Flora of North America species comparison

1–few, few–many branched distally.

few–many, erect, simple or branched.

basal and proximal cauline petiolate or tapering to base, usually absent at anthesis, blades oblong to oblanceolate, 2–15 cm, margins entire to dentate or pinnately lobed;

cauline long-decurrent, blades linear to oblong or oblanceolate, 1–5 cm, entire or dentate.

± arachnoid-tomentose;

basal and proximal cauline winged-petiolate, blades lanceolate to ovate, 3–15 cm, margins entire or dentate;

distal cauline sessile, sometimes clasping, not decurrent, well developed.

ovoid, 10–15 mm, loosely cobwebby-tomentose or becoming glabrous.

ovoid to ± spheric, 15–20 mm.

many;

corollas yellow, those of sterile florets 10–12 mm, slender, inconspicuous, those of fertile florets 10–12 mm.

many, the peripheral sterile;

corollas pink or purple, those of sterile much expanded and exceeding corollas of fertile florets, those of fertile 20–25 mm.

appendages entire, acute or spine-tipped.

tips erect, ovate or orbiculate, irregularly dentate or lobed.

disciform, 1–few at branch tips, borne singly or in open leafy corymbiform arrays, sometimes clustered in distal axils, sessile or pedunculate.

usually radiant, usually borne singly.

dull white or light brown, ca. 2.5 mm, finely hairy;

pappi of many white, unequal, stiff bristles 2.5–3 mm.

tan, 3–4 mm, finely hairy;

pappi 0 or of many unequal bristles 0.5–2 mm.

phyllaries: bodies ± stramineous, ovate, appendages purplish, spiny-fringed at base, each tipped by slender spine 5–10 mm.

phyllaries: bodies lanceolate to ovate, loosely tomentose or glabrous, appendages brown or blackish, lanceolate to ovate, ± covering bodies of adjacent phyllaries, tips often recurved, elongate, featherlike, pectinately dissected into long, filiform lobes.

= 24.

= 22 (Russia), 44 (Slovenia).