Flora of North America species comparison

nearly always glaucous, glabrous.

glabrous or sparsely floccose-tomentose when young.

single or clustered.

single or loosely clustered.

(thickish and turgid) progressively reduced distally;

petiolate;

blades ovate or obovate to lanceolate, 4–9(–15+) × 1.5–3(–4+) cm, bases tapered, margins wavy or subentire (often with callous denticles; mid and distal leaves sessile, bractlike).

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).

8–10;

corolla laminae 4–10 mm.

± 8;

corolla laminae 9–15 mm.

± 13 (± 21), 6–9 mm, tips green to brownish (not blackened).

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

of 1–3+ oblong to lance-linear bractlets (less than 3 mm).

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

(3–)8–24+ in corymbiform arrays.

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

glabrous.

glabrous.

= 40.

= 40, 80.