Flora of North America species comparison

relatively numerous, erect, green to brown or reddish brown, somewhat woody, glabrous.

silvery, canescent (bark gray-brown).

proximal blades bright green and glabrous or gray-green and sparsely hairy, 5–8 cm;

cauline blades bright green (gray-green in desert forms), linear, lanceolate, or oblong, 1–7 × 0.1–0.5(–0.9) cm, mostly entire, sometimes irregularly lobed, acute, usually glabrous, sometimes glabrescent (deserts).

persistent, light gray-green;

blades narrowly cuneate, 0.5–3 × 0.2–0.5 cm, entire or 3(–5)-lobed (lobes 1.5–2 mm, less than 1/3 blade lengths, acute), faces silvery canescent.

globose, 2–3 × 2–3.5(–6) mm.

globose, 2–3 × 1.5–2.5 mm.

pistillate 6–25; functionally staminate 8–20;

corollas pale yellow, 1.8–2 mm, eglandular or sparsely glandular.

pistillate 0–2 (raylike, laminae to 1 mm);

bisexual 1–3;

corollas 1–1.5 mm (style branches of ray florets elongate, exsert, epapillate, tips acute; of disc florets, short, truncate, papillate).

(light brown, broadly lanceolate, membranous): margins broadly hyaline, glabrous.

(8–15) ovate, canescent or tomentose.

in terminal or lateral, leafy, paniculiform arrays 15–45 × 6–30 cm; appearing ball-like on slender, sometimes nodding peduncles.

(usually nodding) in arrays 6–25 × 1–4 cm (branches erect, somewhat curved).

oblong, 0.5–0.8 mm, faintly nerved, glabrous.

(ellipsoid, 5-ribbed) 0.8–1 mm, glabrous.

= 18.

= 18, 36, 72.