Flora of North America species comparison

erect, hispid to strigoso-hispid proximally, glabrate distally.

erect, proximally villous to strigoso-hispid, distally hispid or glabrate.

basal and cauline; mostly opposite;

petioles 0.1–5.5 cm;

blades ovate to broadly ovate or suborbiculate, 7–15 × 4.5–15 cm, bases rounded to truncate or ± cuneate, margins entire or crenate to serrate, abaxial faces usually scabrous, sometimes ± strigose (hairs on midribs to 1 mm), not gland-dotted (cauline 9+ pairs proximal to heads, smaller).

mostly basal; opposite;

petioles 4–25 cm (usually winged at least 1/2 their lengths);

blades lanceolate to ovate, 7–26 × 3–10 cm, bases broadly cuneate to nearly truncate (often decurrent onto petioles), margins serrate to crenate, abaxial faces strigoso-hispid (hairs of midribs1+ mm), not gland-dotted (cauline to 8 pairs proximal to heads, ovate to elliptic, smaller).

0.5–10 cm.

0.3–17 cm.

hemispheric, 10–20 mm diam.

broadly hemispheric, 9–16 mm diam.

8–13;

laminae 15–20 mm (abaxial faces not gland-dotted).

10–15;

laminae 15–22 mm (abaxial faces not gland-dotted).

75+;

corollas 6–7 mm, lobes reddish;

anthers dark, appendages dark (style branches yellow).

75+;

corollas 4–6 mm, lobes reddish;

anthers dark, appendages dark (style branches yellow).

16–23, oblong to obovate, 8–10 × 3–5 mm, (margins ciliolate) apices obtuse to acute, sometimes mucronate, abaxial faces glabrous or glabrate.

15–22, broadly ovate to oblong, 7–9 × 4–5 mm, (margins ciliolate) apices obtuse to acute, sometimes mucronate, abaxial faces usually glabrous.

3–15+.

(1–)3–15+.

3–4 mm, glabrous or distally puberulent;

pappi of 2 aristate scales 2.5–2.7 mm.

2.8–3 mm, glabrous or distally puberulent;

pappi of 2 aristate scales 2.5–2.8 mm.

9–10 mm, entire or ± 3-toothed.

4–5.5 mm, ± 3-toothed to entire.

= 34.

= 34.