Flora of North America species comparison

proximally piloso-hirsute (hairs 1.5–5+ mm), sometimes stellate-pubescent as well, distally stellate-pubescent, sometimes stipitate-glandular, rarely piloso-hirsute (hairs 1–2+ mm).

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 0(–3), cauline 6–24+;

blades elliptic or oblanceolate to spatulate or lanceolate, (20–)35–80(–120+) × (10–)20–35(–50+) mm, lengths 2–6+ times widths, bases cuneate to rounded-truncate, margins usually entire, sometimes denticulate, apices rounded to obtuse, faces hirtellous to piloso-hirsute (hairs 0.5–1+ 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.

stellate-pubescent and stipitate-glandular (hairs 0.3–0.6+ mm).

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

campanulate, 7–9 mm.

± campanulate, 8–10+ (× 4–6) mm.

(30–)40–60+;

corollas yellow, 9–11 mm.

20–40+;

corollas yellow, 8–10+ mm.

13–21+, apices ± acuminate, abaxial faces stellate-pubescent and stipitate-glandular, rarely, if ever, piloso-hirsute.

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

bractlets 12–15+.

bractlets 8–13+.

(5–)10–25(–50+) in corymbiform to paniculiform arrays.

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

columnar, 2.5–3 mm;

pappi of 30–40+, stramineous bristles in ± 2 series, 6–7 mm.

(black) columnar, 2.5–3 mm;

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