Flora of North America species comparison

purple-streaked.

not purple-streaked.

blades elliptic, lanceolate, linear, or oblanceolate, 7–150 mm, margins (basal leaves) lobed to toothed.

blades lanceolate or oblanceolate to linear, 5–120 mm, margins (basal leaves) lobed to pinnatifid.

± ellipsoid to obconic, 4–9 × 4–9+ mm.

hemispheric or depressed-hemispheric, 4–12 × 4–14+ mm.

6–16;

laminae yellow, 1–4 mm.

6–16;

laminae usually proximally yellow, distally white or light yellow, rarely uniformly yellow throughout, 3–18(–24) mm.

9–80;

corollas 2.5–4.5 mm;

anthers ± dark purple.

28–100+;

corollas 3–5 mm;

anthers ± dark purple.

6–16, apices shorter than folded bases.

6–16, apices often longer (sometimes shorter) than folded bases.

glabrous.

glabrous.

in 1 series between ray and disc florets.

subtending ± all disc florets.

pappi of 10–16 white to rufous or purplish, ± equal bristles or setiform scales 2–4 mm, each proximally plumose, not adaxially woolly.

pappi 0 or of 2–18 tawny, subulate to setiform, unequal scales 1–4 mm, each ± scabrous, not adaxially woolly.

= 16, 32.

= 16.