Flora of North America species comparison

ascending, green, ± puberulent, stipitate-glandular.

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

erect to closely ascending;

sessile;

blades with ± evident midnerves, linear to narrowly elliptic, 7–20 × 0.7–1.5 mm, sulcate, sometimes apiculate, apices acute, faces moderately puberulent, uniformly stipitate-glandular.

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.

subcylindric, 9–11 × 2.5–3.5 mm.

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

5;

corollas 5.5–7.5 mm, lobes 0.9–1.5 mm;

style branches 2.7–3.2 mm, appendages 1–1.7 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.

± 20 in 4–5 series, in 4–5 strong vertical ranks, tan, often with green or dark subapical splotch, midnerves often obscure, linear or lanceolate to elliptic, 2–9 × 0.5–1.3 mm, unequal, outer ± herbaceous, inner chartaceous, strongly keeled, apices acute to rounded, tip cupped, faces of outer glabrous or puberulent.

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 small cymiform to racemiform arrays.

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

tan, elliptic, 4.2–6 mm, mostly 5-ribbed, faces glabrous, sparsely glandular;

pappi tan, 6–7.5 mm.

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

pappi tan (fine), 3.5–5 mm.

= 18.

= 18.