Flora of North America species comparison

1 (striated, frequently hollow, often pink- to purple-tinged), glabrous or leaf axils sparsely tomentose.

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

(and proximal cauline) obscurely petiolate;

blades obovate to oblanceolate, sometimes lyrate (lateral lobes to 5 pairs, terminal lobes larger than laterals), 50–150+ × 10–30+ mm, bases tapering, ultimate margins crenate to irregularly undulate.

(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).

gradually reduced (weakly clasping, similar to basal).

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

bracteate, glabrous or bases tomentose.

bracteate, glabrous or sparsely tomentose.

(8–)13;

corolla laminae 7–9 mm.

8 or 13;

corolla laminae 5–10 mm.

35–50+;

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

35–60+;

corolla tubes 2–4 mm, limbs 2.5–4 mm.

(13–)21, green, 5–7 mm, glabrous.

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

conspicuous (bractlets 2.5–4 mm).

conspicuous.

8–30+ in umbelliform or cymiform arrays (robust plants with multiple arrays).

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

1–1.5 mm, sparsely hirtellous on ribs or glabrous;

pappi 3–4 mm.

1–2.5 mm, glabrous;

pappi 3–6 mm.

= 46.

= 46, 92.