Flora of North America species comparison

mostly simple.

(1–3 together) usually simple, rarely branched (moderately to densely hairy, hairs translucent with purple septa).

3–8 pairs, mostly crowded toward bases; petiolate (at least proximal);

blades elliptic to oblanceolate or obovate, 5–10 × 0.5–3.5 cm, margins entire, apices acute, faces densely hairy (hairs relatively short, curly) and sessile-glandular (distal leaves sessile, much reduced).

(2–)3–5(–6) pairs, usually crowded toward stem bases; petiolate or sessile (petioles short-winged);

blades elliptic, lanceolate, or broadly oblanceolate, 3–10 × 1–2.5 cm, margins usually entire proximal to mid blade, subentire to denticulate distally, apices acute to obtuse, faces: abaxial paler and often glabrous, adaxial slightly hairy.

campanulate to hemispheric.

turbinate-campanulate (bases moderately villous, hairs brownish).

5–12;

corollas yellow.

8–13;

corollas yellow (laminae 14–20 mm).

(functionally staminate): corollas yellow;

anthers yellow (styles rarely exserted).

corollas yellow;

anthers dark purple.

5–12 (in 1 series), oblong or elliptic.

11–15, lanceolate to elliptic (apices obtuse, tips blunt, callous).

1–6.

1 (nodding).

brown to black, 4–10 mm, sparsely to densely hirsute (hairs usually simple, rarely duplex) and sparsely stipitate-glandular;

pappi 0.

brown, 5–6 mm, sparsely strigose (hairs simple, apically pointed) or glabrous;

pappi tawny, bristles barbellate.

= 38, 76.

= 38, 57, 76.