Flora of North America species comparison

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

1 (at ends of rhizomes), ascending to erect, glabrate proximally to sparsely to densely strigoso-puberulent distally.

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.

basal and proximal cauline often persisting to flowering, gradually tapering to winged petioles, blades linear oblanceolate to oblanceolate, rarely spatulate, 50–120 × 8–30 mm, proximalmost much smaller, margins entire to sharply serrate, faces glabrate to moderately scabroso-strigose;

mid and distal cauline sessile or subsessille, blades elliptic to oblanceolate or obovate, 10–50 × 3–12 mm, mid tapering to bases, somewhat to strongly 3-nerved, largest, usually much reduced distally, margins entire or sometimes distally serrate, apices acute, faces sparsely to densely strigoso-puberulent, sometimes softly so.

1.5–2.5 mm, hispido-villous to canescent.

1–6 mm, sparsely to densely strigillose;

bracteoles 0–5, sometimes clustered near to and grading into phyllaries, linear-lanceolate.

campanulate, 4–6 mm.

campanulate, 3.5–6 mm.

6–14;

laminae 1.5–4.5 × 0.5–1 mm.

6–12;

laminae 2.9–6.3 × 0.3–0.7(–1) mm.

6–12;

corollas 3–4.5 mm, lobes 0.6–1.2 mm.

5–17;

corollas 3.5–6 mm, lobes 0.8–1.7 mm.

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

in 3–5 series, lanceolate to oblong, strongly unequal, acute or sometimes obtuse, glabrous or sparsely strigillose.

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.

(2–)30–500, in narrow to broad, thyrsiform to secund-pyramidal paniculiform arrays, branches recurved, secund, congested to lax.

(narrowly obconic) 1–2.5 mm, glabrous;

pappi 2.5–4 mm (sometimes distinctly clavate).

0.7–2.7 mm, sparsely to densely strigillose;

pappi 2.5–4.7 mm.

= 18.