Flora of North America species comparison

(sometimes reddish-tinged, especially proximally) glabrous.

arachno-tomentose to sericeous-lanate (especially on abaxial faces of phyllaries), unevenly glabrescent.

1–3 (arching upward).

single (turgid).

evenly distributed (proximal often withering before flowering); obscurely petiolate or sessile;

blades oblanceolate to lance-linear (sometimes with 1–2 lateral lobes), 2–4 cm × 3–5 mm, bases subdecurrent, weakly clasping, margins entire or wavy (often revolute).

evenly distributed (proximal withering before flowering);

subsessile or petiolate;

blades obovate to oblanceolate, 5–15(–25) × 2–6(–10) cm, bases tapered, margins serrate-dentate to denticulate or subentire (distal leaves slightly smaller).

± 8;

corolla laminae 5–10 mm.

usually ± 21, rarely 0;

corolla laminae 20–25 mm.

± 13, 5–7(–8) mm.

± 21, 8–15 mm (sometimes purplish or pinkish-tinged), tips greenish.

of 3–5+ (inconspicuous) bractlets.

of 6–10 linear bractlets (longest nearly equaling phyllaries).

1(–4).

1–5(–15+) in corymbiform arrays (involucres notably large, 20–40 mm diam.).

glabrous.

glabrous.

= 40.