Flora of North America species comparison

erect, usually hispid.

(silvery white) erect, usually tomentose or floccose.

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 alternate;

petioles 2–10 cm;

blades ovate to lance-ovate, 15–25 × 10–20 cm, bases truncate to subcordate, margins entire or serrulate, abaxial faces usually floccose, sericeous, or tomentose, gland-dotted.

2–20 cm.

2–8 cm.

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

hemispheric, 20–30 mm diam.

(13–)17–30(–100+);

laminae 25–50 mm.

15–20;

laminae 20–30 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).

150+;

corollas 6.5–7.5 mm, lobes reddish;

anthers dark, appendages dark (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.

20–35, ovate to lance-ovate, 15–18 × (2–)5–8 mm, apices long-attenuate, abaxial faces usually densely white-villous, gland-dotted.

1–9.

1–5.

(3–)4–5(–15) mm, glabrate;

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

4–6 mm, glabrate;

pappi of 2 aristate scales 2–2.7 mm.

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

10–11 mm, 3-toothed (apices glabrous or sparsely villous).

= 34.

= 34.