Flora of North America species comparison

erect, usually hispid.

erect, scabro-hispid.

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.

mostly basal; opposite, or opposite (proximal) and alternate;

petioles 0–1 cm;

blades lance-ovate to oblong-lanceolate, or rhombic-ovate to lance-linear, 5–27 × 2–6 cm, bases cuneate, margins serrate to subentire, abaxial faces sparsely hispid, sparsely, if at all, gland-dotted (cauline smaller).

2–20 cm.

3–12 cm.

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

hemispheric, 15–23 mm diam.

(13–)17–30(–100+);

laminae 25–50 mm.

10–20;

laminae 20–35 mm (abaxial faces usually 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).

75+;

corollas 6.5–7 mm, lobes usually reddish, sometimes yellow;

anthers dark, appendages dark (style branches 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.

25–35, ovate, 6–10 × 3–5 mm, (margins ciliate) apices acute, abaxial faces glabrate to hispid.

1–9.

1–10.

(3–)4–5(–15) mm, glabrate;

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

5–6 mm, glabrate;

pappi of 2 aristate scales 4.5–5 mm plus 1–4 smaller aristate scales 0.3–2 mm.

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

9–10 mm, shallowly 3-toothed to subentire (apices ciliate, hairy).

= 34.

= 102 (subspecies unknown).