.

piloso-hirsute and stellate-pubescent (not, or rarely, stipitate-glandular).

obconic to campanulate, 7–9 mm.

campanulate to obconic, 10–15 mm.

30–45+;

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

30–50+;

corollas yellow (lengths unknown).

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

25–35, apices acuminate, abaxial faces stellate-pubescent and stipitate-glandular.

bractlets 6–10+.

bractlets 10–16.

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

1–5(–10) in ± corymbiform arrays.

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

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

columnar, 3–5 mm;

pappi of ca. 30, stramineous bristles in ± 2 series, ca. 6 mm.