Flora of North America species comparison

basal;

petiole 0.5–2 cm;

blade (0.3–)0.5–1.5(–2) × (3–)5–10(–12) mm, thinly pubescent adaxially, more densely so to tomentose abaxially.

basal;

petiole 0.3–1(–1.5) cm;

blade oblanceolate, (0.5–)1–3(–4) × (0.2–)0.4–1(–1.2) cm, thinly pubescent.

greenish to reddish, mostly flat-topped and open to dense;

bracts 3, whorled, short-petiolate, linear-lanceolate to lanceolate, acerose, 0.5–1.5 cm × 3–8(–10) mm, awns straight, 1–3.5 mm.

with involucres in open clusters 2–6 cm diam., greenish or reddish;

bracts 2–3 at proximal node, usually leaflike, often with whorl of sessile bracts about midstem, oblanceolate to elliptic, 0.5–1.5 cm × 1–4 mm, gradually becoming reduced, linear-lanceolate, 0.4–1.2(–1.5) cm × 1.5–5 mm, at distal nodes scalelike, linear and aciculate, acerose, awns straight, 1–3 mm.

usually congested in small terminal clusters of 1–3 at node of dichotomies, (4–)5-ribbed, weakly 3-angled, 2–2.5 mm, not corrugate, densely canescent;

teeth (4–)5, essentially erect with longer, prominent, and thickened anterior one 2–4 mm, with straight awn 1–2.5 mm, remaining teeth smaller, 0.5–1 mm, with straight awns 0.3–0.8 mm.

3–10+, greenish or reddish, urceolate, strongly ventricose basally, 4–4.5 mm, without scarious or membranous margins, corrugate, thinly pubescent;

teeth spreading, unequal, 1–3 mm;

awns straight or uncinate with longer anterior one straight, mostly 2 mm, others uncinate, 0.5–1 mm.

1, exserted;

perianth, cylindric, 2.5–3.5 mm;

tepals connate 1/2–2/3 their length, dimorphic, entire, those of outer whorl spreading, broadly obovate and rounded apically, those of inner whorl erect, narrowly oblanceolate, 1/2 length of outer ones, acute apically;

stamens slightly exserted;

filaments 2.5–3 mm, glabrous;

anthers yellowish, oblong, 0.5–0.7 mm.

exserted;

perianth bicolored with floral tube white to greenish yellow and tepals red to maroon, cylindric, 4–4.5 mm, sparsely pubescent;

tepals connate 1/2 their length, dimorphic, oblong, those of outer whorl spreading and recurved, slightly longer than those of inner whorl, broadly obcordate, slightly erose or at least wavy and rounded apically, those of inner whorl erect, narrower, fimbriate and truncate or somewhat 2-lobed apically, erect;

stamens 9, exserted;

filaments distinct, 3.5–4 mm, glabrous;

anthers pink to red or maroon, oblong, 1–1.3 mm.

2.5–3 mm.

brown, globose-lenticular, 3–3.5 mm.

= (40), 44, (46).

= 40, 42, 44.