Flora of North America species comparison

glabrous or with tufts of white hairs in leaf axils.

tomentose, unevenly glabrescent.

usually 1 (branching distally, unevenly reddish, usually somewhat lax).

single.

evenly distributed;

petiolate (proximal) or sessile;

blades lanceolate to lance-linear, 3–10+ × (0.5–)1–2 cm, bases tapered (or auriculate), margins (sometimes revolute) unevenly dentate to subentire (mid and distal leaves similar, smaller, bases expanded, ± truncate to cordate, clasping).

reduced distally;

petiolate;

blades oblanceolate to elliptic, 4–12x 1–4 cm, bases tapered, margins weakly dentate or denticulate (denticles callous; mid leaves similar, smaller; distal leaves bractlike).

usually ± 8 or ± 13, rarely 0;

corolla laminae 8–10 mm.

± 13;

corolla laminae 6–10 mm.

± 21, (4–)5–8 mm, tips often with minute black dots.

(± 13) ± 21, 3–7 mm, tips black or brownish.

of 3–5+ linear to subulate bractlets (to 1.5 mm).

of 1–5 bractlets (longest 2–3 mm).

4–12 in loose, corymbiform arrays.

(3–)5–24 in corymbiform arrays.

hairy.

usually hairy, sometimes glabrous.

= 40.