Flora of North America species comparison

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

usually 1, rarely 2–3, clustered, irregularly arachnoid-tomentose to lanate-tomentose or glabrescent.

(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 turgid) petiolate;

blades broadly ovate or lyrate (± pinnately lobed, lateral lobes 1–3 pairs, smaller than terminals), 10–30+ × 10–20+ mm, bases tapering to cuneate, ultimate margins subentire or crenate to coarsely dentate (abaxial faces tomentose).

gradually reduced (weakly clasping, similar to basal).

gradually reduced (sessile; bractlike, entire).

bracteate, glabrous or bases tomentose.

bracteate, irregularly tomentose.

(8–)13;

corolla laminae 7–9 mm.

8–13;

corolla laminae 8–10 mm.

35–50+;

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

60–75+;

corolla tubes 2.5–4 mm, limbs 3.5–5 mm.

(13–)21, green, 5–7 mm, glabrous.

(8–)13 or 21, green, 7–10+ mm, densely tomentose proximally, glabrescent distally (tips hair-tufted).

conspicuous (bractlets 2.5–4 mm).

inconspicuous.

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

3–6 in cymiform arrays.

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

pappi 3–4 mm.

2–2.5 mm, glabrous;

pappi 5–7 mm.

= 46.

= 46.