Flora of North America species comparison

branched, stipitate-glandular to glandular-pubescent.

mostly alternate (sometimes subopposite);

petioles 0;

blades obscurely 3-nerved from bases, elliptic, lance-linear, or oblong, 9–40 × 1–15 mm, bases acute to attenuate, margins entire, apices acute or obtuse, faces pubescent to villous, often stipitate-glandular.

2–50 mm, glandular-pubescent.

cylindric to campanulate, 10–20 mm.

25–50;

corollas pale yellow-green or cream, often purple-tinged, 5–10 mm.

25–35 in 4–6 series, greenish, 4–5-striate, unequal, margins scarious (sometimes ciliate, apices acute to acuminate);

outer ovate to lanceolate (gland-dotted to glandular-puberulent), inner linear-lanceolate to linear (glabrous).

borne singly or in corymbiform arrays.

3–7 mm, stipitate-glandular or hispidulous;

pappi of 18–25 white, barbellate to subplumose bristles.