Flora of North America species comparison

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

erect to ± procumbent, hispid, hispid-hirsute, or hirsute.

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 opposite;

petioles 5–9 cm;

blades deltate to ovate (sometimes constricted near middles, subsp. praecox), 3–9 × 2–7 cm, bases cordate, cuneate, or truncate, margins serrate to serrulate, abaxial faces hirsute to hispid, usually not gland-dotted.

1–15 cm.

15–40 cm.

hemispheric, (10–25 ×) 8–12 mm.

hemispheric, 13–18 mm diam.

10–20;

laminae 25–40 mm.

11–16;

laminae 16–26 mm.

60+;

corollas 6–7 mm, lobes yellow;

anthers dark brown or black, appendages dark or yellowish.

35+;

corollas 5–6 mm, lobes reddish;

anthers dark, appendages purplish red (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.

30–39, lanceolate, 9–15 × 2–4 mm, apices short-attenuate to short-acuminate (subsp. praecox), abaxial faces hispidulous to hispid-hirsute.

3–15.

1–3.

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.

2.5–3.3 mm, ± villous;

pappi of 2 aristate scales 1.2–1.5 mm.

8–9 mm, 3-toothed (apices hairy).

6.5–8 mm, 3-toothed (middle teeth acuminate, equaling or slightly surpassing discs, apices puberulent or bearded, hairs whitish).

= 102.