Flora of North America species comparison

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

(often reddish) erect, pilose to appressed-hairy proximally.

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).

mostly basal; opposite;

petioles 2.5–10 cm;

blades oblong-lanceolate or elliptic to ovate, 5–20 × 1.5–7 cm, bases cuneate, margins entire or serrulate, abaxial faces scabrous to hispidulous, gland-dotted (cauline usually smaller, rarely 2–4 pairs well developed).

0.3–17 cm.

1–14 cm.

broadly hemispheric, 9–16 mm diam.

cylindric, 9–14 mm diam.

10–15;

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

8–14;

laminae 18–22 mm (abaxial faces densely gland-dotted).

75+;

corollas 4–6 mm, lobes reddish;

anthers dark, appendages dark (style branches yellow).

50+;

corollas 4.5–5.5 mm, lobes yellow;

anthers dark brown or black, appendages yellow.

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

20–25, lanceolate, 4.5–7(–11) × 1.5–2.5 mm, (margins usually ciliate) apices acute to short-acuminate, abaxial faces glabrate to sparsely pilose (hairs moniliform), not gland-dotted.

(1–)3–15+.

1–4(–12).

2.8–3 mm, glabrous or distally puberulent;

pappi of 2 aristate scales 2.5–2.8 mm.

3–4(–5) mm, sparsely villous or glabrate;

pappi of 2 aristate scales 1.5–2.8 mm plus 0–4 deltate scales 0.4–1 mm.

4–5.5 mm, ± 3-toothed to entire.

5–7 mm, subentire to 3-toothed (shortly mucronate).

= 34.

= 34 (subspecies unknown).