Flora of North America species comparison

erect, densely and loosely gray-white tomentose-arachnose.

erect to decumbent-ascending, densely and loosely arachnose-tomentose.

basal and cauline, basal mostly withering before flowering, blades oblanceolate, 1–3 cm × 2–6 mm (usually folded along midveins, bases subclasping, not auriculate; nearly unreduced among proximal heads, none longer than glomerules), faces concolor, tomentose-arachnose.

mostly cauline, basal usually withering before flowering, blades mostly oblanceolate to oblong-oblanceolate (± uniform in size and shape), 1–2.5(–3) cm × 2–6 mm, faces concolor or weakly bicolor, both loosely tomentose or adaxial glabrescent and greener.

campanulate, 3.5–4 mm, bases sparsely tomentose.

campanulate, 2.5–3 mm, bases sparsely arachnose.

bisexual 2–4; all corollas yellowish.

bisexual (2–)3(–4); all corollas purplish distally.

in 4–5 series, outer narrowly ovate-triangular, lengths ca. 1/3 inner, apices acute to acute-acuminate, inner oblong, laminae tan to brownish (not purple), apices (brownish) rounded-apiculate.

in 3–4(–5) series, outer ovate-triangular, lengths 1/2–2/3 inner, apices broadly acute, inner oblong, laminae usually purple (immediately beyond stereome and along proximal margins), apices (whitish) rounded-obtuse.

in continuous cylindric arrays 2–3(–4) cm × 10–12 mm (pressed).

in capitate clusters (in smallest plants) ca. 1 cm or interrupted, spiciform arrays 1–3(–12) cm × 8–12 mm (pressed, sometimes branching at proximal nodes, glomerules subtended by divergent-ascending bracts similar to distal cauline leaves).

not seen.

(tan) 0.3–0.5 mm.