Flora of North America species comparison

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

erect, glabrous.

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).

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.

1–15 cm.

1–3(–8) cm.

hemispheric, (10–25 ×) 8–12 mm.

cylindric, 5–7 mm diam.

10–20;

laminae 25–40 mm.

5–8;

laminae 10–14 mm.

60+;

corollas 6–7 mm, lobes yellow;

anthers dark brown or black, appendages dark or yellowish.

15–22;

corollas 4–5.5 mm, lobes yellow;

anthers dark, appendages dark.

(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.

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

3–15.

(1–)3–15+.

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.

3.5–4.2 mm, glabrous;

pappi of 2 aristate scales 1.5–2.2 mm.

8–9 mm, 3-toothed (apices hairy).

5–7 mm, 3-toothed (apices hairy).

= 102.

= 34.