Flora of North America species comparison

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

(green) erect, hispid to hispidulous.

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; usually opposite or alternate, rarely whorled;

petioles 0–1 cm;

blades (1- or 3-nerved) lanceolate to elliptic or lance-ovate, 4–15 × 0.5–6 cm, bases rounded to cuneate, margins entire or serrulate (often undulate, often ± revolute), faces ± scabrous to tomentulose and gland-dotted (abaxial) or scabrous (adaxial).

1–15 cm.

2–15 cm.

hemispheric, (10–25 ×) 8–12 mm.

± hemispheric, 12–19 × 7–9 mm.

10–20;

laminae 25–40 mm.

10–20;

laminae 20–25 mm (abaxial faces gland-dotted).

60+;

corollas 6–7 mm, lobes yellow;

anthers dark brown or black, appendages dark or yellowish.

90+;

corollas 4–5 mm, lobes usually reddish, sometimes yellow;

anthers dark brown or black, appendages dark (style branches yellow).

(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.

33–38, lanceolate, 5–9 × 1.5–3 mm, apices (at least outer) obtuse, abaxial faces hispidulous to hispid, gland-dotted.

3–15.

1–6.

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 mm, glabrous;

pappi of 2 aristate scales 1.5–2.2 mm.

8–9 mm, 3-toothed (apices hairy).

4.5–6 mm, entire or weakly 3-toothed (apices purplish, glabrate to puberulent, often gland-dotted).

= 102.

= 34.