Flora of North America species comparison

green, becoming whitish tan, ± ridged from leaf bases, densely puberulent.

ascending, green, soon becoming tan, glabrous or puberulent, sometimes resin-dotted, often resinous.

erect or closely ascending;

sessile;

blades with evident midnerves, linear to oblanceolate or narrowly oblong, 7–30 × 1.5–7 mm, flat to keeled, apices acute (often apiculate), faces glabrous or puberulent, sometimes sparsely stipitate-glandular.

ascending, spreading, or deflexed;

sessile;

blades with evident midnerves plus sometimes 1–2 pairs of smaller, collateral nerves, linear to lanceolate, 10–75 × 0.5–10 mm, flat or sulcate, often twisted, margins often undulate, sometimes ciliate, apices acute to apiculate, faces glabrous or puberulent.

obconic, 9–15 × 3–5 mm.

cylindric to obconic or campanulate, 4–7 × 1.5–2.5 mm.

5–6;

corollas 7–11 mm, lobes 1–2.1 mm;

style branches 2.4–3.3 mm, appendages 1.5–2 mm.

(3–)4–5(–14);

corollas 3.5–6.5 mm, lobes 0.7–1.7 mm;

style branches 2.2–3.2 mm (exserted beyond spreading corolla lobes), appendages 0.8–1.5 mm (length shorter than stigmatic portion).

20–25 in 4–6 series, in 5 strong vertical ranks, tan, often with green and/or purplish markings, midnerves evident throughout and ± expanded apically, lanceolate to elliptic, 3–8 × 0.5–1.5 mm, unequal, outer often herbaceous, inner scarious, strongly keeled, apices acute to acuminate, flat, faces puberulent.

12–24 in 3–5 series, in spirals or weak vertical ranks, mostly tan, green to brown subapical patch often present, midnerves usually evident (at least distally), linear-oblong, lanceolate to elliptic or obovate to spatulate, 1–5 × 0.5–1.2 mm, unequal, chartaceous, margins scarious, eciliate or ciliolate to erose-ciliolate, flat or convex, sometimes weakly keeled, apices acute to obtuse or rounded, sometimes apiculate, flat, faces glabrous or puberulent.

in densely cymiform arrays, not overtopped by distal leaves.

in dense, rounded cymiform arrays (to 7 cm wide), not overtopped by distal leaves.

tan, subcylindric (tapering proximally), ± flattened, 5–6.5 mm, faces glabrous, sparsely glandular distally;

pappi whitish tan, 5.5–7.5 mm.

tan to reddish brown, turbinate, 2.5–4.2 mm, ± 5-angled, moderately to densely hairy;

pappi tan, 3.5–6 mm.

= 18.