Flora of North America species comparison

erect, usually strigose or hispid to glabrate.

erect, usually glabrous, sometimes proximally hirsute (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).

cauline; opposite (proximal) or alternate;

sessile or subsessile;

blades (grayish green or bluish green) lanceolate, 8–15 × 1.5–3.5 cm, bases ± cuneate, margins serrate to subentire, abaxial faces glabrous or glabrate (smooth or slightly rough to touch, glaucous).

4–13 cm.

2–8 cm. cm.

hemispheric, 10–24 mm diam.

cylindric, 10–15 mm diam.

14–20;

laminae ca. 8–11 mm.

5–10;

laminae 15–20 mm.

40+;

corollas 4.8–5.8 mm, lobes reddish;

anthers purplish, appendages reddish (style branches yellow).

35+;

corollas 5.5–6.5 mm, lobes yellow;

anthers dark, appendages dark.

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.

23–28, lanceolate, 6–13 × 2–3 mm, (margins sometimes ciliate) apices acuminate, abaxial faces glabrous, not gland-dotted.

1–9.

1–6.

2.7–3.5 mm, glabrate;

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

4–5.5 mm, glabrous;

pappi of 2 aristate scales 3.2–4.1 mm plus 0–1 deltate scales 0.5–1.1 mm.

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

8.5–10 mm, 3-toothed to subentire.

= 34.

= 68.