Flora of North America species comparison

decumbent to erect, glabrous, hirsute, or puberulent.

(usually yellow-brown or greenish, sometimes glaucous) erect, glabrous, hispid, ± hirsute, or scabrous.

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.

cauline; all or mostly opposite to mostly alternate;

petioles 0.5–1.5 cm;

blades light to dark green, 3-nerved (distal to bases) ± lanceolate to ± ovate, 4–20 × 0.8–4 cm, bases cuneate, margins entire or ± serrate (flat), abaxial faces hispid to hispidulous or tomentulose to villous-tomentose, gland-dotted.

9–50 cm.

1–18 cm.

hemispheric, 10–22 mm diam.

hemispheric, 10–20 mm diam.

11–20;

laminae 12–23 mm.

10–21;

laminae 20–25 mm (abaxial faces not gland-dotted).

30+;

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

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

60+;

corollas 5–7 mm, lobes yellow;

anthers dark brown to black, appendages yellow.

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

30–38 (loose, spreading), lanceolate to lance-ovate, 8–16 × 1.5–3 mm, (margins ciliate) apices acute to acuminate, abaxial faces usually ± strigose, rarely glabrate, not gland-dotted.

1–3.

1–6.

2.5–3.2 mm, glabrous or sparsely hairy;

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

3–5 mm, glabrate;

pappi of 2 aristate scales 2.2–4.5 mm plus 0–2 lanceolate scales 0.5–1 mm.

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

8–12 mm, 3-toothed.

= 34 (subspecies unknown).