Flora of North America species comparison

erect, scabro-hispid.

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).

3–12 cm.

hemispheric, 15–23 mm diam.

10–20;

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

75+;

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

anthers dark, appendages dark (style branches yellow).

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

1–10.

5–6 mm, glabrate;

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

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

= 102 (subspecies unknown).