Flora of North America species comparison

erect, hirsute.

(green or purplish) erect, glabrous.

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 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).

1–5 cm.

4–11 cm.

hemispheric, 10–25 mm diam.

hemispheric, 8–12 mm diam.

10–15;

laminae 15–20 mm.

8–13;

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

40+;

corollas 5.5–6.5 mm, lobes yellow;

anthers dark brown or black, appendages dark or yellowish.

35+;

corollas 4.2–5.5 mm, lobes yellow;

anthers dark, appendages dark.

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.

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

1–7.

3–12.

4–4.5 mm, glabrate or distally puberulent;

pappi of 2 aristate scales 2.5–3.2 mm.

2–3 mm, glabrate;

pappi of 2 aristate scales 1.4–2.5 mm.

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

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

= 68.

= 34.