Flora of North America species comparison

pilosulous and stipitate-glandular.

erect, simple or branched from bases or ± throughout.

petioles 10–25(–35+) mm;

blades 25–35(–65+) × 20–35(–45+) mm.

cauline; mostly opposite (distal sometimes alternate);

petiolate;

blades usually 3-nerved from bases, deltate to ovate, margins dentate to serrate, faces usually hirsute and/or stipitate-glandular.

2–12(–25+) mm.

8–9+ mm.

± cylindric [campanulate or hemispheric], 4–5+ mm diam.

flat, epaleate.

10–30[–75];

corollas white to ochroleucous, throats ± cylindric (± contracted distally, lengths 4–6 times diams.), lobes 5, oblong-ovate;

styles: bases enlarged, hirsute, branches narrowly clavate (distally dilated).

3.5–4 mm.

persistent, 24–30+ in 3–5+ series, 3–5-nerved, ovate to lance-linear, unequal (herbaceous to chartaceous).

discoid, in paniculiform to corymbiform arrays.

4.5–5 mm;

pappi 3.5–5 mm.

prismatic, 4–5-ribbed, sparsely scabrellous (at least distally), not gland-dotted;

pappi persistent, of 20–40 smooth to barbellate bristles in 1 series.

= 10.

= 20.