Flora of North America species comparison

branched from near bases, glandular-pubescent.

(ascending) branched, pubescent, sometimes glandular-pubescent.

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.

alternate;

petioles 4–10 mm;

blades 3-nerved from bases, rhombic-ovate, 10–40 × 10–20 mm, bases cuneate, margins laciniate-dentate, apices acute to obtuse, faces glabrate or gland-dotted.

1–5 mm, glandular-pubescent.

5–40 mm, pubescent.

cylindric to obconic, 7–12 mm.

narrowly campanulate, 7–11 mm.

8–12;

corollas pale yellow-green, 5.5–8 mm.

16–17;

corollas cream, 6–7 mm.

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).

35–40 in 5–7 series, 3–5-striate, unequal, (glabrous, ± chartaceous) margins narrowly scarious (apices acute to acuminate);

outer ovate, inner lanceolate.

borne in (leafy) paniculiform arrays.

in dense, paniculiform arrays.

2.5–3.5 mm, puberulent;

pappi of 24–30 white, barbellate bristles.

2–3 mm, pubescent;

pappi of 18–24 white, barbellate bristles.

= 18.

= 18.