Flora of North America species comparison

branched, puberulent.

branched from near bases, glandular-pubescent.

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 5–60+ mm;

blades 3-nerved from bases, ovate to deltate, 10–100 × 10–90 mm, bases cordate to truncate, margins crenate to serrate, apices acute to rounded, faces puberulent to glabrate, often gland-dotted.

4–30 mm, pubescent.

1–5 mm, glandular-pubescent.

cylindric or obconic, 7–12 mm.

cylindric to obconic, 7–12 mm.

mostly 20–40(–70);

corollas pale yellow-green, 6.5–7.5 mm.

8–12;

corollas pale yellow-green, 5.5–8 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).

21–35 in 5–6 series, greenish, often purple-tinged, 3–4-striate, unequal, margins scarious;

outer ovate to lance-ovate (glabrous or sparsely glandular-pubescent, apices acute to acuminate), inner lanceolate (glabrous, apices obtuse to acuminate).

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

borne in (leafy) paniculiform arrays.

4–5 mm, hispidulous to hirtellous;

pappi of 20–30 white, barbellate bristles.

2.5–3.5 mm, puberulent;

pappi of 24–30 white, barbellate bristles.

= 18.

= 18.