Flora of North America species comparison

erect, usually hispid.

decumbent to ± erect, glabrous or glabrate (glaucous).

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; mostly opposite;

sessile;

blades (often bluish green, 1- or 3-nerved) linear to lanceolate, 3–7.5 × 0.5–2.2 cm, bases ± cuneate, margins entire or serrate (usually ciliate and undulate), faces glabrous or glabrate to hispid.

2–20 cm.

(1–)3–13 cm.

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

hemispheric, 12–25 mm diam.

(13–)17–30(–100+);

laminae 25–50 mm.

10–18;

laminae 8–9 mm.

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).

35+;

corollas 4–6 mm, lobes reddish;

anthers brownish red, appendages brownish red (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.

16–19, ovate to lance-ovate, 3–8 × 2–3.5 mm, (margins ciliate) apices obtuse to acute, abaxial faces glabrate to ± strigose, not gland-dotted.

1–9.

1–5.

(3–)4–5(–15) mm, glabrate;

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

3–3.5 mm, glabrous;

pappi of 2 aristate scales 1.2–1.5 mm.

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

7–7.5 mm, subentire to 3-toothed (apices obtuse to acute, hairy, gland-dotted).

= 34.

= 68, 102.