Flora of North America species comparison

erect, green becoming whitish, glabrous, ± resinous.

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

cylindric to turbinate, 6.5–8.8 × 1.8–2.5 mm.

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

(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).

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.

12–24 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 condensed, cymiform arrays, not overtopped by leaves.

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

cylindric, 2.5–3 mm, faces hairy;

pappi tan, 3.1–3.9 mm.

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

pappi tan, 3.5–6 mm.

= 18.