Flora of North America species comparison

branched from bases, pubescent.

branched, pubescent.

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.

opposite;

petioles 10–40 mm;

blades 3-nerved from bases, deltate-ovate to lance-ovate, 30–150 × 20–100 mm, bases subtruncate to cordate, margins coarsely to finely serrate, apices acuminate, abaxial faces minutely pubescent and gland-dotted, adaxial faces sparsely puberulent.

2–15 mm, hispid to hirsute.

10–25 mm, glandular-pubescent.

cylindric to narrowly campanulate, 8–12 mm.

broadly campanulate, 10–12 mm.

10–16;

corollas purplish, 7–9 mm.

35–45;

corollas pale yellow-green, often purple-tinged, 6–7.2 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).

28–35 in 4–5 series, greenish, often purple-tinged, 4–7-striate, unequal to subequal, margins scarious (ciliate);

outer narrowly lanceolate to lance-ovate (glandular-pubescent, apices long-acuminate), mid lanceolate (apices acute to acuminate), inner narrowly lanceolate (apices acute to obtuse, recurved, pubescent, often gland-dotted).

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

(erect in flower and fruit) in corymbiform or paniculiform arrays.

3–4 mm, densely pubescent to velutinous;

pappi of 40–52 white, barbellate bristles.

4.5–5.5 mm, hispidulous to glabrate;

pappi of 38–46 purple-tinged, barbellate bristles.

= 18.