Flora of North America species comparison

decumbent-ascending, white-pannose (tomentum usually sheath-like).

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

basal and cauline, basal present (in rosettes) at flowering, blades spatulate to oblanceolate-obovate, (1.5–)3–8(–12) cm × 6–15(–22) mm (gradually or little smaller distally, slightly succulent, margins often crenulate on drying), faces bicolor, abaxial closely white-pannose, adaxial glabrous or glabrate.

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.

cylindro-campanulate, 2.5–3 mm, bases glabrous.

campanulate, 2.5–3 mm, bases sparsely arachnose.

bisexual 2–3; all corollas usually purplish distally.

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

in 4–5 series, outer (purplish or rosy) elliptic-obovate to broadly ovate-elliptic, lengths 1/3–1/4 inner, apices rounded to obtuse, inner oblong, laminae brown-hyaline, apices rounded to obtuse or blunt, 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.

initially usually in dense, continuous spiciform arrays 2–20 cm × 10–14 mm (pressed), later branched, interrupted.

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).

(tan) 0.5–0.6 mm.

(tan) 0.3–0.5 mm.

annuals or biennials, 15–35(–50) cm; fibrous-rooted.

= 28, 40.