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.

essentially basal;

petiole 1–3(–4) cm;

blade oblong to oblong-ovate, 0.5–3(–8) × 0.3–1(–2.5) cm, thinly pubescent or glabrous adaxially, usually densely 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 and open to densely branched, green to gray or reddish;

bracts soon deciduous, 2, occasionally leaflike at proximal nodes and similar to proximal leaf blades only short-petiolate, more reduced and usually sessile, obovate, others linear and acicular, often acerose, (0.1–)0.2–0.5(–1) cm × 1–3(–6) mm, awns straight, 0.5–2 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.

usually congested terminally with 1 at node of dichotomies, reddish to purplish, cylindric, not ventricose, 3–4(–5) mm, often irregularly corrugate, without scarious or membranous margins, thinly pubescent;

teeth spreading, unequal, 0.7–1.3(–1.5) mm with longest of 3 longer ones more erect than others, these alternating with 3 shorter and less-prominent ones;

awns uncinate, 0.5–1 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.

mostly included;

perianth rose to red, cylindric, 3–4(–5) mm, pubescent;

tepals connate 1/2 their length, monomorphic to slightly dimorphic, oblong to obovate, rounded to obtuse or truncate apically, occasionally irregularly denticulate, those of outer whorl usually slightly broader and longer than those of inner whorl;

stamens 9, mostly included;

filaments distinct, 2.5–4(–4.5) mm, glabrous;

anthers pink to red, oblong, 0.5–0.6 mm.

brown, globose-lenticular, 3–3.5 mm.

brown, lenticular, 3–4 mm.

= (36), 40, (44).

= 38, (40, 42).