Flora of North America species comparison

1, glabrous or leaf axils sparsely tomentose.

1 or 3–5, clustered (often scapiform), usually floccose, lanate-tomentose, or canescent, sometimes glabrate.

(and proximal cauline) petiolate;

blades narrowly ovate to oblong-lanceolate, 30–70+ × 10–20+ mm, bases abruptly contracted to subcordate, margins usually serrate-dentate, sometimes subcrenate (apices acute).

(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 (± sessile; lacerate to subcrenate).

abruptly reduced (bractlike).

bracteate, glabrous.

inconspicuously bracteate, glabrous or densely hairy.

8–13;

corolla laminae 4–7 mm.

0, 8, or 13;

corolla laminae 5–10 mm.

50–70+;

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

30–50+;

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

13 or 21, light green (tips sometimes black), 5–8 mm, glabrous.

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

conspicuous.

conspicuous (bractlets often cyanic).

8–20+ in loose, corymbiform arrays.

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

1–1.5 mm, glabrous;

pappi 5–5.5 mm.

1.5–2 mm, glabrous;

pappi 5–6 mm.

= 44.

= 44, 46.