Flora of North America species comparison

basal;

petiole 0.5–2 cm;

blade oblanceolate to spatulate, 0.5–1.5(–2) × 0.2–0.6 cm, thinly pubescent.

basal;

petiole 0.5–3 cm;

blade elliptic to oblong, 0.5–2 × 0.2–0.6 cm, thinly pubescent adaxially, tomentose abaxially.

with involucres in small, open clusters 0.5–1.5 cm diam., greenish to grayish;

bracts 2, without whorl of sessile bracts about midstem, usually leaflike, oblanceolate to elliptic, 0.5–1.5 cm × 1.5–5 mm, gradually reduced and becoming scalelike at distal nodes, linear, aciculate, acerose, 0.3–0.8 cm × 1–2 mm, awns straight, 0.5–1.5 mm.

mostly flat-topped, openly branched, greenish to reddish;

bracts persistent, 2, usually leaflike at proximal nodes and similar to leaf blades, short-petiolate, oblong, 0.5–1.2 cm × 2–4 mm, sessile, reduced and scalelike at distal nodes, linear, acicular, often acerose, 0.1–0.5 cm × 0.5–1 mm, awns straight, 0.5–1 mm.

3–10+, grayish to reddish, urceolate, slightly ventricose basally, 2–2.5(–3) mm, slightly corrugate, without scarious or membranous margins, densely pubescent;

teeth spreading, unequal, 1–2 mm;

awns straight or uncinate, unequal, with longer anterior one straight, mostly 1.5–2.5 mm, others uncinate, 0.3–0.6 mm.

in dense terminal clusters with 1 at node of dichotomies, reddish, cylindric, not ventricose, 2–2.5 mm, corrugate, without scarious or membranous margins, thinly pubescent with stoutish, recurved hairs;

teeth spreading, unequal, 0.3–0.8(–1) mm, with 3 longer ones more erect than 3 shorter and less-prominent ones;

awns uncinate, 0.3–0.5 mm.

exserted;

perianth bicolored with floral tube yellow and tepals yellow or white, cylindric, 3.5–4 mm, sparsely pubescent;

tepals connate 1/2 their length, dimorphic, obovate, those of outer whorl white, obovate to nearly orbiculate, 3–4 times longer than those of inner whorl, , truncate to slightly 2-lobed apically, those of inner lobes erect, yellow, broadly obovate, truncate and erose apically;

stamens 9, included;

filaments distinct, 1–1.5 mm, glabrous;

anthers yellow to golden, oblong, 0.5–0.6 mm.

exserted;

perianth white or rose or red with white lobes, cylindric, 2.5–3 mm, glabrous except for few scattered hairs ca. midlength along midrib abaxially;

tepals connate 1/2 their length, monomorphic to slightly dimorphic, oblong, rounded apically, those of outer whorl usually slightly broader and longer than those of inner whorl;

stamens 6, included;

filaments distinct, 1.5–2 mm, glabrous;

anthers pink to red, oblong, 0.3–0.4 mm.

brown, globose-lenticular, 3–3.5 mm.

brown, lenticular, 2.5–3 mm.

= (36), 40, (44).