Flora of North America species comparison

basal;

petiole 0.5–2 mm;

blade oblanceolate, 0.5–1.5(–2) × 0.3–0.6(–0.8) cm, thinly pubescent.

basal;

petiole 0.5–2(–3.5) cm;

blade oblanceolate to narrowly oblong, 0.5–2.5(–4) × 0.2–0.6(–1.2) cm, thinly pubescent.

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

bracts 2, sessile, 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, 0.4–1 cm × 1–2(–3) mm, awns straight, 1–3 mm.

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

bracts 2, sessile, usually leaflike, oblanceolate to elliptic, 0.5–1.5 cm × 1.5–7 mm, gradually reduced and becoming scalelike at distal nodes, linear, aciculate, acerose, 0.1–0.5 cm × 1–2 mm, awns straight, 0.4–1 mm.

3–10, grayish to reddish, urceolate, slightly ventricose basally, 3–3.5 mm, slightly corrugate, without scarious or membranous margins, densely pubescent;

teeth widely spreading to divergent, unequal, 0.3–0.6 mm or 3–6 mm;

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

3–5, greenish or grayish to reddish, urceolate, slightly ventricose basally, 1.5–2 mm, corrugate, without scarious or membranous margins, pubescent;

teeth widely spreading to divergent or recurved, equal, 0.5–1.5 mm or 1–3 mm;

awns uncinate or straight, unequal, alternating 0.5–1.5 mm and 0.2–0.5 mm.

included or only slightly exserted;

perianth bicolored with floral tube greenish white and tepals white, cylindric, 2.5–3 mm, sparsely pubescent;

tepals connate 2/3 their length, dimorphic, linear-oblong, those of outer whorl spreading, 1.5 times longer than those of inner whorl, rounded, entire or emarginate to slightly 2-lobed apically, those of inner whorl erect, acute, entire to erose, slightly fimbriate or 2-lobed apically;

stamens 3, included;

filaments distinct, 2–2.5 mm, glabrous;

anthers white, ovate, 0.3–0.4 mm.

slightly exserted;

perianth bicolored with floral tube greenish white and tepals white, cylindric, 2.5–3 mm, sparsely pubescent;

tepals connate 2/3 their length, slightly dimorphic, those of outer whorl oblong to oblong-ovate, 1.5 times longer than those of inner whorl, rounded, erose or rarely some entire to denticulate apically, those of inner whorl linear-oblanceolate, acute, entire or denticulate apically;

stamens 9, included;

filaments distinct, 2–2.5 mm, glabrous;

anthers white, ovate, 0.2–0.3 mm.

brown, globose-lenticular, 2.5–3 mm.

brown, globose-lenticular, 2.5–3 mm.

= 42.