Flora of North America species comparison

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

1 or 2–4, loosely clustered, glabrous or sparsely tomentose proximally.

(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).

petiolate;

blades lanceolate to narrowly elliptic or oblanceolate, 30–60+ × 10–20+ mm, bases tapering, sometimes obtuse, margins subentire to dentate or serrate.

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

gradually reduced (proximals petiolate, sublyrate; mids sessile, not clasping, lanceolate, dissected, incised, or lacerate; distals sessile, bractlike).

bracteate, glabrous or sparsely tomentose.

usually bracteate, sometimes ebracteate, glabrous.

8 or 13;

corolla laminae 5–10 mm.

0, 8, or 13;

corolla laminae (pale yellow) 5–10+ mm.

35–60+;

corolla tubes 2–4 mm, limbs 2.5–4 mm.

50–65+;

corolla tubes 2–3 mm, limbs 2–3 mm.

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

13 or 21, green, 5–8+ mm, glabrous.

conspicuous.

inconspicuous.

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

2–10+ in loose or compact, corymbiform arrays.

1–2.5 mm, glabrous;

pappi 3–6 mm.

1–2 mm, usually glabrous, sometimes hispidulous on ribs;

pappi 3.5–4.5 mm.

= 46, 92.

= 44, 46, 92.