Flora of North America species comparison

erect, hirsute.

(silvery white) erect, usually tomentose or floccose.

cauline; mostly opposite;

petioles 0.4–2 cm;

blades (3-nerved from bases) lanceolate to ovate, 6.5–18 × 1–8 cm, bases truncate to broadly rounded or cuneate, margins subentire to serrate (flat), abaxial faces ± hirsute, gland-dotted (adaxial not 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.

1–5 cm.

2–8 cm.

hemispheric, 10–25 mm diam.

hemispheric, 20–30 mm diam.

10–15;

laminae 15–20 mm.

15–20;

laminae 20–30 mm.

40+;

corollas 5.5–6.5 mm, lobes yellow;

anthers dark brown or black, appendages dark or yellowish.

150+;

corollas 6.5–7.5 mm, lobes reddish;

anthers dark, appendages dark (style branches reddish).

18–25 (usually loose, spreading, not reflexed), lanceolate, 7–12 × 2.5–3.5 mm, (margins ciliate) apices acute to short-acuminate, abaxial faces not 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.

1–7.

1–5.

4–4.5 mm, glabrate or distally puberulent;

pappi of 2 aristate scales 2.5–3.2 mm.

4–6 mm, glabrate;

pappi of 2 aristate scales 2–2.7 mm.

7–10 mm, 3-toothed (apices yellowish, hairy).

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

= 68.

= 34.