Flora of North America species comparison

(often reddish or purplish) erect, hirsute or villous.

(green or purplish) erect, glabrous.

mostly cauline; mostly alternate;

petioles 0.5–2 cm (broadly winged);

blades lanceolate to ovate, 6.5–20 × 3.2–9 cm, bases gradually narrowed (onto petioles), margins entire or serrate, abaxial faces hirsute to tomentose, gland-dotted.

mostly basal; opposite;

petioles 0–1 cm;

blades linear to narrowly obovate, 13–30 × 0.7–2 cm, bases cuneate, margins entire or obscurely serrate, faces glabrous, not gland-dotted (cauline smaller).

1–3 cm.

4–11 cm.

hemispheric, 15–27 mm diam.

hemispheric, 8–12 mm diam.

10–20;

laminae (often light yellow) 18–30 mm.

8–13;

laminae 10–19 mm (abaxial faces not gland-dotted).

90+;

corollas 8–8.5 mm, lobes yellow;

anthers dark, appendages dark.

35+;

corollas 4.2–5.5 mm, lobes yellow;

anthers dark, appendages dark.

20–30 (squarrose to reflexed, at least tips), lanceolate, 10–21 × 3–5 mm (notably surpassing discs), apices acute to attenuate, abaxial faces hispid to villous, densely gland-dotted (at least toward apices).

18–23, linear-linear, 5–11 × 1–2.5 mm, (margins ciliolate) apices ± attenuate, abaxial faces glabrate or glabrous.

1–5.

3–12.

5–7 mm, glabrate;

pappi of 2 aristate scales 2.4–2.6 mm.

2–3 mm, glabrate;

pappi of 2 aristate scales 1.4–2.5 mm.

9–11 mm, 3-toothed (gland-dotted).

6–8 mm, weakly 3-toothed (apices hairy).

= 102.

= 34.