Flora of North America species comparison

erect, usually hispid.

erect, glabrous or glabrate (glaucous).

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 0.5–1.2 cm;

blades (often 3-nerved distal to bases) lanceolate, 6–11 × 0.7–1.9 cm, bases cuneate, margins ± serrate, faces scabrous, not gland-dotted.

2–20 cm.

2–8 cm.

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

hemispheric, 10–15 mm diam.

(13–)17–30(–100+);

laminae 25–50 mm.

ca. 12;

laminae 12–25 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).

50+;

corollas 3.5–4 mm, lobes reddish purple;

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.

15–25, lanceolate, 8–9 × 1.5–2 mm, (margins ciliate) apices acuminate, abaxial faces glabrate.

1–9.

1–15.

(3–)4–5(–15) mm, glabrate;

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

2.5–3.2 mm, glabrous (± tuberculate);

pappi of 2 aristate scales 1.5–2 mm.

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

5–7, subentire to ± 3-toothed (apices purplish, glabrous).

= 34.

= 34.