Flora of North America species comparison

branched from bases, pubescent.

branched, pubescent, gland-dotted.

opposite;

petioles 1–5 mm;

blades 3-nerved from bases, oblong, obovate, or ovate, (15–)30–80 × 10–35 mm, bases cordate or truncate, margins crenate-serrate, apices acute to obtuse, faces sparsely pubescent and gland-dotted.

mostly alternate, sometimes opposite;

petioles 0–5 mm;

blades 3-nerved from bases (venation raised, reticulate), elliptic to lanceolate or ovate to subdeltate, 20–70 × 7–20 mm, bases ± cuneate, margins crenate to serrate, apices acute, faces glandular-pubescent.

2–15 mm, hispid to hirsute.

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

cylindric to narrowly campanulate, 8–12 mm.

narrowly cylindric, 10–13 mm.

10–16;

corollas purplish, 7–9 mm.

9–24;

corollas pale yellow-green, 6–8.2 mm.

17–20 in 3–5 series, pale green, often purplish, 5–9-striate, unequal, margins narrowly scarious-ciliate (apices acute to acuminate);

outer lance-ovate (sparsely pubescent), inner narrowly lanceolate (glabrous).

18–20 in 3–4(–5) series, green or purplish, 5–9-striate, unequal, margins scarious (apices acute, attenuate, obtuse, or nearly rounded);

outer ovate (lengths evenly grading to inner, margins ciliate, faces pubescent, often gland-dotted), inner narrowly lanceolate to linear-oblong (faces glabrous).

erect, usually in loose, paniculiform arrays, sometimes borne singly.

in paniculiform arrays.

3–4 mm, densely pubescent to velutinous;

pappi of 40–52 white, barbellate bristles.

2.5–4 mm, densely pubescent;

pappi of 32–43 white, mostly barbellate, sometimes subplumose, bristles.

= 18.