Flora of North America species comparison

single.

single or loosely clustered.

basal and cauline (basal and proximal sometimes withering before flowering, mid-stem leaves prominent at flowering);

petioles weakly defined;

blades oblanceolate to linear-oblanceolate or spatulate, 5–15 × 0.5–3(–5) cm, margins subentire to coarsely dentate or subpinnatifid (distal leaves bractlike).

basal and cauline;

petioles weakly winged (passing into blades);

blades ovate to lanceolate, 3–5 × 0.5–1.5 cm, margins subentire to denticulate (cauline narrower, sessile, bractlike).

± abruptly contracted to peduncles.

± abruptly contracted to peduncles.

(13–)21+;

corolla laminae 5–9+ mm (sometimes incompletely opened, appearing tubular).

usually 13;

corolla laminae 9–12 mm.

30–50;

corollas yellow.

30–50+;

corollas yellow.

usually 21, green or yellowish green (tips sometimes pinkish), 4–10 mm.

usually 21, green (tips sometimes purplish), 6–8 mm.

(4–)6–20(–40+), in loose to crowded, corymbiform arrays.

1(–4).

glabrous;

pappi white or dirty white.

pubescent;

pappi white.

= 48.

= 48.