Flora of North America species comparison

erect, usually hispid.

(green or purplish) erect, glabrous.

mostly cauline; mostly alternate;

petioles 2–20 cm;

blades lance-ovate to ovate, 10–40 × 5–40 cm, bases cuneate to subcordate or cordate, margins serrate, abaxial faces usually ± hispid, sometimes gland-dotted.

mostly basal; opposite;

petioles 0–1 cm;

blades linear to narrowly obovate, 13–30 × 0.7–2 cm, bases cuneate, margins entire or obscurely serrate, faces glabrous, not gland-dotted (cauline smaller).

2–20 cm.

4–11 cm.

hemispheric or broader, 15–40(–200+) mm diam.

hemispheric, 8–12 mm diam.

(13–)17–30(–100+);

laminae 25–50 mm.

8–13;

laminae 10–19 mm (abaxial faces not gland-dotted).

150+(–1000+);

corollas 5–8 mm (throats ± bulbous at bases), lobes usually reddish, sometimes yellow;

anthers brownish to black, appendages yellow or dark (style branches yellow).

35+;

corollas 4.2–5.5 mm, lobes yellow;

anthers dark, appendages dark.

20–30(–100+), ovate to lance-ovate, 13–25 × (3–)5–8 mm, (margins usually ciliate) apices abruptly narrowed, long-acuminate, abaxial faces usually hirsute to hispid, rarely glabrate or glabrous, usually gland-dotted.

18–23, linear-linear, 5–11 × 1–2.5 mm, (margins ciliolate) apices ± attenuate, abaxial faces glabrate or glabrous.

1–9.

3–12.

(3–)4–5(–15) mm, glabrate;

pappi of 2 lanceolate scales 2–3.5 mm plus 0–4 obtuse scales 0.5–1 mm.

2–3 mm, glabrate;

pappi of 2 aristate scales 1.4–2.5 mm.

9–11 mm, 3-toothed (middle teeth long-acuminate, glabrous or hispid).

6–8 mm, weakly 3-toothed (apices hairy).

= 34.

= 34.