Flora of North America species comparison

glabrous or sparsely floccose-tomentose when young.

glabrous or with tufts of white hairs in leaf axils.

single or loosely clustered.

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

evenly distributed; petiolate;

blades narrowly triangular, (3–)4–10+ × 2–6 cm, bases usually ± truncate, sometimes tapered, margins usually dentate, rarely subentire (distal leaves subsessile, smaller).

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).

± 8;

corolla laminae 9–15 mm.

usually ± 8 or ± 13, rarely 0;

corolla laminae 8–10 mm.

(± 8) ± 13 (± 21), 6–10 mm, tips usually green, rarely black.

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

of 2–6 bractlets (rarely more than 2 mm).

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

10–30(–60) in corymbiform to subracemiform arrays.

4–12 in loose, corymbiform arrays.

glabrous.

hairy.

= 40, 80.