Flora of North America species comparison

glabrous or sparsely and unevenly tomentose when young.

(sometimes purple-tinged) floccose-tomentose (persistently on abaxial faces of leaves, glabrescent elsewhere).

usually 1.

single or loosely clustered.

evenly distributed; petiolate;

blades ovate to oblanceolate, 2–10 × 0.5–2(–4) cm, bases tapered, margins lobulate to dentate, ultimate margins often secondarily dentate to denticulate (distal leaves sessile).

± evenly distributed; petiolate;

blades oblanceolate to ovate, (1–)2–6 × 1–2.5 cm, bases tapered, margins dentate or incised to subpinnatifid (distal leaves bractlike).

0.

usually ± 13, sometimes fewer or 0;

corolla laminae 8–12 mm.

± 21, 4–6 mm, tips usually green, sometimes black.

± 13 or ± 21, 7–10 mm, tips green.

of 2–4(–6+) bractlets (prominent, black-tipped, lengths about 1/4 phyllaries).

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

8–20 in loose, corymbiform arrays.

1(–5).

usually sparsely hairy, sometimes nearly glabrous.

glabrous.

= 40.

= 40.