Flora of North America species comparison

usually 1, erect (unbranched proximal to heads).

basal and proximal cauline 20–30(–40) cm, proximal cauline blades hastate to deltate or lanceolate.

basal and cauline; alternate; petiolate (proximal) or sessile;

blades pinnately nerved, broadly deltate or hastate (proximal) to broadly lanceolate, margins doubly-serrate, faces glabrous.

campanulate to obconic, 11–14 mm.

cylindric or campanulate to obconic, 5–8+ mm diam. (glabrous).

slightly convex or flat, foveolate, epaleate.

18–55;

corollas ochroleucous or white (rarely pinkish), 8–9(–10.5) mm;

anthers 2–2.5 mm.

0.

10–55, bisexual, fertile;

corollas usually white or ochroleucous to greenish, rarely pinkish, tubes longer than cylindric throats, lobes 5, erect to spreading, lanceolate;

style branches stigmatic in 2 lines, apices truncate or truncate-penicillate (appendages essentially 0).

(10–)12–14(–17).

persistent, 7–14+ in 1–2 series, erect, distinct, oblong, ± equal, margins chartaceous to scarious.

of 4–9+ (subulate, rarely leaflike) bractlets.

discoid, in corymbiform (± flat-topped) arrays.

pale green to light brown, 5–7(–9) mm;

pappi 6–7 mm.

cylindric-fusiform, 8–12-ribbed, glabrous;

pappi persistent (fragile), of 100–150+, white, barbellulate bristles.

= 10.

= 20.