Flora of North America species comparison

erect, scabro-hispid to hirsute (sometimes glaucous).

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

mostly cauline; opposite or alternate proximally, usually alternate distally;

petioles 2–8 cm (often ± winged);

blades (3-nerved from near bases) lanceolate to ovate, 10–23 × 7–15 cm, bases broadly to narrowly cuneate, margins entire or serrate (flat), abaxial faces puberulent or hirsutulous to tomentulose and gland-dotted (abaxial) or ± scabrous (adaxial).

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.

1–15 cm.

4–15(–40) cm.

hemispheric, (10–25 ×) 8–12 mm.

± hemispheric, 10–24 mm diam.

10–20;

laminae 25–40 mm.

10–30;

laminae 15–20 mm.

60+;

corollas 6–7 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).

(often dark green, drying nearly black) 22–35 (bases appressed, apices ± spreading, sometimes reflexed in fruit), lanceolate, 8.5–15 × 2–4 mm (subequal), (margins ciliate) apices acuminate, abaxial faces hispidulous or puberulent, 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.

3–15.

1–5.

5–7 mm, glabrous or distally hairy;

pappi of 2 aristate scales 1.9–3 mm plus 0–1 deltate scales 0.5–0.8 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.

8–9 mm, 3-toothed (apices hairy).

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

= 102.

= 34.