Flora of North America species comparison

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

erect to spreading, green when young, becoming brown, branched proximally, densely floccose-tomentose, eglandular.

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 linear (adaxially sulcate), 10–30 × 1–2 mm, midnerves evident, apices acute, faces mostly densely tomentose, stipitate-glandular;

sometimes with axillary leaf fascicles.

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

2–20 mm (usually leafy).

obconic, 5–9 × 2–5 mm.

obconic, 9–11 × 6–9 mm.

0.

0.

5–7;

corollas 5.8–8 mm.

10–22;

corollas 9–11 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.

20–30 in 2–3 series, green to tan, oblong to lanceolate, 5–10 × 0.8–1.5 mm, subequal, mostly chartaceous, outer herbaceous or herbaceous-tipped, midnerves usually evident, apices acute to acuminate, abaxial faces hairy, stipitate-glandular.

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

borne singly or in cymiform arrays.

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

pappi off-white to brown, 6–7.5 mm.

brownish, narrowly oblong, 5–6 mm, densely hairy;

pappi tan, 8–10 mm.

= 18.