Flora of North America species comparison

basal;

petiole (0.5–)1–3(–4) cm;

blade oblanceolate, (0.5–)1–5(–7) × (0.3–)0.4–0.7(–1) cm, villous.

basal;

petiole 0.5–2(–3) cm;

blade oblanceolate, (0.5–)1–3(–4) × 0.1–0.7(–1.2) cm, thinly pubescent.

rather dense with secondary branches suppressed, grayish;

bracts 2, similar to leaf blades at proximal nodes only reduced, short-petiolate, becoming linear and aciculate at distal nodes, acerose, 0.5–7 cm × 2–7 mm, awns 0.5–1.2 mm.

with involucres in small, open clusters 0.3–1 cm diam., greenish yellow to green or reddish green;

bracts 2, sessile, leaflike and similar to proximal leaf blades only reduced, linear-oblanceolate to elliptic, 0.3–1(–1.5) cm × 1.5–5(–8) mm, rapidly reduced and scalelike at distal nodes, linear, acicular, often acerose, 0.1–0.5 cm × (0.3–)0.5–3 mm, awns straight, 0.2–1 mm.

1, grayish, cylindric, often ventricose basally, 2–2.5(–3) mm, with distinct, white to pink or purple, scarious margins extending nearly full length of awn, corrugate, villous abaxially;

teeth spreading, equal, 0.5–1.5 mm;

awns uncinate with longer ones 2–3 mm and alternating with shorter (1–1.5 mm) ones.

3–10, rarely more, greenish yellow to reddish green, cylindric or narrowly to broadly campanulate, not ventricose,1.5–3 mm, faintly corrugate, without scarious or membranous margins, thinly pubescent with spreading hairs, longest hairs on ribs and at base;

teeth spreading, equal, 1–2.5 mm, or divergent, thickened basally, unequal, 1–2 mm or 2.5–5 mm with hyaline margins between teeth;

awns uncinate, 0.2–0.5 mm.

exserted;

perianth bicolored with floral tube white and tepals white to rose, cylindric, 2–3.5 mm, pubescent abaxially;

tepals connate less than 1/4 their length, monomorphic, obovate to oblong, acute to truncate and erose apically;

stamens 9, slightly exserted;

filaments distinct, 2–3 mm, glabrous;

anthers cream to rose, ovate, 0.3–0.4 mm.

exserted;

perianth yellow or sometimes white, cylindric, (1.7–)2–3 mm, pubescent;

tepals connate ca. 2/3 their length, essentially monomorphic, narrowly oblong to narrowly obovate, occasionally with outer lobes slightly broader and longer than inner ones, entire apically;

stamens 9, exserted;

filaments connate basally into 0.2–1 mm tube, (0.3–)0.5–2.5 mm, pilose-ciliate;

anthers cream to pale yellow, oblong, (0.2–)0.5–0.7 mm.

dark brown, globose-lenticular, 2–2.5 mm.

brown, lenticular, 1.5–2.5 mm.

= (38), 40, (42, 44, 46).