Flora of North America species comparison

erect, scabro-hispid.

erect, slightly hairy.

mostly basal; opposite, or opposite (proximal) and alternate;

petioles 0–1 cm;

blades lance-ovate to oblong-lanceolate, or rhombic-ovate to lance-linear, 5–27 × 2–6 cm, bases cuneate, margins serrate to subentire, abaxial faces sparsely hispid, sparsely, if at all, gland-dotted (cauline smaller).

basal and cauline; mostly opposite;

petioles 1–5 cm;

blades lanceolate to lance-ovate, 10–25 × 2–8 cm, bases cuneate, margins serrulate to serrate, abaxial faces sparsely hispid, gland-dotted.

3–12 cm.

7–14 cm.

hemispheric, 15–23 mm diam.

hemispheric, 14–18 mm diam.

10–20;

laminae 20–35 mm (abaxial faces usually gland-dotted).

15–20;

laminae 25–37 mm.

75+;

corollas 6.5–7 mm, lobes usually reddish, sometimes yellow;

anthers dark, appendages dark (style branches yellow).

75+;

corollas 7–7.5 mm, lobes reddish (at least at tips);

anthers dark, appendages dark to yellowish (style branches yellow).

25–35, ovate, 6–10 × 3–5 mm, (margins ciliate) apices acute, abaxial faces glabrate to hispid.

25–35, oblong-lanceolate, 7–12 × 3–3.5 mm (strongly unequal), apices acuminate, abaxial faces usually puberulent, gland-dotted.

1–10.

3–6.

5–6 mm, glabrate;

pappi of 2 aristate scales 4.5–5 mm plus 1–4 smaller aristate scales 0.3–2 mm.

(seldom formed) 4–5 mm, glabrate;

pappi of 2 aristate scales 2.5–3.5 mm.

9–10 mm, shallowly 3-toothed to subentire (apices ciliate, hairy).

9–10 mm, entire or 3-toothed (apices reddish).

= 102 (subspecies unknown).

= 102.