Flora of North America species comparison

branched, puberulent.

branched, stipitate-glandular.

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.

alternate;

petioles 20–35 mm;

blades 3-nerved from bases, deltate-ovate or rhombic-ovate, 20–140 × 10–100 mm, bases truncate to cordate, margins irregularly dentate, apices acute, faces gland-dotted or glandular-pubescent.

4–30 mm, pubescent.

3–18 mm, stipitate-glandular.

cylindric or obconic, 7–12 mm.

cylindric to campanulate, 7.5–8.5 mm.

mostly 20–40(–70);

corollas pale yellow-green, 6.5–7.5 mm.

15–24;

corollas pale yellow-green or greenish white, 5–6.5 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).

22–26 in 5–6 series, greenish, often purple-tinged, 3–4-striate, unequal, margins narrowly scarious (apices obtuse to acute);

outer ovate to lanceolate (glandular-hirtellous, shorter than inner), inner linear-lanceolate (glabrous).

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

in paniculiform arrays.

4–5 mm, hispidulous to hirtellous;

pappi of 20–30 white, barbellate bristles.

2–3 mm, strigose;

pappi of 30–35 white, barbellulate bristles.

= 18.

= 18.