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 wingless or weakly winged (1–4 cm);

blades ovate to subrhombic, 1–3 × 1–2 cm, margins usually irregularly toothed, sometimes subentire (proximal cauline leaves similar, petioles winged; distal leaves smaller, sessile, clasping, bractlike).

± abruptly contracted to peduncles.

± abruptly contracted to peduncles.

(13–)21+;

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

(0–)13;

laminae 7–12+ mm.

30–50;

corollas yellow.

30–50;

corollas yellow or light yellow.

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

13(–21), greenish (tips greenish or purplish, usually obscured by dense, brown indument), 7–10 mm.

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

1(–2).

glabrous;

pappi white or dirty white.

glabrous;

pappi white or whitish.

= 48.

= 48, 96.