Flora of North America species comparison

glabrous or sparsely and unevenly tomentose when young.

(often sea-green, usually glaucous) glabrous.

usually 1.

single or 2–4 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).

progressively reduced distally; ± petiolate;

blades elliptic to oblanceolate, 5–20+ × (1–)2–10 cm, bases tapered, margins denticulate or entire (mid and distal leaves sessile, bractlike).

0.

(0) ca. 5;

corolla laminae 3–5 mm.

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

± 8 or ± 13, 5–8 mm, tips frequently black.

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

of 2–4+ bractlets (less than 2 mm).

8–20 in loose, corymbiform arrays.

20–40(–80+) in compound corymbiform arrays.

usually sparsely hairy, sometimes nearly glabrous.

glabrous.

= 40.

= 40.