Flora of North America species comparison

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

spreading to erect (bushes mostly broader than high), highly branched, green when young, becoming reddish brown, long-stipitate-glandular.

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.

ascending;

blades oblanceolate, 5–40 × 2–7 mm, midnerves evident, (margins crispate) apices acute, faces long-stipitate-glandular;

fascicles absent or of 1–3 leaves.

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

2–20(–40) mm (bracts 1–10+, leaflike).

obconic, 5–9 × 2–5 mm.

campanulate, 9–15 × 10–15 mm.

0.

(0–)1–8;

laminae elliptic, 8–14 × 1.5–4 mm.

5–7;

corollas 5.8–8 mm.

15–40;

corollas 8.5–10.5 mm.

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.

17–31 in 2–3 series, green to tan, lanceolate to obovate, 8–18 × 1–4 mm, subequal, outer herbaceous or herbaceous-tipped, inner chartaceous to herbaceous-tipped, midnerves (+ 2 smaller, collateral nerves) often evident, (margins herbaceous or narrowly membranous, mostly stipitate glandular to fimbriate) apices acute to acuminate, abaxial faces stipitate-glandular.

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

borne singly or (2–3) in (leafy) racemiform arrays (1–4 cm wide).

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

pappi off-white to brown, 6–7.5 mm.

narrowly turbinate to ellipsoid, 5.5–8 mm, villous;

pappi tan, 7.5–9 mm.

= 18.

= 18.