Flora of North America species comparison

branched, puberulent, gland-dotted.

densely branched, glandular-puberulent.

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 or alternate;

petioles 0–3 mm;

blades 3–4-nerved from bases (veins prominent), deltate, lanceolate, or ovate, 10–50 × 5–25 mm, bases acute to truncate or cordate, margins usually sharply dentate or dentate-serrate, rarely entire, apices acute to acuminate, faces glabrous or strigose and minutely glandular-puberulent.

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

10–70 mm, hispid to hispidulous and stipitate-glandular.

cylindric to campanulate, 7–10 mm.

cylindric to broadly campanulate, 9–15 mm.

13–20;

corollas yellowish, 5.3–6.5 mm.

40–90;

corollas pale yellow-green or cream, often purple-tinged, 6–8 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).

24–33 in 3–4 series, green, 3–16-striate, subequal or unequal, margins narrowly scarious (apices acute to acuminate);

outer (often bright green, 4–16-striate) lance-linear, linear-ovate, or broadly ovate, inner (pale green, 3–4-striate) linear or narrowly lanceolate (often chartaceous, scabrellous, often glandular).

in paniculiform arrays.

in open, paniculiform arrays.

2–2.5 mm, sericeous;

pappi of 26–32 white, barbellate bristles.

3–5.5 mm, scabrellous;

pappi of 18–25 smooth or barbellulate bristles.

= 18.