Flora of North America species comparison

(ascending) branched, pubescent, sometimes glandular-pubescent.

branched, coarsely scabrous.

alternate;

petioles 4–10 mm;

blades 3-nerved from bases, rhombic-ovate, 10–40 × 10–20 mm, bases cuneate, margins laciniate-dentate, apices acute to obtuse, faces glabrate or gland-dotted.

alternate to subopposite;

petioles 1–5 mm;

blades 3-nerved from bases, lanceolate to lance-ovate, 20–40 × 7–20 mm, bases rounded to broadly cuneate, margins entire or serrate, apices acute to acuminate, faces sparsely pubescent, stipitate-glandular.

5–40 mm, pubescent.

5–45 mm, pubescent, stipitate-glandular.

narrowly campanulate, 7–11 mm.

cylindric to campanulate, 7–11 mm.

16–17;

corollas cream, 6–7 mm.

11–22;

corollas pale yellow or cream, 4.7–6 mm.

35–40 in 5–7 series, 3–5-striate, unequal, (glabrous, ± chartaceous) margins narrowly scarious (apices acute to acuminate);

outer ovate, inner lanceolate.

16–20 in 4–5 series, greenish, often purple-tinged, 4–8-striate, unequal, margins narrowly scarious, often ciliate (apices acute to long-attenuate);

outer lance-ovate (pubescent), inner narrowly lanceolate (glabrous).

in dense, paniculiform arrays.

in open, racemose or paniculiform arrays.

2–3 mm, pubescent;

pappi of 18–24 white, barbellate bristles.

4–5 mm, silvery-setulose.

of 25–34 white, plumose bristles.

= 18.