Flora of North America species comparison

basal;

petiole 0.5–2 cm;

blade oblanceolate, 0.5–2.5 × 0.3–0.8 cm, thinly pubescent.

basal;

petiole 0.5–1 cm;

blade oblanceolate to elliptic, 0.3–1 × 0.2–0.3 cm, thinly pubescent.

with involucres in dense clusters 1–2 cm diam., yellowish green;

bracts 2, without whorl of sessile bracts about midstem, usually leaflike, oblanceolate, 0.5–1.5 cm × 1.5–3 mm, gradually reduced and becoming scalelike at distal nodes, linear, aciculate, acerose, 0.3–0.8 cm × 1–2 mm, awns straight, 1–2.5 mm.

with involucres in small clusters 0.5–1 cm across even at dichotomies, greenish or reddish;

bracts 2, petiolate or sessile, similar to proximal leaf blades, oblanceolate or narrowly elliptic to linear-lanceolate, 0.3–1 cm × 1–3 mm, awns absent.

3–10+, yellowish green, urceolate, slightly ventricose basally, 3–4.5 mm, slightly corrugate, without scarious or membranous margins, thinly pubescent;

teeth spreading, unequal, 1–3 mm;

awns straight or uncinate with longer anterior one straight or slightly curved, mostly 2 mm, others uncinate, 0.5–1.5 mm.

1, greenish or reddish, campanulate, 5–6-ribbed, 1.5–2.5 mm, corrugate, thinly pubescent;

teeth 5–6, unequal, 3 longer ones 1.5–3 mm, these alternating with 2 or 3 shorter ones 1–2 mm, anterior tooth not leaflike;

awns of prominent teeth uncinate and 1.5–3 mm, those of shorter teeth straight and 1–2 mm.

exserted;

perianth bicolored with floral tube greenish white to white and the lobes white to pinkish, cylindric, 5–6 mm, sparsely pubescent;

tepals connate 2/3 their length, dimorphic, obovate, those of outer whorl erect, slightly longer than those of inner whorl, 2-lobed apically, those of inner whorl erect, 2-lobed, erose apically;

stamens 9, included;

filaments distinct, 5–5.5 mm, glabrous;

anthers yellow to golden, oblong, 1–1.2 mm.

1, included to slightly exserted;

perianth white to rose, cylindric, 1.5–1.8(–2) mm, densely pubescent abaxially;

tepals connate 2/3 their length, monomorphic, oblong, obtuse to truncate or minutely emarginate apically;

stamens (6) 9, slightly exserted;

filaments distinct, 0.8–1 mm, glabrous;

anthers reddish, ovate, 0.2–0.3 mm.

brown, globose-lenticular, 3–3.5 mm.

dark brown to black, 3-gonous, 2–2.5 mm.

= ca. 38.