Flora of North America species comparison

erect to decumbent or procumbent, loosely arachnose-tomentose.

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

basal and cauline, proximal usually present at flowering, blades spatulate to oblanceolate-obovate, 2–7 cm × 4–16 mm (becoming spatulate to oblanceolate bracts among proximal heads, surpassing glomerules, bases narrowed to petiolar regions, margins sinuate, apices often apiculate), faces concolor or weakly bicolor, loosely 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.

cupulate-campanulate, 3–3.5 mm, bases sparsely arachnose.

campanulate, 3.5–4 mm, bases sparsely tomentose.

bisexual 3–4; all (or at least bisexual) corollas usually purplish distally.

bisexual 2–4; all corollas yellowish.

in 3–4 series, outer ovate-triangular, lengths 1/2–2/3 inner, apices attenuate-apiculate, inner oblong, laminae often purple-tinged (at stereome), apices (transparent, sometimes golden) acute to obtuse.

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 glomerules in continuous or interrupted, spiciform arrays 1–12 cm × 10–15 mm (pressed).

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

(tan) 0.4–0.5 mm.

not seen.

= 28.