Flora of North America species comparison

erect, usually strigose or hispid to glabrate.

erect, glabrous.

cauline; opposite or alternate;

sessile;

blades (green or grayish, 1- or 3-nerved) lanceolate, 5–9 × 0.5–3.5 cm, bases ± cuneate, margins entire or irregularly toothed to lobed, faces strigose to strumose, gland-dotted (adaxial sometimes glaucous).

cauline; opposite or alternate;

petioles 0.3–3 cm;

blades (greenish, at least abaxially, 3-nerved at bases) lanceolate, 7.2–15.5 × 1.3–4 cm, bases cuneate, margins entire or serrate, abaxial faces tomentulose, densely gland-dotted.

4–13 cm.

1–3(–8) cm.

hemispheric, 10–24 mm diam.

cylindric, 5–7 mm diam.

14–20;

laminae ca. 8–11 mm.

5–8;

laminae 10–14 mm.

40+;

corollas 4.8–5.8 mm, lobes reddish;

anthers purplish, appendages reddish (style branches yellow).

15–22;

corollas 4–5.5 mm, lobes yellow;

anthers dark, appendages dark.

16–21, lanceolate, 6–7.5 × 1.8–2.5 mm (often subequal), (margins ciliate) apices acute, abaxial faces hispidulous or strigose to glabrate, gland-dotted.

12–17, lance-linear, 3–6.5 × 1.5–2.5 mm, (margins ciliate) apices acuminate, abaxial faces glabrate, not gland-dotted.

1–9.

(1–)3–15+.

2.7–3.5 mm, glabrate;

pappi of 2(–3) aristate scales 1.4–2.5 mm.

3.5–4.2 mm, glabrous;

pappi of 2 aristate scales 1.5–2.2 mm.

7–7.8 mm, entire or 3-toothed (apices obtuse to acute, hispid-ciliate to glabrate).

5–7 mm, 3-toothed (apices hairy).

= 34.

= 34.