Flora of North America species comparison

branched, puberulent.

densely branched, glandular-puberulent.

opposite or alternate;

petioles 10–70 mm;

blades 3-nerved from bases, deltate-ovate, lance-ovate, or subcordate, 15–120 × 20–70 mm, bases acute, truncate, or subcordate, margins crenate, dentate, or serrate, apices attenuate, faces puberulent and 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.

4–30 mm, pubescent.

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

cylindric or obconic, 7–12 mm.

cylindric to broadly campanulate, 9–15 mm.

mostly 20–40(–70);

corollas pale yellow-green, 6.5–7.5 mm.

40–90;

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

30–40 in 5–7 series, greenish, 4–5-striate, unequal, margins scarious;

outer lance-ovate to lanceolate (pubescent, margins ciliate, apices long-acuminate), inner lanceolate to lance-linear (glabrous, apices acute to acuminate).

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).

(nodding in flower and fruit) in loose, corymbiform or paniculiform arrays.

in open, paniculiform arrays.

4–5 mm, hispidulous to hirtellous;

pappi of 20–30 white, barbellate bristles.

3–5.5 mm, scabrellous;

pappi of 18–25 smooth or barbellulate bristles.

= 18.