Flora of North America species comparison

sometimes reddish at base.

(1–4), ascending to erect, simple, usually glabrous, sometimes sparsely pilose proximally, densely stipitate-glandular distally.

blades 10–100 mm, margins sometimes ciliate or (distal) stipitate-glandular, apices mucronulate;

basal sometimes marcescent, petiole bases widened, clasping, apices obtuse or acute;

cauline reduced distally, subclasping, apices acute.

basal and cauline; alternate;

basal ± petiolate, cauline sessile;

blades 1-nerved, linear- to oblong-spatulate (basal), or linear-lanceolate to linear, margins entire, revolute, faces glabrous or (distal) densely stipitate-glandular.

bracts 2–9, glandular.

campanulate, 4.5–8 × 8–14 mm.

flat to slightly convex, pitted, epaleate.

laminae 5–8 mm.

15–30(–45) in 1 series, pistillate, fertile;

corollas white to pale purple (coiling at maturity).

40–50, bisexual, fertile;

corollas yellow, slightly ampliate, tubes shorther than tubular throats, lobes 5, erect, triangular;

style-branch appendages lanceolate.

± green, margins erose-hyaline, inner more widely so, apices mucronulate.

22–44 in 3–4 series, 1-nerved (nerve translucent, flat), usually lance-oblong to lanceolate, sometimes ovate, subequal, membranous, margins scarious, (apices darker green, acute, mucronulate) abaxial faces densely short-stipitate-glandular.

(1–)3–10(–30+), each terminating long, ascending branch.

radiate, usually in paniculiform (sometimes appearing corymbiform) arrays, sometimes borne singly.

golden brown, ribs stramineous.

fusiform-obconic, terete, 7–10-nerved (nerves thin), faces glabrous to sparsely strigose;

pappi of 30–40, stramineous, subequal, barbellate, apically attenuate bristles in 1 series.

= 9.

= 18.