Flora of North America species comparison

stems prostrate or ascending to erect, green when young (± concealed by tomentum), becoming tan to brown, moderately branched, densely floccose-tomentose, eglandular.

spreading to ascending or erect, green when young, highly branched, glabrous, gland-dotted (sometimes in pits), resinous.

ascending;

blades elliptic or oblanceolate (flat), 6–15 × 2.5–5 mm, midnerves prominent, apices acute (often curved downward), faces densely silvery white floccose-tomentose, eglandular;

fascicles absent.

ascending-spreading;

blades cuneate to spatulate, 2–25 × 2–16 mm, midnerves evident or faint, (margins usually flat) apices rounded, obtuse, or retuse, sometimes mucronate, faces glabrous, gland-dotted (in pits), thickly resinous;

axillary leaf fascicles rarely present.

1–5 mm (tomentose, bracts 0–3, phyllary-like).

2–10 mm (bracts 0–10+, scalelike).

obconic, 9–12 × 3–4 mm.

turbinate to narrowly campanulate, 6–12.5 × 4–14 mm.

0.

0(–7);

laminae 3–4.3 × 1–1.5 mm.

4–9;

corollas ca. 9 mm.

7–70;

corollas ca. 5.5 mm.

11–15 in 2–3 series, lanceolate or elliptic to oblanceolate, 1.5–5 × 0.8–1.3 mm, subequal, outer herbaceous or herbaceous-tipped, inner mostly chartaceous or herbaceous-tipped, midnerves conspicuous, raised, (margins: outer herbaceous, entire, floccose-tomentose, inner narrowly scarious, minutely lacerate) apices acute to acuminate, outer abaxial faces floccose-tomentose, inner glabrate.

20–60 in 3–7 series, tan, ovate to lanceolate, 2–6 × 0.5–2.5 mm, unequal, mostly chartaceous, sometimes each with herbaceous subapical patch, midnerves evident on proximal 1/2 or throughout, subapical resin ducts 0 or slightly darker, thickened and expanded, (margins membranous, weakly lacerate) apices acute to acuminate or obtuse, abaxial faces glabrous.

usually borne singly, sometimes (2–3) in racemiform arrays (5–20 mm wide).

usually borne singly, sometimes in rounded, cymiform arrays (to 5 × 8 cm).

tan to brown, narrowly oblanceoloid, 5–7 mm (5-ribbed), densely sericeous;

pappi tan, 8–9 mm.

tan to brown, turbinate, 2.5–3 mm, sericeous to villous;

pappi off-white to brown, 6.5–8 mm.

= 18.