Flora of North America species comparison

1–50+, initially scapiform, later elongate and leafy (after rosette leaves wither), erect, eglandular or stipitate-glandular, especially near heads.

1–20+, ± scapiform, erect, eglandular or lightly glandular-villous.

initially produced basally (rosettes);

later leaves cauline;

sessile or petiolate;

blades oblanceolate to spatulate, 1.5–18 cm, usually irregularly pinnately lobed, terminal lobes often denticulate, faces glabrous, eglandular or loosely glandular-villous;

cauline (appearing opposite on late-season stems), narrowly oblanceolate to linear, mostly entire.

basal (rosettes) and proximally cauline (on scarcely elongated branches close to ground); petiolate (petioles sometimes ciliate-glandular);

blades linear, oblanceolate, or obovate, 1–7 cm, margins entire or sparingly lobed, lobes linear or triangular to rounded, apices acute or obtuse, faces eglandular.

from rosettes (early) or axillary or terminal on stems (later).

from basal rosettes.

4.5–8 mm.

2.5–6.5 mm.

8–35;

corollas yellow, often purplish abaxially, 5–12 mm.

5–25;

corollas yellow, 5–9 mm.

9–15, reflexed in fruit, lanceolate, midveins obscure, apices acute.

4–7, erect in fruit, lanceolate in flower, becoming ovate-lanceolate in fruit, midveins and sometimes secondary veins becoming prominent in fruit, curving inward at bases to form keels, apices acute.

borne singly.

borne singly.

dark reddish brown, narrowly obconic, 1.5–2.3 mm, 15–20-ribbed;

pappi of 5, hyaline, rounded outer scales 0.5–1 mm plus 5, scabrous inner bristles 4–6 mm.

reddish brown, broadly obconic, 1.2–1.8 mm (apical areas broader than basal areoles), 10–15-ribbed;

pappi of 5, hyaline, rounded outer scales 0.4–0.6 mm plus usually 5, sometimes 0, scabrous inner bristles 1.2–2 mm.

= 10, 20.

= 12.