Flora of North America species comparison

branched, puberulent.

branched, pubescent.

opposite or alternate;

petioles 10–70 mm;

blades 3-nerved from bases, deltate-ovate, lance-ovate, or subcordate, 15–120 × 20–70 mm, bases acute, truncate, or subcordate, margins crenate, dentate, or serrate, apices attenuate, faces puberulent 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.

4–30 mm, pubescent.

10–25 mm, glandular-pubescent.

cylindric or obconic, 7–12 mm.

broadly campanulate, 10–12 mm.

mostly 20–40(–70);

corollas pale yellow-green, 6.5–7.5 mm.

35–45;

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

30–40 in 5–7 series, greenish, 4–5-striate, unequal, margins scarious;

outer lance-ovate to lanceolate (pubescent, margins ciliate, apices long-acuminate), inner lanceolate to lance-linear (glabrous, apices acute to acuminate).

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).

(nodding in flower and fruit) in loose, corymbiform or paniculiform arrays.

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

4–5 mm, hispidulous to hirtellous;

pappi of 20–30 white, barbellate bristles.

4.5–5.5 mm, hispidulous to glabrate;

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

= 18.