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.

mostly opposite, sometimes alternate or subopposite;

petioles 0–3 mm;

blades 3-nerved from bases, lanceolate to obovate, 20–60 × 12–30 mm, bases ± cuneate, margins crenate to serrate, apices obtuse to acute, abaxial faces tomentose, often densely gland-dotted as well (venation raised, reticulate), adaxial faces pubescent and gland-dotted.

5–40 mm, pubescent.

2–15 mm, densely tomentose, often gland-dotted.

narrowly campanulate, 7–11 mm.

cylindric to campanulate, 8–13 mm.

16–17;

corollas cream, 6–7 mm.

10–21;

corollas greenish, yellow, or yellow-orange, often purple-tinged, 5–7 mm.

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

outer ovate, inner lanceolate.

18–22 in 5–7 series, greenish, often purplish-tinged, 6–8-striate, unequal, margins scarious (apices acute to acuminate);

outer ovate (sparsely villous, gland-dotted, lengths no more than 1/2 inner, margins long-ciliate), inner narrowly lanceolate to linear-oblong (glabrous).

in dense, paniculiform arrays.

in ± dense, racemiform or paniculiform arrays.

2–3 mm, pubescent;

pappi of 18–24 white, barbellate bristles.

3.5–5 mm, sparsely to densely pubescent;

pappi of 30–35, white to tawny, barbellate bristles.

= 18.

= 18.