Flora of North America species comparison

erect, usually hispid.

erect, distally densely 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;

petioles obscure (intergrading with blades);

blades obovate to orbiculate, 4.6–14.5 × 2.1–12 cm, bases broadly cuneate to rounded, margins entire or serrulate, abaxial faces strigoso-hispid, not gland-dotted (cauline usually much smaller, alternate distally).

2–20 cm.

10–20 cm.

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

shallowly hemispheric, (15–25 ×) 5–8 mm.

(13–)17–30(–100+);

laminae 25–50 mm.

0 or 2–8;

laminae (sometimes purplish) 1–2(–10) 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).

100–150+;

corollas 7–8 mm, lobes reddish;

anthers dark, 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.

(often dark purple) 25–33, lanceolate to ovate, 10–14 × 3–5 mm, apices acute to acuminate, abaxial faces hispid or glabrous.

1–9.

usually borne singly.

(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, glabrate;

pappi of 2 (often unequal) aristate scales 0.5–2.9 mm.

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

9–10 mm, subentire to 3-toothed (apices purplish, mucronate).

= 34.

= 34.