Flora of North America species comparison

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

1 or 2–3, loosely clustered, glabrous.

(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.

(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.

abruptly reduced (bractlike).

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

inconspicuously bracteate, glabrous or densely hairy.

ebracteate or inconspicuously bracteate, glabrous.

0, 8, or 13;

corolla laminae 5–10 mm.

8 or 13;

corolla laminae 10–15+ mm.

30–50+;

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

30–45+;

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

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

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

conspicuous (bractlets often cyanic).

conspicuous.

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

8–15+ in corymbiform or subumbelliform arrays.

1.5–2 mm, glabrous;

pappi 5–6 mm.

2.5–3.5 mm, glabrous;

pappi 5–7 mm.

= 44, 46.

= 46.