Flora of North America species comparison

erect, green becoming whitish, glabrous, ± resinous.

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

ascending to spreading;

petiolate;

blades mostly 3-nerved (nerves reticulate, raised), elliptic to oblanceolate or obovate, 20–80 × (7–)10–25 mm (mostly larger basally, ± reduced distally), flat, apices acute, faces glabrous, gland-dotted.

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 turbinate, 6.5–8.8 × 1.8–2.5 mm.

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

5(–6);

corollas 4–5 mm, lobes 0.8–1.2 mm;

style branches 2.2–2.7 mm, appendages 0.8–1.2 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.

19–24(–30) in 3–4 series, in vertical ranks, tan with apical green spot, midnerves evident distally, ovate to lanceolate, 1.5–6 × 0.7–1.5 mm, unequal, chartaceous, apices obtuse to acuminate, flat, faces glabrous.

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 condensed, cymiform arrays, not overtopped by leaves.

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

cylindric, 2.5–3 mm, faces hairy;

pappi tan, 3.1–3.9 mm.

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

pappi tan (fine), 3.5–5 mm.

= 18.

= 18.