Flora of North America species comparison

1 or 2–3, loosely clustered, glabrous or glabrate.

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

petiolate;

blades elliptic-ovate, oblong, or subreniform, 20–50 × 10–40+ mm, bases subcordate, truncate, or cuneate, margins usually crenate-dentate to coarsely dentate-lacerate, seldom subentire.

(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 reduced (petiolate, resembling basals, sublyrate or dissected; distal sessile, subentire to pinnatifid).

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).

ebracteate (or bractlets inconspicuous), glabrous or glabrate.

inconspicuously bracteate or ebracteate, glabrous.

0 or 8–10;

corolla laminae (deep yellow) 3–5 mm.

8 or 13;

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

60–70+;

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

45–60+;

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

13 or 21, green (tips sometimes reddish), 7–9 mm, glabrous.

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

conspicuous (bractlets green, tips sometimes reddish).

conspicuous (bases of bractlets swollen).

8–20+ in subumbelliform arrays.

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

1–2 mm, glabrous;

pappi 3–4 mm.

0.75–1.5 mm, glabrous, pappi 3–4 mm.

= 46, 126, 176, 184.

= 46.