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, loosely clustered, glabrous.

(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.

petiolate;

blades ovate, obovate, or elliptic, 20–40+ × 10–30+ mm, bases tapering to contracted, margins subentire to crenate-dentate.

gradually reduced (weakly clasping, similar to basal).

abruptly reduced (sessile, often weakly clasping, dentate to subentire; distals sessile, lanceolate, weakly clasping, entire or dentate).

bracteate, glabrous or bases tomentose.

sparsely bracteate or ebracteate, glabrous.

(8–)13;

corolla laminae 7–9 mm.

13;

corolla laminae 7–12+ mm.

35–50+;

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

40–55+;

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

(13–)21, green, 5–7 mm, glabrous.

(13–)21, green (tips sometimes cyanic), 5–8+ mm, glabrous.

conspicuous (bractlets 2.5–4 mm).

(bractlets frequently cyanic).

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

1(–5; sometimes subtended by 2 relatively large bractlets).

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

pappi 3–4 mm.

1.5–2.5 mm, glabrous;

pappi 4–6 mm.

= 46.

= 46, 90.