Flora of North America species comparison

erect to spreading, green when young, becoming tan, branched proximally, often with scattered, crinkled hairs and short- stipitate-glandular hairs.

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

mostly erect or ascending;

blades oblanceolate to narrowly spatulate, 20–40 × 2–3(–5) mm, midnerves evident, apices acute to acuminate, faces short-stipitate-glandular, sometimes gland-dotted (sessile), resinous;

axillary fascicles of 1–7 reduced leaves often proximally present, distally absent.

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.

1–15 mm (bracts 0–3, usually resembling phyllaries).

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

narrowly campanulate, 12–15 × 4.5–5.5 mm.

obconic, 5–9 × 2–5 mm.

0.

0.

10–16;

corollas 9.1–11.5 mm.

5–7;

corollas 5.8–8 mm.

18–24 in (3–)4 series, tan, ovate or lanceolate to elliptic, 4–11 × 0.6–1.2 mm, subequal, mostly chartaceous, midnerves raised, evident, apices acute to cuspidate, herbaceous-tipped, abaxial faces resinous.

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 in paniculiform or cymiform arrays, sometimes borne singly.

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

tan to reddish, ellipsoid, 6–10 mm, glabrate or apically sparsely hairy;

pappi off-white to brown, sometimes reddish, 7–9 mm.

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

pappi off-white to brown, 6–7.5 mm.

= 18.

= 18.