Flora of North America species comparison

erect, usually strigose or hispid to glabrate.

erect, glabrous (glaucous).

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).

mostly cauline; mostly alternate;

petioles 0–3 cm;

blades (light to dark green, 3-nerved distal to bases), lanceolate, 10–20 × 2.5–6 cm, bases ± cuneate, margins entire or subentire, abaxial faces hispid to hirsute, gland-dotted.

4–13 cm.

(1–)3–15 cm (gland-dotted).

hemispheric, 10–24 mm diam.

broadly hemispheric, 10–25 mm diam.

14–20;

laminae ca. 8–11 mm.

12–21;

laminae 15–30 mm.

40+;

corollas 4.8–5.8 mm, lobes reddish;

anthers purplish, appendages reddish (style branches yellow).

50+;

corollas 6–8 mm, lobes yellow;

anthers reddish to dark, appendages reddish brown.

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.

25–35 (loose), lanceolate, 8–15 × 3–5 mm (notably surpassing discs), (margins sometimes ciliate) apices acute to attenuate, abaxial faces hispidulous to glabrate, gland-dotted.

1–9.

3–10.

2.7–3.5 mm, glabrate;

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

4.5–5 mm, glabrate;

pappi of 2 aristate scales 3–4 mm.

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

10–11 mm, 3-toothed (apices acute, hispidulous).

= 34.

= 102.