Flora of North America species comparison

erect, hirsute.

erect, usually densely canescent, hispid, or strigillose, rarely ± hirsute 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).

mostly cauline; mostly alternate;

petioles 2–4 cm;

blades (often bluish green) lanceolate to deltate-ovate or ovate, 4–15 × 1–8 cm, bases subcordate or truncate to cuneate, margins entire or ± serrate, abaxial faces strigose, sparsely to densely, or not at all, gland-dotted.

1–5 cm.

4–15(–40) cm.

hemispheric, 10–25 mm diam.

± hemispheric, 10–24 mm diam.

10–15;

laminae 15–20 mm.

10–30;

laminae 15–20 mm.

40+;

corollas 5.5–6.5 mm, lobes yellow;

anthers dark brown or black, appendages dark or yellowish.

50–100+;

corollas 4.5–6 mm, lobes usually reddish, rarely yellow;

anthers reddish to purplish, appendages purplish (style branches reddish).

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.

14–25, lance-linear to lanceolate to lance-ovate, 10–14 × 1–4(–5) mm, (margins sometimes ciliate) apices short-attenuate, abaxial faces usually hispidulous, rarely sparsely hirsute to glabrate.

1–7.

1–5.

4–4.5 mm, glabrate or distally puberulent;

pappi of 2 aristate scales 2.5–3.2 mm.

3–4.5 mm, ± villous;

pappi of 2 aristate scales 1.5–3 mm plus 0–2 erose scales 0.3–0.5 mm.

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

4.5–7.5 mm, 3-toothed, middle teeth ± ciliate or bearded, hairs whitish, 0.5–0.7 mm.

= 68.

= 34.