Flora of North America species comparison

glabrous or sparsely floccose-tomentose when young.

lanate-arachnose or tomentose, unevenly glabrescent.

single or loosely clustered.

1(–2).

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).

(often purplish abaxially) reduced distally; petiolate;

blades ovate to subelliptic, (5–)6–10(–15) × (2.5–)3–5(–9) cm, bases tapered or contracted, margins subentire to denticulate (denticles callous; mid and distal leaves bractlike).

± 8;

corolla laminae 9–15 mm.

± 13;

corolla laminae 5–10 mm.

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

(± 13) ± 21, 5–7 mm, tips green.

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

of 2–5+ bractlets (largest to 3 mm).

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

(2–)5–12(–20) in corymbiform arrays.

glabrous.

hairy (especially on angles).

= 40, 80.

= 40.