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, loosely clustered, usually glabrous or glabrescent, sometimes sparsely tomentose throughout, axils (basal leaves) tomentose.

(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) 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 reduced (weakly clasping, similar to basal).

gradually reduced (sessile).

bracteate, glabrous or bases tomentose.

conspicuously bracteate, glabrous or tomentose.

(8–)13;

corolla laminae 7–9 mm.

8–13;

corolla laminae 7–10 mm.

35–50+;

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

40–50+;

corolla tubes 4–5 mm, limbs 3–4 mm.

(13–)21, green, 5–7 mm, glabrous.

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

conspicuous (bractlets 2.5–4 mm).

conspicuous.

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

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

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

pappi 3–4 mm.

2–3 mm, glabrous or hirtellous on ribs;

pappi 5–6 mm.

= 46.

= 46, 92.