Flora of North America species comparison

branched, puberulent, gland-dotted.

branched, puberulent.

alternate;

petioles 10–50 mm;

blades 3-nerved from bases, deltate or rhombic-ovate, 50–100 × 20–50 mm, bases acute to truncate, margins crenate or coarsely dentate, apices long-acuminate, abaxial faces sparsely villous, gland-dotted, adaxial faces glabrous or sparsely pubescent, often gland-dotted.

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.

4–6 mm, puberulent, sparsely gland-dotted.

4–30 mm, pubescent.

cylindric to campanulate, 7–10 mm.

cylindric or obconic, 7–12 mm.

13–20;

corollas yellowish, 5.3–6.5 mm.

mostly 20–40(–70);

corollas pale yellow-green, 6.5–7.5 mm.

22–26 in 4–7 series, 3–5-striate, unequal, margins scarious (apices obtuse to acute);

outer ovate to lanceolate (often purple-tinged, glabrous or puberulent), inner linear to oblong (greenish, glabrous).

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).

in paniculiform arrays.

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

2–2.5 mm, sericeous;

pappi of 26–32 white, barbellate bristles.

4–5 mm, hispidulous to hirtellous;

pappi of 20–30 white, barbellate bristles.

= 18.

= 18.