Flora of North America species comparison

1, glabrous or sparsely tomentose.

1 or 2–5+, clustered, lanate- or arachno-tomentose or glabrescent.

(and proximal cauline) petiolate;

blades ovate, oblanceolate, or spatulate, 10–30 × 5–20 mm, bases tapering, sometimes obtuse, margins entire, subentire, or dentate.

(often abaxially cyanic) petiolate (petioles hairy to glabrate);

blades ovate to lanceolate or narrowly lanceolate, 20–60+ × 10–30+ mm, bases abruptly contracted to tapering, margins subentire or denticulate to subserrate (abaxial faces usually tomentose, adaxials frequently glabrate).

abruptly reduced (sessile, clasping; bractlike, entire).

gradually or abruptly reduced (proximal petiolate, similar to basals; mids and distals sessile, lanceolate, entire).

bracteate (bractlets red-tinged), densely lanate-tomentose.

conspicuously bracteate, usually hairy.

(8–)13;

corolla laminae 6–10+ mm.

(5–)8 or 13;

corolla laminae 4–10 mm.

35–50+;

corolla tubes 2.5–3.5 mm, limbs 3–4 mm.

40–60+;

corolla tubes 1.5–2.5 mm, limbs 3.5–4.5 mm.

(13–)21, green (tips red or dark red), densely tomentose proximally.

13 or 21, green or yellowish, 4–7+ mm, tomentose to glabrescent.

conspicuous (bractlets narrow, red-tinged).

conspicuous.

1–4+ in corymbiform arrays.

3–20+ in open or compact, corymbiform to subumbelliform arrays (subtended by smaller arrays arising from leaf axils).

1.5–2 mm, glabrous;

pappi 5–6 mm.

1.5–2.5 mm, usually hirtellous on ribs, sometimes glabrous;

pappi 5–6+ mm.

= 46.

= 44, 46, 92.