Flora of North America species comparison

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

1 or 2–5+, loosely clustered, glabrous or leaf axils sparsely tomentose.

(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).

(and proximal cauline) petiolate;

blades narrowly lanceolate (pinnatifid, lateral lobes 6+ pairs, their bases petioluliform, terminal lobes smaller than laterals), 60–100 × 10–20 mm, bases tapering, ultimate margins dentate.

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

gradually reduced (sessile).

conspicuously bracteate, usually hairy.

bracteate or ebracteate, glabrous.

(5–)8 or 13;

corolla laminae 4–10 mm.

(8–)13;

corolla laminae 8–10+ mm.

40–60+;

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

40–55+;

corolla tubes 2–3 mm, limbs 2–3 mm.

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

(13–)21, green (tips yellow), 4–6+ mm, glabrous.

conspicuous.

inconspicuous.

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

6–20+ in corymbiform arrays.

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

pappi 5–6+ mm.

1–1.5 mm, hirtellous on ribs;

pappi 3.5–4.5 mm.

= 44, 46, 92.