Flora of North America species comparison

branched, puberulent, gland-dotted.

intricately branched, hirtellous, sparsely gland-dotted.

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.

alternate;

petioles 1–2 mm;

blades (venation obscure) oblong to spatulate, 3–12 × 1–4 mm, bases acute to acuminate, margins entire, apices acute to obtuse, faces tomentose, gland-dotted.

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

10–30 mm, villous, gland-dotted.

cylindric to campanulate, 7–10 mm.

cylindric, 9–11 mm.

13–20;

corollas yellowish, 5.3–6.5 mm.

20–30;

corollas purplish, 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).

20–25 in 5–6 series, greenish, often purple-tinged, 4–5-striate, unequal, (sparsely villous, gland-dotted) margins narrowly scarious (apices rounded, mucronate);

outer ovate to lanceolate (ciliate), inner linear-oblong.

in paniculiform arrays.

in paniculiform arrays.

2–2.5 mm, sericeous;

pappi of 26–32 white, barbellate bristles.

3.5–4.8 mm, hispidulous;

pappi of 26–30 white, barbellulate bristles.

= 18.