Flora of North America species comparison

much branched, pubescent, gland-dotted.

much branched, pubescent, gland-dotted.

alternate;

petioles 2–5 mm;

blades 3-nerved from bases, oblong to broadly ovate, 6–15 × 5–9 mm, bases narrowly cuneate, margins irregularly dentate, apices acute to obtuse, faces sparsely pubescent, gland-dotted.

alternate;

petioles 0–3 mm;

blades 3-nerved from bases, ovate to suborbiculate, 3–20 × 1–15 mm, bases acute to obtuse or rounded, margins entire, coarsely dentate or serrate, apices rounded to acute, faces glandular-villous or hispidulous.

0.5–2.5 mm, glandular-viscid.

(bracteate) 2–10 mm, viscid to glandular-villous.

cylindric, 6–8 mm.

cylindric to narrowly campanulate, 7–12 mm.

8–14;

corollas pale yellow-green, often purple-tinged, 4.8–5.7 mm.

8–28(–34);

corollas pale yellow, often purple-tinged, 5.5–7 mm.

15–25 in 4–6 series, stramineous, 3–5-striate, unequal, (gland-dotted) margins scarious (apices obtuse to acute);

outer ovate, inner lanceolate.

30–48 in 5–8 series, greenish, often purple-tinged, 3–5-striate, (recurved or spreading) unequal, margins scarious (apices acute to acuminate);

outer obovate to suborbiculate (glandular-pubescent; mid sometimes 3-toothed with middle tooth elongated), inner linear-oblong (glabrous or sparsely gland-dotted).

in (leafy) paniculiform or racemiform arrays.

in loose, paniculiform arrays (often clustered at ends of branches).

2.5–3 mm, sparsely pubescent or strigose;

pappi of 24–28 tawny, barbellate bristles.

3.5–4.7 mm, glabrous or hirtellous;

pappi of 18–24 white, barbellulate bristles.

= 18.