Flora of North America species comparison

decumbent to erect, glabrous, hirsute, or puberulent.

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

mostly cauline; mostly alternate;

petioles 1–7 cm;

blades deltate-ovate, lance-ovate, or ovate, 2.5–14 × 1.8–13 cm, bases cordate to truncate or broadly cuneate, margins subentire to serrate, abaxial faces glabrate to hispid, not gland-dotted.

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).

9–50 cm.

1–14 cm.

hemispheric, 10–22 mm diam.

cylindric, 9–14 mm diam.

11–20;

laminae 12–23 mm.

8–14;

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

30+;

corollas 4.5–5 mm, lobes usually reddish, sometimes yellow;

anthers dark, appendages dark (style branches usually reddish, rarely yellow).

50+;

corollas 4.5–5.5 mm, lobes yellow;

anthers dark brown or black, appendages yellow.

20–30, lanceolate, 8–17 × 1–3 mm, apices acute to long-attenuate, abaxial faces glabrous or ± hispid, not 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.

1–3.

1–4(–12).

2.5–3.2 mm, glabrous or sparsely hairy;

pappi of 2 lanceolate or lance-linear scales 1.2–2.5 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.

7.5–8 mm, apices 3-toothed (middle teeth acuminate, usually glabrous or hispid, sometimes ± villous or bearded).

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

= 34 (subspecies unknown).