Flora of North America species comparison

erect, usually hispid.

(green) erect, hispid to hispidulous.

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; usually opposite or alternate, rarely whorled;

petioles 0–1 cm;

blades (1- or 3-nerved) lanceolate to elliptic or lance-ovate, 4–15 × 0.5–6 cm, bases rounded to cuneate, margins entire or serrulate (often undulate, often ± revolute), faces ± scabrous to tomentulose and gland-dotted (abaxial) or scabrous (adaxial).

2–20 cm.

2–15 cm.

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

± hemispheric, 12–19 × 7–9 mm.

(13–)17–30(–100+);

laminae 25–50 mm.

10–20;

laminae 20–25 mm (abaxial faces 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).

90+;

corollas 4–5 mm, lobes usually reddish, sometimes yellow;

anthers dark brown or black, 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.

33–38, lanceolate, 5–9 × 1.5–3 mm, apices (at least outer) obtuse, abaxial faces hispidulous to hispid, 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.

2.5–3 mm, glabrous;

pappi of 2 aristate scales 1.5–2.2 mm.

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

4.5–6 mm, entire or weakly 3-toothed (apices purplish, glabrate to puberulent, often gland-dotted).

= 34.

= 34.