Flora of North America species comparison

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

glabrous.

usually single, sometimes loosely clustered.

usually single.

± 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 (basal and proximal withering before flowering);

petiolate (petioles purplish, weakly winged, 4–5 cm);

blades broadly triangular-ovate to suborbiculate, 2–4(–5) × 2.5–3 cm, bases truncate to ± cuneate, margins coarsely spinulose-dentate (mid leaves similar, persistent).

± 13;

corolla laminae 12–15 mm.

“few”;

corolla laminae ca. 7 mm (inconspicuous, equaling or barely surpassing phyllaries).

± 13, 5–7 mm, tips green or greenish.

± 13, 7–9 mm, tips green.

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

of “few,” linear bractlets.

20–60 in corymbiform arrays.

nodding, 4–6.

hairy.

glabrous.