Flora of North America species comparison

1 or 2–3, loosely clustered, glabrous.

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

(and proximal cauline) petiolate;

blades ± orbiculate to oblong, or lyrate (lateral lobes 1–3 pairs, sinuses usually rounded, midribs usually winged), 50–120+ × 30–70+ mm, bases cordate to subcordate, margins shallowly to deeply incised.

(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 (petiolate or sessile and clasping; lanceolate, incised).

abruptly reduced (bractlike).

ebracteate or inconspicuously bracteate, glabrous.

inconspicuously bracteate, glabrous or densely hairy.

8 or 13;

corolla laminae 10–15+ mm.

0, 8, or 13;

corolla laminae 5–10 mm.

30–45+;

corolla tubes 3–4 mm, limbs 3.5–4.5 mm.

30–50+;

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

(8), 13, or 21, dark green, 5–8 mm, glabrous or sparsely tomentose proximally.

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

conspicuous.

conspicuous (bractlets often cyanic).

8–15+ in corymbiform or subumbelliform arrays.

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

2.5–3.5 mm, glabrous;

pappi 5–7 mm.

1.5–2 mm, glabrous;

pappi 5–6 mm.

= 46.

= 44, 46.