Flora of North America species comparison

single, greenish when young, becoming tan to gray, fastigiately branched (± angled from leaf bases), glabrous or scabridulous.

ascending;

blades with midnerves plus 2 fainter collateral nerves evident, broadly linear to lanceolate or oblong, 20–75 × 3–8 mm, flat, margins scabrellous, apices acute to acuminate, faces glabrous, gland-dotted (in shallow pits).

obconic, 4.5–7 × 1.5–2.2 mm.

with 0–2 scales, 0–0.5 mm.

0.

(4–)5(–6);

corollas 4–5.5 mm, glabrous, lobes 1–1.5 mm;

style branches 1.9–2.3 mm, appendages subulate, 0.7–1.1 mm.

15–18 in 3–4 series, in 5 vertical ranks, mostly tan, midnerves evident on distal 1/2, ± keeled, elliptic to lanceolate, 0.7–6.5 × 0.5–1.1 mm, unequal, outer often thickened and herbaceous subapically, apices acute, acuminate, or rounded, faces glabrous or sparsely scabrous.

in corymbiform arrays 3–12 cm wide.

tan to brownish, subcylindric, 2.5–3.5 mm, 10–12-ribbed, densely hairy;

pappi whitish tan, 4.5–7 mm.

= 18.