Flora of North America species comparison

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

1(–5), erect, simple, glabrous or moderately to densely hispido-villous, sometimes hairs appressed.

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 winged petioles, blades broadly oblanceolate to obovate or elliptic, 35–200 (including petioles) × 15–60 mm, margins serrate or crenate, apices acute, faces sparsely to densely hispido-villous, rarely glabrous;

mid and distal cauline sessile, blades elliptic, 15–30 × 5–7 mm, rapidly reduced distally, margins entire.

1–4 mm, finely strigilloso-villous;

bracteoles 0–2, linear, grading into phyllaries.

1.5–2.5 mm, hispido-villous to canescent.

narrowly campanulate, 2.5–3.5 mm.

campanulate, 4–6 mm.

2–8;

laminae 1–2 × 0.25–0.5 mm.

6–14;

laminae 1.5–4.5 × 0.5–1 mm.

2–4(–6);

corollas 2.3–3.5 mm, lobes 0.4–1 mm.

6–12;

corollas 3–4.5 mm, lobes 0.6–1.2 mm.

in 3–4 series, strongly unequal;

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

in 3–4 series, appressed, strongly unequal, midribs and tips conspicuously green, margins white, scarious, apices obtuse, glabrous or moderately strigose.

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

8–250+ in usually wand-paniculiform arrays of short axillary and terminal racemiform, non-secund clusters, sometimes proximal branches elongated, ascending and bearing short axillary and terminal racemiform clusters.

(narrowly obconic) 1 mm, strigillose;

pappi 2–3 mm.

(narrowly obconic) 1–2.5 mm, glabrous;

pappi 2.5–4 mm (sometimes distinctly clavate).

= 18.

= 18.