Flora of North America species comparison

1 or 2–5, clustered, usually glabrous, sometimes sparsely floccose-tomentose proximally and in leaf axils.

1 or 3–5, loosely clustered, glabrous or bases and leaf axils tomentose.

(and proximal cauline, relatively thick and turgid) petiolate;

blades spatulate to oblanceolate, or ovate to orbiculate, 20–40+ × 10–30+ mm, bases tapering to abruptly contracted or subcordate, margins entire, crenate, dentate, or weakly lobulate (faces usually glabrous, sometimes hairy).

(and proximal cauline, relatively thick and turgid) petiolate (petioles sometimes winged);

blades elliptic-ovate or suborbiculate to spatulate, 15–25 × 5–20 mm, bases tapering, margins entire or dentate (at apices).

gradually to abruptly reduced (± petiolate or sessile; entire or subentire).

abruptly reduced (becoming sessile, bractlike).

bracteate, glabrous or sparsely tomentose.

ebracteate, glabrous.

8 or 13;

corolla laminae 5–10 mm.

(0) or 8–13;

corolla laminae 7–9 mm.

35–60+;

corolla tubes 2–4 mm, limbs 2.5–4 mm.

35–50+;

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

(8–)13 or 21, green (tips sometimes cyanic), 4–7+ mm, glabrous.

13, cyanic, 8–9 mm, glabrous or loosely tomentose proximally.

conspicuous.

inconspicuous.

2–20+ in loose, corymbiform or subumbelliform arrays.

1–2(–4).

1–2.5 mm, glabrous;

pappi 3–6 mm.

1–2 mm, glabrous;

pappi 3–4.5 mm.

= 46, 92.