Flora of North America species comparison

branched, puberulent, gland-dotted.

branched, pubescent.

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 3–20 mm;

blades 3-nerved from bases, deltate to lanceolate, 10–60 × 7–50 mm, bases cordate to truncate, margins crenate-dentate, apices acute, faces sparsely to densely pubescent, gland-dotted.

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

20–50 mm, glandular-pubescent.

cylindric to campanulate, 7–10 mm.

cylindric to broadly campanulate, 12–14 mm.

13–20;

corollas yellowish, 5.3–6.5 mm.

± 60;

corollas pale yellow, often purple-tinged, 9–10 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).

40–60 in 5–6 series, greenish, 4–6-striate, unequal, margins narrowly scarious (apices acute to acuminate);

outer narrowly lanceolate (glandular-pubescent), inner lanceolate (glabrous or tomentulose).

in paniculiform arrays.

borne singly or in open, paniculiform arrays.

2–2.5 mm, sericeous;

pappi of 26–32 white, barbellate bristles.

4–5 mm, hispidulous or glabrate;

pappi of 32–36 white, barbellate bristles.

= 18.