Flora of North America species comparison

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

proximally usually piloso-hirsute (hairs 2–4+ mm), rarely glabrous, distally usually glabrous, sometimes piloso-hirsute (hairs 1–3+ mm), stellate-pubescent, and/or stipitate-glandular.

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 3–8(–20+), cauline 0–2(–4+);

blades oblanceolate to lanceolate, 30–100(–150+) × 8–20+ mm, lengths 2.5–8+ times widths, bases cuneate, margins entire or denticulate, apices rounded to acute, faces glabrous or piloso-hirsute (on midribs and at margins, hairs 1–4+ mm).

usually stipitate-glandular, rarely glabrous or glabrate.

piloso-hirsute (hairs 1–2+ mm), stellate-pubescent, and stipitate-glandular.

obconic to campanulate, 7–9 mm.

campanulate, 5–7 mm.

30–45+;

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

(40–)60–80+;

corollas yellow, 6–9 mm.

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

12–18+, apices acute to acuminate, abaxial faces piloso-hirsute (hairs 0.5–1.5+), stellate-pubescent, and stipitate-glandular.

bractlets 6–10+.

bractlets 3–12+.

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

(3–)10–30+ in subumbelliform or corymbiform arrays.

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

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

columnar, 1.5–2 mm;

pappi of 25–40+,white bristles in 1 series, 3–4 mm.