Flora of North America species comparison

branched from near bases, glandular-pubescent.

branched, 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.

opposite;

petioles 0–1 mm;

blades 3-nerved from bases, deltate-ovate to lanceolate, 7–30 × 4–28 mm, bases mostly obtuse to subtruncate, sometimes acuminate, margins serrate, apices acute, faces puberulent, gland-dotted.

1–5 mm, glandular-pubescent.

10–30 mm, puberulent.

cylindric to obconic, 7–12 mm.

cylindric to campanulate, 8–12 mm.

8–12;

corollas pale yellow-green, 5.5–8 mm.

8–14;

corollas pale green or yellow, 5.5–6.5 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).

12–15 in 3–5 series, greenish, often purple-tinged, 5–7-striate, unequal, margins scarious (apices acute);

outer ovate to lance-ovate (puberulent, margins ciliate), inner narrowly lanceolate (glabrous).

borne in (leafy) paniculiform arrays.

borne singly or in corymbiform-paniculiform arrays.

2.5–3.5 mm, puberulent;

pappi of 24–30 white, barbellate bristles.

4.5–5 mm, densely pubescent;

pappi of 24–30 white, usually barbellate, sometimes subplumose, bristles.

= 18.

= 18.