Flora of North America species comparison

branched, puberulent, gland-dotted.

branched, stipitate-glandular.

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 4–10 mm;

blades 3-nerved from bases, rhombic-ovate to lanceolate, 20–50 × 10–40 mm, bases rounded to cuneate, margins entire or irregularly dentate, apices acute, faces glabrous or sparsely gland-dotted.

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

(leafy) 5–50 mm, stipitate-glandular.

cylindric to campanulate, 7–10 mm.

cylindric to campanulate, 8–9 mm.

13–20;

corollas yellowish, 5.3–6.5 mm.

18–24;

corollas pale yellow-green or greenish white, 5–6 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).

22–26 in 5–6 series, greenish, often purple-tinged, 3–4-striate, subequal or unequal, margins narrowly scarious;

outer lanceolate to lance-ovate (often herbaceous, glandular-hirtellous, equaling or surpassing inner, apices acute to long-attenuate), inner lanceolate to lance-linear (glabrous, apices obtuse to acute).

in paniculiform arrays.

borne singly (terminating lateral branches).

2–2.5 mm, sericeous;

pappi of 26–32 white, barbellate bristles.

2.5–3 mm, strigose;

pappi of 30–35 white, smooth or barbellulate bristles.

= 18.

= 18.