Flora of North America species comparison

ascending, green becoming tan, glabrous or puberulent, resin-dotted to resinous.

ascending to spreading;

sessile;

blades with faint midnerves, linear to oblanceolate, 10–40 × 1–2.5 mm, flat or sulcate, usually not twisted, margins eciliate or sparsely puberulent, apices acute to apiculate, faces usually glabrous, sometimes puberulent, usually gland-dotted, resinous.

cylindric to obconic, (5–)6–8 × 2–4 mm.

5–7;

corollas 4.5–6.5 mm, lobes 1.2–1.7 mm;

style branches 2.5–3.8 mm, appendages 0.8–1.2 mm.

12–18 in 3–4 series, in weak vertical ranks, mostly tan, greenish apically, midnerves evident and ± expanded distally, ovate to elliptic, unequal, 1.5–7 × 1–1.8 mm, chartaceous, weakly keeled, margins scarious, ciliate to lacerate, apices acute to obtuse-rounded, faces glabrous or gland-dotted.

in dense cymiform arrays (to 5 cm wide), sometimes overtopped by distal leaves.

reddish brown, cylindric to turbinate, 4–5 mm, 5–10-nerved, faces glabrous;

pappi tan (fine), 3.5–5 mm.

= 18.