Flora of North America species comparison

glabrous or sparsely floccose-tomentose when young.

glabrous.

single or loosely clustered.

1–(2–4).

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).

(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).

± 8;

corolla laminae 9–15 mm.

± 8 or ± 13;

corolla laminae 5–12 mm.

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

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

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

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

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

(1–)4–12 in corymbiform arrays.

glabrous.

glabrous.

= 40, 80.

= 40.