Flora of North America species comparison

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

usually 1, rarely 2–3, clustered, glabrous.

(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).

(relatively thick and turgid) petiolate (petioles broad-winged or narrow, delicate);

blades ovate, ovate-orbiculate, oblong-lanceolate, orbiculate, suborbiculate, reniform, or subreniform, 10–50+ × 10–40 mm, bases tapering or subcordate to abruptly contracted, margins entire or crenate.

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

gradually reduced (proximal and mid sometimes as large as or larger than basal, sessile, oblanceolate to obovate, sometimes lyrate, sometimes auriculate and/or clasping, subentire to irregularly dissected; distal usually sessile, bractlike, sometimes larger).

conspicuously bracteate, usually hairy.

inconspicuously bracteate or ebracteate, glabrous.

(5–)8 or 13;

corolla laminae 4–10 mm.

8 or 13;

corolla laminae (deep yellow to orange) 5–8+ mm.

40–60+;

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

45–60+;

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

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

(8–)13 or 21, green (tips cyanic), 5–7+ mm, glabrous.

conspicuous.

conspicuous (bases of bractlets swollen).

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

1–6+ in congested, corymbiform or subumbelliform arrays.

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

pappi 5–6+ mm.

0.75–1.5 mm, glabrous, pappi 3–4 mm.

= 44, 46, 92.

= 46.