Flora of North America species comparison

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

1 or 2–3+, clustered, glabrous or leaf axils 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).

petiolate;

blades cordate to reniform, 20–60 × 20–60 mm, bases abruptly contracted or ± cordate, margins crenate to crenate-serrate (apices rounded, faces glabrous).

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

gradually reduced (petiolate or sessile, not clasping; blades oblong to lyrate, lateral lobes 2–4 pairs).

conspicuously bracteate, usually hairy.

bracteate, glabrous or sparsely tomentose.

(5–)8 or 13;

corolla laminae 4–10 mm.

(8–)10–13;

corolla laminae 8–10+ mm.

40–60+;

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

55–70+;

corolla tubes 3–3.5 mm, limbs 2–2.5 mm.

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

13–21, green (tips purple or black), 6–8 mm, glabrous or sparsely tomentose proximally.

conspicuous.

inconspicuous.

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

6–20+ in corymbiform to subumbelliform arrays.

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

pappi 5–6+ mm.

1–1.5 mm, glabrous;

pappi 4.5–5.5 mm.

= 44, 46, 92.

= 44.