Flora of North America species comparison

1, glabrous or leaf axils sparsely tomentose.

1 or 3–4+, clustered, sparsely tomentose to glabrescent.

(and proximal cauline) petiolate;

blades narrowly ovate to oblong-lanceolate, 30–70+ × 10–20+ mm, bases abruptly contracted to subcordate, margins usually serrate-dentate, sometimes subcrenate (apices acute).

(and proximal cauline, relatively thick and turgid) petiolate;

blades narrowly elliptic or lanceolate to oblanceolate, 40–70+ × 5–20+ mm, bases tapering, margins entire or subentire to weakly and irregularly dentate (especially at apices).

gradually reduced (± sessile; lacerate to subcrenate).

gradually reduced (distal sessile, bractlike).

bracteate, glabrous.

bracteate (bractlets usually red-tipped), sparsely tomentose to glabrate.

8–13;

corolla laminae 4–7 mm.

5 or 8;

corolla laminae 12–16 mm.

50–70+;

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

50–60+;

corolla tubes 3.5–4.5 mm, limbs 4.5–5.5 mm.

13 or 21, light green (tips sometimes black), 5–8 mm, glabrous.

13 or 21, dark green proximally, becoming light green distally (tips red), 7–11+ mm, floccose-tomentose proximally.

conspicuous.

conspicuous (bractlets red-tipped).

8–20+ in loose, corymbiform arrays.

5–12+ in open, cymiform arrays.

1–1.5 mm, glabrous;

pappi 5–5.5 mm.

2.5–3.5 mm, glabrous;

pappi 7–8 mm.

= 44.

= 92.