Flora of North America species comparison

erect to ascending, green when young, fastigiately branched, glabrous, gland-dotted, resinous.

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

blades ascending, sometimes spreading when older, filiform to narrowly oblanceolate (adaxially sulcate to concave), 10–20 × 1–2 mm, midnerves not evident, apices acute, sometimes apiculate, faces glabrous, regularly gland-dotted (in circular, deep pits), resinous;

axillary leaf fascicles sometimes present, shorter than subtending leaves.

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.

3–15 mm (bracts 3–20+, mostly leaflike, distal scalelike).

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

turbinate, 3–5 × 3–5 mm.

obconic, 9–12 × 3–4 mm.

3–6;

laminae 4–5 × 1–2 mm.

0.

6–16;

corollas 5–6 mm.

4–9;

corollas ca. 9 mm.

12–20 in 3–4 series, tan, linear to lanceolate, 1–3.5 × 0.5–1 mm, unequal, mostly chartaceous, sometimes herbaceous-tipped, erect, midnerves raised, somewhat expanded apically, subapical resin ducts usually present, (margins scarious to narrowly membranous, glabrous or ciliate) apices erect, acute, sometimes apiculate, abaxial faces glabrous.

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.

in irregular cymiform arrays (to 7 cm wide).

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

tan to brown, turbinate to narrowly oblanceolate, 3.5–4 mm (ribs ca. 5), villous;

pappi off-white to brown, 3.5–5 mm.

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

pappi tan, 8–9 mm.

= 18.