Flora of North America species comparison

1–10, ascending to erect, uniformly finely strigillose-villous distal to mid.

usually single, erect, essentially glabrous basally to hispidulo-puberulent in arrays.

basal cauline nearly always withering well before flowering, linear-oblanceolate, smaller than proximal mid cauline, serrate;

proximal persisting, sometimes brown-black after senescence, often twisted;

proximal to distal numerous (100+ on tall stems), crowded, sessile, blades (bright green) linear to linear-lanceolate, 20–70 × 2–7(–10) mm, margins remotely serrulate (proximal) to entire or with 1–2 minute serrations (distal), obscurely 3-nerved, one or both faces glabrous or finely strigillose.

basal and proximal cauline tapering to long, winged petioles (quickly reduced distally on stems), blades broadly oblanceolate to obovate, 40–150 × 15–50 mm, margins serrate, finely ciliate, apices acute to obtuse, faces glabrous;

mid and distal cauline sessile, blades linear-elliptic, 5–50 × 2–10 mm, margins entire, finely ciliate.

1–4 mm, finely strigilloso-villous;

bracteoles 0–2, linear, grading into phyllaries.

1–3 mm.

narrowly campanulate, 2.5–3.5 mm.

narrowly campanulate, 3.5–6.5 mm.

2–8;

laminae 1–2 × 0.25–0.5 mm.

5–9;

laminae 2.5–3.5 × 0.7–1 mm.

2–4(–6);

corollas 2.3–3.5 mm, lobes 0.4–1 mm.

commonly 6–10;

corollas 4 mm, lobes ca. 1 mm.

in 3–4 series, strongly unequal;

outer ovate, acute, inner oblong, obtuse to rounded.

in 3–5 series, appressed, strongly unequal, outer ovate, inner broadly oblong, obtuse to rounded, glabrous.

100–300+, in short to elongate, pyramidal paniculiform arrays, branches recurved, secund.

15–350 (1–10 per branch), clustered on short divergent lateral branches in elongate and usually narrowly paniculiform arrays, often interrupted proximally, not secund, sometimes with ascending, straight or arching, elongate branches (like main axis).

(narrowly obconic) 1 mm, strigillose;

pappi 2–3 mm.

(tan) ca. 2.5 mm, glabrous;

pappi 3 mm.

= 18.

= 18.