Flora of North America species comparison

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, 1–6(–8) × 0.3–1.2(–1.8) cm.

persistent or quickly deciduous, basal, rosulate;

petioles indistinct;

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

diffuse, 0.5–2 dm;

bracts 3–8 × 0.5–1.5 mm, awns 0.2–0.5 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, 0.1–1 cm, sparsely glandular or glabrous, otherwise absent.

present or absent, erect to spreading.

concolored, narrowly to broadly turbinate, 4–7 mm, sparsely glandular;

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

awns greenish to reddish, 0.3–1 mm.

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

teeth 5(–6), awn-tipped.

2–3;

perianth greenish yellow to reddish, 1–2 mm;

tepals broadly oblanceolate, 3-lobed apically 1/5 their length, lobes not laciniate;

filaments 0.8–1.2 mm;

anthers red, oval, 0.2–0.4 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 to red-brown, 1.2–1.5 mm.

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

embryo curved.

= 20.

= 40.