Flora of North America species comparison

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

erect, hispid or strigose.

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.

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.

1–3 cm.

0.5–5.5 cm.

hemispheric, 15–27 mm diam.

cylindric, 7–14 mm diam.

10–20;

laminae (often light yellow) 18–30 mm.

8–13;

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

90+;

corollas 8–8.5 mm, lobes yellow;

anthers dark, appendages dark.

30+: corollas 5–6 mm, lobes yellow;

anthers dark brown to black, 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).

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.

1–5.

1–6.

5–7 mm, glabrate;

pappi of 2 aristate scales 2.4–2.6 mm.

3–4 mm, sparsely hairy;

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

9–11 mm, 3-toothed (gland-dotted).

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

= 102.

= 34.