Flora of North America species comparison

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

1 or 2–5, loosely clustered, usually glabrous or glabrescent, sometimes sparsely tomentose throughout, axils (basal leaves) 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) petiolate;

blades obovate, oblanceolate, spatulate, or lyrate to sublyrate (± pinnately lobed, lateral lobes 3–6 pairs, smaller than terminal lobes), 40–80+ × 10–30+ mm, bases tapering, ultimate margins incised to dentate.

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

gradually reduced (sessile).

bracteate, glabrous or sparsely tomentose.

conspicuously bracteate, glabrous or tomentose.

8 or 13;

corolla laminae 5–10 mm.

8–13;

corolla laminae 7–10 mm.

35–60+;

corolla tubes 2–4 mm, limbs 2.5–4 mm.

40–50+;

corolla tubes 4–5 mm, limbs 3–4 mm.

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

13–21, green (tips often yellow), 4–9+ mm, glabrous or sparsely tomentose (at least proximally).

conspicuous.

conspicuous.

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

10–30+ in open, corymbiform or subumbelliform arrays.

1–2.5 mm, glabrous;

pappi 3–6 mm.

2–3 mm, glabrous or hirtellous on ribs;

pappi 5–6 mm.

= 46, 92.

= 46, 92.