Flora of North America species comparison

spreading to ascending or erect, green when young, highly branched, glabrous, gland-dotted (sometimes in pits), resinous.

erect to spreading (close to the ground), green when young, becoming pale reddish brown, highly branched, coarsely long-stipitate-glandular.

ascending-spreading;

blades cuneate to spatulate, 2–25 × 2–16 mm, midnerves evident or faint, (margins usually flat) apices rounded, obtuse, or retuse, sometimes mucronate, faces glabrous, gland-dotted (in pits), thickly resinous;

axillary leaf fascicles rarely present.

(crowded) ascending;

blades elliptic to oblanceolate, 10–25 × 3–8 mm, midnerves evident (1–2 fainter, collateral nerves often present), (margins undulate) apices acute, apiculate, faces long-stipitate-glandular;

fascicles usually absent, (sometimes of 1–3 reduced leaves).

2–10 mm (bracts 0–10+, scalelike).

1–12 mm (bracts 3–20, crowded, leafy, grading into phyllaries).

turbinate to narrowly campanulate, 6–12.5 × 4–14 mm.

broadly obconic, 6–8 × 4–7 mm.

0(–7);

laminae 3–4.3 × 1–1.5 mm.

4–8;

laminae elliptic, 6–9 × 1–2 mm.

7–70;

corollas ca. 5.5 mm.

12–22;

corollas 5.5–6.5 mm.

20–60 in 3–7 series, tan, ovate to lanceolate, 2–6 × 0.5–2.5 mm, unequal, mostly chartaceous, sometimes each with herbaceous subapical patch, midnerves evident on proximal 1/2 or throughout, subapical resin ducts 0 or slightly darker, thickened and expanded, (margins membranous, weakly lacerate) apices acute to acuminate or obtuse, abaxial faces glabrous.

25–30 in 3–4 series, green to tan, ovate to oblong, 4–8 × 0.7–1.5 mm, unequal, outer herbaceous or with herbaceous appendages, inner mostly chartaceous, midnerves usually evident, (margins entire, outer often herbaceous, inner scarious) apices acute to acuminate or attenuate, abaxial faces mostly stipitate-glandular.

usually borne singly, sometimes in rounded, cymiform arrays (to 5 × 8 cm).

usually in cymiform arrays.

tan to brown, turbinate, 2.5–3 mm, sericeous to villous;

pappi off-white to brown, 6.5–8 mm.

tan to brown, narrowly turbinate, 3–4.5 mm (usually 5-ribbed), moderately sericeous;

pappi tan, 4–5.5 mm.

= 18.

= 18.