Flora of North America species comparison

closely lanate to floccose-tomentose, unevenly glabrescent.

loosely and sparsely arachnose to finely tomentose, unevenly glabrescent.

usually single, rarely clustered.

single.

reduced distally; obscurely petiolate;

blades oblanceolate to lanceolate, (4–)6–12+ × (1–)1.5–3 cm, bases tapering to winged petioles, margins dentate to denticulate (denticles dark, cartilaginous; mid and distal leaves smaller, bractlike).

progressively reduced distally;

petiolate;

blades ovate or oblanceolate to oblong, 7–20 × 2–3 cm, bases broadly to narrowly tapered, margins repand-denticulate or sublaciniate to subentire (mid and distal leaves sessile, smaller, weakly clasping).

usually ± 5, sometimes 0;

corolla laminae 5–8(–10) mm.

0 or 1–2;

corolla laminae 4–7 mm.

± 13, 3–5 mm, tips usually black.

± 8 or ± 13, 4–8 mm, tips green or black.

0 or of 1–3+ lance-deltate to lance-linear bractlets (mostly less than 1 mm).

0 or of 1–3+ oblong to linear bractlets (seldom more than 1.5 mm).

(10–)14–24(–30+) in corymbiform arrays.

(6–)15–30+ in corymbiform arrays.

glabrous.

glabrous.

= 40.