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, clustered (often scapiform), usually floccose, lanate-tomentose, or canescent, sometimes glabrate.

(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.

(either of two forms): usually (1) sessile, sometimes petiolate;

blades narrowly lanceolate to elliptic, 15–40+ × 5–25 mm, bases tapering, margins entire or dentate toward apices (often revolute), sometimes (2) petiolate;

blades ovate to orbiculate, 10–20 × 5–15 mm, bases tapering to abruptly contracted, margins entire or wavy, sometimes dentate toward apices.

gradually reduced (weakly clasping, similar to basal).

abruptly reduced (bractlike).

bracteate, glabrous or bases tomentose.

inconspicuously bracteate, glabrous or densely hairy.

(8–)13;

corolla laminae 7–9 mm.

0, 8, or 13;

corolla laminae 5–10 mm.

35–50+;

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

30–50+;

corolla tubes 2.5–3.5 mm, limbs 3–4 mm.

(13–)21, green, 5–7 mm, glabrous.

13 or 21, green (tips sometimes cyanic), 4–10 mm, glabrous or hairy.

conspicuous (bractlets 2.5–4 mm).

conspicuous (bractlets often cyanic).

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

1–5(–8) in cymiform to subumbelliform arrays.

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

pappi 3–4 mm.

1.5–2 mm, glabrous;

pappi 5–6 mm.

= 46.

= 44, 46.