Flora of North America species comparison

1, glabrous or sparsely tomentose.

1 or 2–6+, clustered (bases cyanic), glabrous or leaf axils sparsely tomentose.

(and proximal cauline) petiolate;

blades ovate, oblanceolate, or spatulate, 10–30 × 5–20 mm, bases tapering, sometimes obtuse, margins entire, subentire, or dentate.

(and proximal cauline) petiolate;

blades oblanceolate to spatulate (usually pinnately lobed, lateral lobes 1–6+ pairs, their bases petioluliform, terminal lobes usually larger than laterals, often reniform to ± orbiculate, midribs sometimes ± winged and/or toothed between the primary lobes), 40–120+ × 10–30+ mm, bases ± cuneate, ultimate margins subentire or irregularly crenate, dentate, or lobed.

abruptly reduced (sessile, clasping; bractlike, entire).

gradually reduced (± petiolate or sessile, clasping; often auriculate, pinnately dissected to pinnately lobed).

bracteate (bractlets red-tinged), densely lanate-tomentose.

bracteate, glabrous.

(8–)13;

corolla laminae 6–10+ mm.

8 or 13;

corolla laminae 3–7 mm.

35–50+;

corolla tubes 2.5–3.5 mm, limbs 3–4 mm.

30–45(–100+);

corolla tubes 1.5–2.5 mm, limbs (1.5–)2.5–3.5 mm.

(13–)21, green (tips red or dark red), densely tomentose proximally.

13 or 21, green (tips sometimes reddish), 3–7 mm, glabrous.

conspicuous (bractlets narrow, red-tinged).

inconspicuous or 0.

1–4+ in corymbiform arrays.

4–25+ in corymbiform arrays.

1.5–2 mm, glabrous;

pappi 5–6 mm.

1–1.5 mm, hirtellous on ribs;

pappi 3–5 mm.

= 46.

= 46.