Flora of North America species comparison

floccose-tomentose, unevenly glabrescent (persistently hairy on abaxial leaf faces).

floccose-tomentose to canescent, sometimes unevenly glabrescent.

usually single, sometimes loosely clustered.

1–(2–5).

± evenly distributed (basal and proximal sometimes withering before flowering);

petiolate (proximal) or sessile;

blades ovoid or oblong to spatulate (usually pinnatifid to pinnatisect, lobes ± lanceolate to linear), (3–)5–12 × (1.5–)2–4 cm, bases tapered to ± truncate, ultimate margins (often revolute) dentate or entire.

progressively reduced distally;

petiolate;

blades oblong-ovate to oblanceolate, (5–)10–30 × 1.5–4(–6) cm, bases tapered, margins dentate (denticles, dark, callous; mid leaves similar, sessile, smaller; distal leaves bractlike).

± 13;

corolla laminae 12–15 mm.

(± 3) ± 5;

corolla laminae 5–8 mm.

± 13, 5–7 mm, tips green or greenish.

(± 5) ± 8, 6–8 mm, tips black.

of 4–6(–10) bractlets (lengths to 1/2 phyllaries).

of 2–5 linear bractlets (lengths to 1/3 phyllaries).

20–60 in corymbiform arrays.

20–60+ in corymbiform or subpaniculiform arrays.

hairy.

glabrous.

= 40. (A report of 2n = 46 is presumably erroneous.)