Flora of North America species comparison

erect, hirsute.

erect, scabro-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, 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).

1–5 cm.

3–12 cm.

hemispheric, 10–25 mm diam.

hemispheric, 15–23 mm diam.

10–15;

laminae 15–20 mm.

10–20;

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

40+;

corollas 5.5–6.5 mm, lobes yellow;

anthers dark brown or black, appendages dark or yellowish.

75+;

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

anthers dark, appendages dark (style branches yellow).

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.

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

1–7.

1–10.

4–4.5 mm, glabrate or distally puberulent;

pappi of 2 aristate scales 2.5–3.2 mm.

5–6 mm, glabrate;

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

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

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

= 68.

= 102 (subspecies unknown).