Flora of North America species comparison

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

1 or 3–5, loosely clustered, glabrous or bases and leaf axils 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, relatively thick and turgid) petiolate (petioles sometimes winged);

blades elliptic-ovate or suborbiculate to spatulate, 15–25 × 5–20 mm, bases tapering, margins entire or dentate (at apices).

gradually reduced (weakly clasping, similar to basal).

abruptly reduced (becoming sessile, bractlike).

bracteate, glabrous or bases tomentose.

ebracteate, glabrous.

(8–)13;

corolla laminae 7–9 mm.

(0) or 8–13;

corolla laminae 7–9 mm.

35–50+;

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

35–50+;

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

(13–)21, green, 5–7 mm, glabrous.

13, cyanic, 8–9 mm, glabrous or loosely tomentose proximally.

conspicuous (bractlets 2.5–4 mm).

inconspicuous.

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

1–2(–4).

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

pappi 3–4 mm.

1–2 mm, glabrous;

pappi 3–4.5 mm.

= 46.