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 ascending, green when young, fastigiately branched, gland-dotted (in pits), resinous.

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.

mostly ascending to spreading;

blades filiform (adaxially sulcate), 10–35 × 0.5–1.5 mm, midnerves obscure, apices acute to obtuse or rounded, faces glabrous, gland-dotted (in circular, deep pits), resinous.

2–10 mm (bracts 0–10+, scalelike).

0.5–2 mm (bracts 0–3, mostly like outer phyllaries).

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

obconic, 5–9 × 2–5 mm.

0(–7);

laminae 3–4.3 × 1–1.5 mm.

0.

7–70;

corollas ca. 5.5 mm.

5–7;

corollas 5.8–8 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.

16–20 in 3–5 series (in vertical ranks), tan, lanceolate to oblong, 1–7 × 0.5–1.5 mm, strongly unequal, mostly chartaceous, midnerves mostly obscure, apices acute to rounded (outer each tipped with subspheric resin-gland), abaxial faces resinous.

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

in cymiform to racemiform arrays (1–3 cm wide).

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

pappi off-white to brown, 6.5–8 mm.

tan to brown, narrowly ellipsoid, 3–4 mm, sericeous;

pappi off-white to brown, 6–7.5 mm.

= 18.

= 18.