Flora of North America species comparison

branched from bases, pubescent.

branched, stipitate-glandular.

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.

alternate;

petioles 4–10 mm;

blades 3-nerved from bases, rhombic-ovate to lanceolate, 20–50 × 10–40 mm, bases rounded to cuneate, margins entire or irregularly dentate, apices acute, faces glabrous or sparsely gland-dotted.

2–15 mm, hispid to hirsute.

(leafy) 5–50 mm, stipitate-glandular.

cylindric to narrowly campanulate, 8–12 mm.

cylindric to campanulate, 8–9 mm.

10–16;

corollas purplish, 7–9 mm.

18–24;

corollas pale yellow-green or greenish white, 5–6 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).

22–26 in 5–6 series, greenish, often purple-tinged, 3–4-striate, subequal or unequal, margins narrowly scarious;

outer lanceolate to lance-ovate (often herbaceous, glandular-hirtellous, equaling or surpassing inner, apices acute to long-attenuate), inner lanceolate to lance-linear (glabrous, apices obtuse to acute).

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

borne singly (terminating lateral branches).

3–4 mm, densely pubescent to velutinous;

pappi of 40–52 white, barbellate bristles.

2.5–3 mm, strigose;

pappi of 30–35 white, smooth or barbellulate bristles.

= 18.

= 18.