Flora of North America species comparison

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

erect, glabrous (glaucous).

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 0–3 cm;

blades (light to dark green, 3-nerved distal to bases), lanceolate, 10–20 × 2.5–6 cm, bases ± cuneate, margins entire or subentire, abaxial faces hispid to hirsute, gland-dotted.

1–15 cm.

(1–)3–15 cm (gland-dotted).

hemispheric, (10–25 ×) 8–12 mm.

broadly hemispheric, 10–25 mm diam.

10–20;

laminae 25–40 mm.

12–21;

laminae 15–30 mm.

60+;

corollas 6–7 mm, lobes yellow;

anthers dark brown or black, appendages dark or yellowish.

50+;

corollas 6–8 mm, lobes yellow;

anthers reddish to dark, appendages reddish brown.

(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.

25–35 (loose), lanceolate, 8–15 × 3–5 mm (notably surpassing discs), (margins sometimes ciliate) apices acute to attenuate, abaxial faces hispidulous to glabrate, gland-dotted.

3–15.

3–10.

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.

4.5–5 mm, glabrate;

pappi of 2 aristate scales 3–4 mm.

8–9 mm, 3-toothed (apices hairy).

10–11 mm, 3-toothed (apices acute, hispidulous).

= 102.

= 102.