Flora of North America species comparison

erect, glabrous.

erect, hispid or strigose.

cauline; opposite (proximal or all) or alternate (distal);

petioles (1–)2–5 cm;

blades (green, 3-nerved distal to bases) lanceolate to ovate, 7–21 × 4–10 cm, bases rounded to cuneate (often shortly decurrent onto petioles), margins usually serrate (moderately to notably in larger leaves), abaxial faces ± scabro-hispidulous, relatively sparsely gland-dotted.

cauline; opposite;

petioles 0.4–3 cm;

blades (ashy green, usually 3-nerved from bases) lanceolate to ovate, 4–15 × 1–5 cm, bases ± cuneate to truncate, margins entire or serrate, faces strigoso-hispid, gland-dotted.

2–12 cm (not gland-dotted).

0.5–5.5 cm.

cylindric, 7–14 mm diam.

8–12;

laminae 20–25 mm.

8–13;

laminae 15–20 mm (abaxial faces gland-dotted).

40+;

corollas 6.5–7.2 mm, lobes yellow;

anthers usually dark brown to black (rarely reddish brown), appendages dark or reddish brown.

30+: corollas 5–6 mm, lobes yellow;

anthers dark brown to black, appendages dark.

20–25 (often reflexed), lance-linear to lanceolate, 11–16 × 2–3 mm (sometimes leaflike, longest surpassing discs by 1/2+ their lengths), (margins ciliate) apices attenuate, abaxial faces strigillose to glabrate, not gland-dotted.

15–25 (loosely appressed), lanceolate to ovate, 3.5–7.5 × 2–3.5 mm, apices acute to acuminate, abaxial faces ± hispid or strigose (hairs whitish), gland-dotted.

3–6(–10).

1–6.

3.5–5 mm;

pappi of 2 aristate scales 3–4 mm.

3–4 mm, sparsely hairy;

pappi of 2 aristate scales 4–4.5 mm plus 0–4 deltate scales 0.5–1 mm.

-lucres hemispheric, 12–25 mm diam.

8–10 mm, 3-toothed.

7–8 mm, entire or ± 3-toothed (apices acute to acuminate, hispid).

= 34, 68.

= 34.