Flora of North America species comparison

branched, puberulent, gland-dotted.

branched from bases, puberulent, 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 obscurely 3-nerved from bases, lanceolate to lance-ovate, 5–40 × 3.5–12 mm, bases acute to cuneate, margins usually coarsely dentate, sometimes entire, apices acute, faces gland-dotted.

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

1–2 mm, puberulent, gland-dotted.

cylindric to campanulate, 7–10 mm.

cylindric to campanulate, 7–11 mm.

13–20;

corollas yellowish, 5.3–6.5 mm.

13–20;

corollas pale green or yellow, 4.5–6.5 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).

18–22 in 5–6 series, greenish or stramineous, 3–5-striate, unequal, margins scarious (apices acute to obtuse, ciliate);

outer ovate (glandular-pubescent), inner lanceolate (gland-dotted).

in paniculiform arrays.

in (elongate) paniculiform arrays.

2–2.5 mm, sericeous;

pappi of 26–32 white, barbellate bristles.

3.5–4 mm, usually glabrous, rarely sparsely pubescent;

pappi of 30–35 tawny, usually barbellate, sometimes subplumose, bristles.

= 18.

= 18.