Flora of North America species comparison

erect, usually hispid to ± hirsute.

(usually yellow-brown or greenish, sometimes glaucous) erect, glabrous, hispid, ± hirsute, or scabrous.

mostly basal; mostly opposite;

petioles 0–3 cm (broadly winged);

blades (3-nerved distal to bases) ovate or lanceolate to spatulate, 6–28 × 1.2–4.3 cm, bases cuneate, margins entire (often revolute), abaxial faces hispid to ± hirsute, not gland-dotted (cauline leaves relatively few, narrowly lanceolate to linear, much smaller).

cauline; all or mostly opposite to mostly alternate;

petioles 0.5–1.5 cm;

blades light to dark green, 3-nerved (distal to bases) ± lanceolate to ± ovate, 4–20 × 0.8–4 cm, bases cuneate, margins entire or ± serrate (flat), abaxial faces hispid to hispidulous or tomentulose to villous-tomentose, gland-dotted.

10–15 cm.

1–18 cm.

broadly hemispheric, 15–25 mm diam.

hemispheric, 10–20 mm diam.

12–18;

laminae 14–36 mm (abaxial faces not gland-dotted).

10–21;

laminae 20–25 mm (abaxial faces not gland-dotted).

100+;

corollas 5.5–6.5 mm, lobes reddish;

anthers purplish, apendages purplish (style branches usually reddish).

60+;

corollas 5–7 mm, lobes yellow;

anthers dark brown to black, appendages yellow.

24–30, lanceolate to lance-ovate, 8–13 × 2–5 mm, (margins sometimes ciliate) apices acute to short-acuminate or acuminate, abaxial faces sparsely hispid to glabrate.

30–38 (loose, spreading), lanceolate to lance-ovate, 8–16 × 1.5–3 mm, (margins ciliate) apices acute to acuminate, abaxial faces usually ± strigose, rarely glabrate, not gland-dotted.

1–3(–5).

1–6.

4–5 mm, glabrate;

pappi of 2 aristate scales 1.7–2.5 mm plus 1–3 deltate scales 0.5–1.5 mm.

3–5 mm, glabrate;

pappi of 2 aristate scales 2.2–4.5 mm plus 0–2 lanceolate scales 0.5–1 mm.

7–9 mm, 3-toothed (apices purplish).

8–12 mm, 3-toothed.

= 34.

= 34 (subspecies unknown).