Flora of North America species comparison

basal;

petiole 1–2 cm;

blade narrowly oblanceolate, 0.5–1.5 × 0.2–0.35(–0.5) 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 clusters 0.5–1 cm diam., greenish;

bracts 2, sessile, unequal, 1 laminar and oblanceolate, 0.3–1 cm × 1–3 mm, awnless, this opposite linear, acicular, greatly reduced, 0.1–0.2 cm × 0.3–0.6 mm bract terminated by short, straight awn 0.6–1 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.

1, greenish, campanulate, 3-ribbed, 0.8–2 mm, faintly corrugate, pubescent;

teeth 3, equal, 1.8–2 mm;

awns uncinate, 0.6–1 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.

1, included to slightly exserted;

perianth yellow, cylindric, 1.5–1.8 mm, densely pubescent abaxially;

tepals connate ca. 1/2 their length, monomorphic, narrowly oblanceolate, obtuse to truncate, entire apically, slightly spreading;

stamens 9, slightly exserted;

filaments distinct, 0.5–0.8 mm, glabrous;

anthers reddish, ovate, 0.2–0.3 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.

dark brown, lenticular, 2–2.2 mm.

brown, globose-lenticular, 2.5–3 mm.

= (76, 78), 80, (84).