Flora of North America species comparison

erect, usually hispid.

erect, hispid or strigose.

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; opposite;

petioles 0.4–3 cm;

blades (ashy green, usually 3-nerved from bases) lanceolate to ovate, 4–15 × 1–5 cm, bases ± cuneate to truncate, margins entire or serrate, faces strigoso-hispid, gland-dotted.

2–20 cm.

0.5–5.5 cm.

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

cylindric, 7–14 mm diam.

(13–)17–30(–100+);

laminae 25–50 mm.

8–13;

laminae 15–20 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).

30+: corollas 5–6 mm, lobes yellow;

anthers dark brown to black, appendages dark.

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.

15–25 (loosely appressed), lanceolate to ovate, 3.5–7.5 × 2–3.5 mm, apices acute to acuminate, abaxial faces ± hispid or strigose (hairs whitish), 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.

3–4 mm, sparsely hairy;

pappi of 2 aristate scales 4–4.5 mm plus 0–4 deltate scales 0.5–1 mm.

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

7–8 mm, entire or ± 3-toothed (apices acute to acuminate, hispid).

= 34.

= 34.