Flora of North America species comparison

erect or more commonly spreading to prostrate.

arising directly from the root, spreading or prostrate, sometimes erect, solid, not fistulose or disarticulating into ringlike segments, glabrous or sparsely glandular.

blades spatulate to oblanceolate or linear, 1–5(–9) × 0.2–0.7(–2) cm.

persistent or quickly deciduous, basal, rosulate;

petioles indistinct;

blade broadly linear or spatulate to oblanceolate, margins entire, strigose and glandular.

open, 0.5–4 dm;

bracts mostly 2–8 × 1–3 mm, awns 0.8–1 mm.

terminal, cymose;

branches mostly dichotomous, not brittle or disarticulating into segments, round, glabrous or sparsely glandular;

bracts (2–)3(–4) at first node, 2–3 at distal nodes, distinct or connate, often positioned to side of node, scalelike, triangular or linear to ovate and 3-lobed, awned, sparsely glandular.

erect to spreading, 0.5–1.5 cm, glabrous except sparsely glandular proximally.

present or absent, erect to spreading.

concolored, broadly turbinate, 3–8 mm, sparsely glandular;

teeth 5(–6), connate 1/3–1/2 their length;

awns greenish to reddish, 0.3–2 mm.

1 per node, not ribbed, tubular, narrowly turbinate to funnelform;

teeth 5(–6), awn-tipped.

3–5(–10);

perianth white to pink or reddish, 2.5–4 mm;

tepals oblong, 3-lobed apically 1/3–1/2 their length, lobes sometimes laciniate;

filaments 1–4 mm;

anthers red to maroon, ellipsoid to oval, 0.5–0.7 mm.

2–5(–10) per involucre at any single time during full anthesis;

perianth white to rose or greenish yellow to red, funnelform when open, tubular when closed, hirsute and sparsely glandular abaxially;

tepals 6, connate 1/4–1/3 their length, monomorphic, 3–5-lobed or laciniate apically;

stamens 9;

filaments basally adnate, glabrous or minutely papillate basally;

anthers red to maroon, ellipsoid or oblong to oval.

golden-brown, 1.2–2 mm.

usually included, golden- to red-brown, not winged, 3-gonous, glabrous.

embryo curved.

= 20.

= 40.