Flora of North America species comparison

simple or branched among heads.

branched (prominently ribbed, strongly stipitate-glandular; caudices woody).

(2–)3–4 pairs, basal and cauline (basal usually withered by flowering, petiolate or subsessile, blades ovate or nearly round to oblong-ovate, much smaller than cauline; sterile rosettes often present, proximal cauline often crowded toward stems bases);

petiolate;

blades broadly to narrowly lanceolate, oblong-ovate, ovate-lanceolate, or round, 4–22 × 1–6 cm, (bases obtuse or cuneate to truncate) margins usually entire, sometimes sparsely denticulate, faces scantily to moderately pilose (hairs white), adaxial sparsely stipitate-glandular (distal cauline leaves sessile, extremely reduced, nearly linear to narrowly elliptic-lanceolate).

5–10 pairs (main stems, 2–6 pairs on branches; basal withered by flowering), cauline;

sessile;

blades obovate-oblong to ovate-oblong, (1–)2–4(–5) × 1–3 cm, margins ± entire, apices acute, faces sparsely to densely pilose, densely stipitate-glandular.

turbinate to narrowly campanulate.

narrowly turbinate.

usually 0 (sometimes peripheral florets pistillate; corollas yellow, laminae rudimentary).

0.

20–50;

corollas yellow (1 or more lobes sometimes expanded, giving appearance of laminae);

anthers yellow.

10–30;

corollas cream;

anthers yellow.

8–20, linear to narrowly lanceolate.

10–20, broadly lanceolate (stipitate-glandular).

(1–)3–9(–14; often nodding in bud).

10–20.

brown to black, 4–7 mm, glabrous or sparsely stipitate-glandular to densely hirsute;

pappi usually stramineous, rarely tawny, bristles barbellate to ± subplumose.

dark gray, 4.5–6.5 mm, stipitate-glandular;

pappi usually white, rarely tawny, bristles barbellate to subplumose.

= 38, 57, 76.

= 38.