Flora of North America species comparison

erect, usually hispid.

erect to ± procumbent, hispid, hispid-hirsute, or hirsute.

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 cauline; mostly opposite;

petioles 5–9 cm;

blades deltate to ovate (sometimes constricted near middles, subsp. praecox), 3–9 × 2–7 cm, bases cordate, cuneate, or truncate, margins serrate to serrulate, abaxial faces hirsute to hispid, usually not gland-dotted.

2–20 cm.

15–40 cm.

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

hemispheric, 13–18 mm diam.

(13–)17–30(–100+);

laminae 25–50 mm.

11–16;

laminae 16–26 mm.

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 5–6 mm, lobes reddish;

anthers dark, appendages purplish red (style branches reddish).

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.

30–39, lanceolate, 9–15 × 2–4 mm, apices short-attenuate to short-acuminate (subsp. praecox), abaxial faces hispidulous to hispid-hirsute.

1–9.

1–3.

(3–)4–5(–15) mm, glabrate;

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

2.5–3.3 mm, ± villous;

pappi of 2 aristate scales 1.2–1.5 mm.

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

6.5–8 mm, 3-toothed (middle teeth acuminate, equaling or slightly surpassing discs, apices puberulent or bearded, hairs whitish).

= 34.