Flora of North America species comparison

erect, 5–30 dm, scabrous to scabro-hispidulous.

(silvery white) erect, usually tomentose or floccose.

cauline; mostly alternate;

petioles 0–2 cm;

blades (light green to gray-green, 1-nerved, conduplicate) lanceolate, 10–30 × 2–5.5 cm, bases cuneate, margins usually entire, sometimes serrulate, abaxial faces scabrous to scabro-hispid, 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.

1–11 cm.

2–8 cm.

hemispheric, 13–28 mm diam.

hemispheric, 20–30 mm diam.

10–25;

laminae (15–)25–40 mm.

15–20;

laminae 20–30 mm.

75+;

corollas 5–7 mm, lobes yellow;

anthers dark brown or black;

appendages usually yellow, sometimes partly dark.

150+;

corollas 6.5–7.5 mm, lobes reddish;

anthers dark, appendages dark (style branches reddish).

30–40, lanceolate, 14–20 × 2–3 mm, (margins ciliate) apices acute to attenuate, abaxial faces canescent, 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–)3–15 (often in racemiform to spiciform arrays).

1–5.

3–4 mm, glabrate;

pappi of 2 aristate scales 3–4.1 mm.

4–6 mm, glabrate;

pappi of 2 aristate scales 2–2.7 mm.

7–11 mm, entire or 3-toothed (apices greenish, mucronate, hairy).

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

= 34.

= 34.