Flora of North America species comparison

erect, usually strigose or hispid to glabrate.

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

cauline; opposite or alternate;

sessile;

blades (green or grayish, 1- or 3-nerved) lanceolate, 5–9 × 0.5–3.5 cm, bases ± cuneate, margins entire or irregularly toothed to lobed, faces strigose to strumose, gland-dotted (adaxial sometimes glaucous).

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.

4–13 cm.

1–18 cm.

hemispheric, 10–24 mm diam.

hemispheric, 10–20 mm diam.

14–20;

laminae ca. 8–11 mm.

10–21;

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

40+;

corollas 4.8–5.8 mm, lobes reddish;

anthers purplish, appendages reddish (style branches yellow).

60+;

corollas 5–7 mm, lobes yellow;

anthers dark brown to black, appendages yellow.

16–21, lanceolate, 6–7.5 × 1.8–2.5 mm (often subequal), (margins ciliate) apices acute, abaxial faces hispidulous or strigose to glabrate, gland-dotted.

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.

1–9.

1–6.

2.7–3.5 mm, glabrate;

pappi of 2(–3) aristate scales 1.4–2.5 mm.

3–5 mm, glabrate;

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

7–7.8 mm, entire or 3-toothed (apices obtuse to acute, hispid-ciliate to glabrate).

8–12 mm, 3-toothed.

= 34.

= 34 (subspecies unknown).