Flora of North America species comparison

erect, hirsute.

erect to prostrate, glabrous or glabrate.

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).

cauline; mostly opposite, petioles 0–1 cm;

blades (light to dark green, 3-nerved at bases) lance-linear to lanceolate, 5–15 × 0.5–2.5 cm, bases cuneate, margins entire, abaxial faces glabrous or scabro-hispid, gland-dotted.

1–5 cm.

2–10 cm.

hemispheric, 10–25 mm diam.

hemispheric, 12–28 mm diam.

10–15;

laminae 15–20 mm.

12–16;

laminae 20–35 mm (abaxial faces gland-dotted).

40+;

corollas 5.5–6.5 mm, lobes yellow;

anthers dark brown or black, appendages dark or yellowish.

40+;

corollas 6.5–7.5 mm, lobes yellow;

anthers usually dull orange or orange-brown, sometimes yellowish, appendages dull orange to yellowish.

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.

12–18, lanceolate, 11–18 × 1.5–3 mm, apices acute to acuminate, abaxial faces gland-dotted.

1–7.

1–3.

4–4.5 mm, glabrate or distally puberulent;

pappi of 2 aristate scales 2.5–3.2 mm.

4–5 mm, glabrate;

pappi of 2 aristate scales 3–4.2 mm.

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

(lanceolate) 9–13 mm, subentire or 3-toothed (apices sparsely hairy, sometimes gland-dotted).

= 68.

= 34.