Flora of North America species comparison

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

erect to ascending or divergent, much branched, sparsely hairy (hairs low, conic), resinous.

(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).

ascending to spreading, distally recurved;

blades narrowly obovate (sometimes conduplicate), 6–12 × 2–4 mm, midnerves raised adaxially, (margins often undulate) apices acute, mucronate to cuspidate, faces gland-dotted to resinous;

sometimes with axillary fascicles of 1–7 leaves.

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

1–15 mm (bracts 0 or 1–4, scalelike).

broadly obconic, 6–8 × 4–7 mm.

narrowly campanulate, 8–12 × 4–6 mm.

4–8;

laminae elliptic, 6–9 × 1–2 mm.

4–7;

laminae (white) 4–5.5 × 1–2 mm.

12–22;

corollas 5.5–6.5 mm.

10–18;

corollas (white) 5.5–7 mm.

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.

22–28 in 4–6 series, green to tan, squarrose or reflexed (outer), ovate to oblong, 2.5–7 × 0.6–1.5 mm, unequal, outer herbaceous or herbaceous-cuspidate, innermost chartaceous (bodies usually apically obtuse to retuse proximal to appendages), midnerves and subapical resin ducts darker, apices acute to acuminate, abaxial faces glabrous, resinous.

usually in cymiform arrays.

usually borne singly, sometimes in cymiform to racemiform arrays (4–6 cm wide).

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

pappi tan, 4–5.5 mm.

tan to brown, narrowly turbinate, 3.5–4 mm (5-ribbed), densely pilose, sericeous to villous;

pappi whitish, 5–6.5 mm.

= 18.

= 18.