Flora of North America species comparison

nearly always glaucous, glabrous.

(sometimes purple-tinged) floccose-tomentose (persistently on abaxial faces of leaves, glabrescent elsewhere).

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 oblanceolate to ovate, (1–)2–6 × 1–2.5 cm, bases tapered, margins dentate or incised to subpinnatifid (distal leaves bractlike).

8–10;

corolla laminae 4–10 mm.

usually ± 13, sometimes fewer or 0;

corolla laminae 8–12 mm.

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

± 13 or ± 21, 7–10 mm, tips green.

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

of 2–5 lance-linear bractlets (lengths 1/3–2/3 phyllaries).

(3–)8–24+ in corymbiform arrays.

1(–5).

glabrous.

glabrous.

= 40.

= 40.