Flora of North America species comparison

glabrous.

glabrous or with tufts of white hairs in leaf axils.

1–(2–4).

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

(thickish-turgid) progressively reduced distally; petiolate;

blades broadly lanceolate to subelliptic, 2.5–15 × 1–5 cm, bases tapered, margins sharply dentate to subentire (some teeth callous; mid leaves sometimes larger than proximal; distal leaves sessile, smaller, often clasping).

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 or ± 13;

corolla laminae 5–12 mm.

usually ± 8 or ± 13, rarely 0;

corolla laminae 8–10 mm.

(± 8) ± 13 or ± 21, 5–9 mm, tips black (villous).

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

of (1–)3–6 linear to filiform bractlets (lengths to 1/3 phyllaries).

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

(1–)4–12 in corymbiform arrays.

4–12 in loose, corymbiform arrays.

glabrous.

hairy.

= 40.