Flora of North America species comparison

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

branched, pubescent, 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.

opposite;

petioles 2–4 mm;

blades 3-nerved from bases (abaxial venation raised, reticulate), lanceolate to oblong, 35–60 × 10–20 mm, bases acute or rounded, margins serrate, apices acute, faces sparsely to densely pubescent, gland-dotted.

5–40 mm, pubescent.

(bracteate) 1–8 mm, densely tomentose.

narrowly campanulate, 7–11 mm.

cylindric to turbinate, 13–15 mm.

16–17;

corollas cream, 6–7 mm.

19–24;

corollas pale yellow, 8–9.5 mm.

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

outer ovate, inner lanceolate.

34–40 in 6–8 series, greenish to stramineous, 5–8-striate, unequal, margins scarious (ciliate, apices acute);

outer ovate to lance-ovate (often villous toward tips), inner lanceolate (glabrous).

in dense, paniculiform arrays.

borne singly (in axils) or in paniculiform arrays.

2–3 mm, pubescent;

pappi of 18–24 white, barbellate bristles.

3.5–4 mm, hirsute;

pappi of 26–42 white, barbellate bristles.

= 18.

= 18.