Flora of North America species comparison

branched, puberulent, gland-dotted.

branched, coarsely scabrous.

alternate;

petioles 10–50 mm;

blades 3-nerved from bases, deltate or rhombic-ovate, 50–100 × 20–50 mm, bases acute to truncate, margins crenate or coarsely dentate, apices long-acuminate, abaxial faces sparsely villous, gland-dotted, adaxial faces glabrous or sparsely pubescent, often 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.

4–6 mm, puberulent, sparsely gland-dotted.

5–45 mm, pubescent, stipitate-glandular.

cylindric to campanulate, 7–10 mm.

cylindric to campanulate, 7–11 mm.

13–20;

corollas yellowish, 5.3–6.5 mm.

11–22;

corollas pale yellow or cream, 4.7–6 mm.

22–26 in 4–7 series, 3–5-striate, unequal, margins scarious (apices obtuse to acute);

outer ovate to lanceolate (often purple-tinged, glabrous or puberulent), inner linear to oblong (greenish, glabrous).

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 paniculiform arrays.

in open, racemose or paniculiform arrays.

2–2.5 mm, sericeous;

pappi of 26–32 white, barbellate bristles.

4–5 mm, silvery-setulose.

of 25–34 white, plumose bristles.

= 18.