Flora of North America species comparison

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

(often reddish) erect, pilose to appressed-hairy proximally.

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 basal; opposite;

petioles 2.5–10 cm;

blades oblong-lanceolate or elliptic to ovate, 5–20 × 1.5–7 cm, bases cuneate, margins entire or serrulate, abaxial faces scabrous to hispidulous, gland-dotted (cauline usually smaller, rarely 2–4 pairs well developed).

1–15 cm.

1–14 cm.

hemispheric, (10–25 ×) 8–12 mm.

cylindric, 9–14 mm diam.

10–20;

laminae 25–40 mm.

8–14;

laminae 18–22 mm (abaxial faces densely gland-dotted).

60+;

corollas 6–7 mm, lobes yellow;

anthers dark brown or black, appendages dark or yellowish.

50+;

corollas 4.5–5.5 mm, lobes yellow;

anthers dark brown or black, appendages 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.

20–25, lanceolate, 4.5–7(–11) × 1.5–2.5 mm, (margins usually ciliate) apices acute to short-acuminate, abaxial faces glabrate to sparsely pilose (hairs moniliform), not gland-dotted.

3–15.

1–4(–12).

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, sparsely villous or glabrate;

pappi of 2 aristate scales 1.5–2.8 mm plus 0–4 deltate scales 0.4–1 mm.

8–9 mm, 3-toothed (apices hairy).

5–7 mm, subentire to 3-toothed (shortly mucronate).

= 102.

= 34 (subspecies unknown).