Flora of North America species comparison

branched, puberulent, gland-dotted.

branched from bases, pubescent.

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.

opposite;

petioles 1–5 mm;

blades 3-nerved from bases, oblong, obovate, or ovate, (15–)30–80 × 10–35 mm, bases cordate or truncate, margins crenate-serrate, apices acute to obtuse, faces sparsely pubescent and gland-dotted.

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

2–15 mm, hispid to hirsute.

cylindric to campanulate, 7–10 mm.

cylindric to narrowly campanulate, 8–12 mm.

13–20;

corollas yellowish, 5.3–6.5 mm.

10–16;

corollas purplish, 7–9 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).

17–20 in 3–5 series, pale green, often purplish, 5–9-striate, unequal, margins narrowly scarious-ciliate (apices acute to acuminate);

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

in paniculiform arrays.

erect, usually in loose, paniculiform arrays, sometimes borne singly.

2–2.5 mm, sericeous;

pappi of 26–32 white, barbellate bristles.

3–4 mm, densely pubescent to velutinous;

pappi of 40–52 white, barbellate bristles.

= 18.

= 18.