Flora of North America species comparison

erect, hirsute.

erect, distally densely hispid.

cauline; mostly opposite;

petioles 0.4–2 cm;

blades (3-nerved from bases) lanceolate to ovate, 6.5–18 × 1–8 cm, bases truncate to broadly rounded or cuneate, margins subentire to serrate (flat), abaxial faces ± hirsute, gland-dotted (adaxial not 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).

1–5 cm.

10–20 cm.

hemispheric, 10–25 mm diam.

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

10–15;

laminae 15–20 mm.

0 or 2–8;

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

40+;

corollas 5.5–6.5 mm, lobes yellow;

anthers dark brown or black, appendages dark or yellowish.

100–150+;

corollas 7–8 mm, lobes reddish;

anthers dark, appendages dark.

18–25 (usually loose, spreading, not reflexed), lanceolate, 7–12 × 2.5–3.5 mm, (margins ciliate) apices acute to short-acuminate, abaxial faces not gland-dotted.

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

1–7.

usually borne singly.

4–4.5 mm, glabrate or distally puberulent;

pappi of 2 aristate scales 2.5–3.2 mm.

3–4 mm, glabrate;

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

7–10 mm, 3-toothed (apices yellowish, hairy).

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

= 68.

= 34.