Flora of North America species comparison

erect, usually hispid.

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

mostly cauline; mostly alternate;

petioles 2–20 cm;

blades lance-ovate to ovate, 10–40 × 5–40 cm, bases cuneate to subcordate or cordate, margins serrate, abaxial faces usually ± hispid, sometimes 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.

2–20 cm.

1–18 cm.

hemispheric or broader, 15–40(–200+) mm diam.

hemispheric, 10–20 mm diam.

(13–)17–30(–100+);

laminae 25–50 mm.

10–21;

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

150+(–1000+);

corollas 5–8 mm (throats ± bulbous at bases), lobes usually reddish, sometimes yellow;

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

60+;

corollas 5–7 mm, lobes yellow;

anthers dark brown to black, appendages yellow.

20–30(–100+), ovate to lance-ovate, 13–25 × (3–)5–8 mm, (margins usually ciliate) apices abruptly narrowed, long-acuminate, abaxial faces usually hirsute to hispid, rarely glabrate or glabrous, usually 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.

1–9.

1–6.

(3–)4–5(–15) mm, glabrate;

pappi of 2 lanceolate scales 2–3.5 mm plus 0–4 obtuse scales 0.5–1 mm.

3–5 mm, glabrate;

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

9–11 mm, 3-toothed (middle teeth long-acuminate, glabrous or hispid).

8–12 mm, 3-toothed.

= 34.

= 34 (subspecies unknown).