Flora of North America species comparison

erect, green when young, much branched, short-stipitate-glandular.

erect to spreading, green when young, often black-banded or splotched (from fungal infections), fastigiately branched, glabrous, gland-dotted, resinous.

erect to ascending;

blades oblanceolate to spatulate, 15–30 × 3–8 mm, midnerves and 2 smaller collateral veins evident, (margins crisped) apices acute, often apiculate, faces short-stipitate-glandular, resinous.

mostly ascending;

blades filiform (adaxially sulcate), 10–35 × 0.5–1.5 mm, midnerves obscure, apices apiculate, faces glabrous, gland-dotted (in circular, deep pits), resinous;

axillary fascicles usually absent.

5–40 mm (bracts 0–3, reduced, leaflike).

2–12 mm (bracts 0–10, leaflike).

campanulate, 12.5–15 × 5–9 mm.

subcylindric, 5.5–9 × 3.5–7 mm.

0.

0.

14–24;

corollas 9.5–10.8 mm.

5–8;

corollas 5–7 mm.

24–35 in 3–4 series, green to tan, ovate or lanceolate to elliptic, 8–12 × 1–2.5 mm, subequal, outer herbaceous to chartaceous, inner mostly chartaceous, midnerves slightly raised, evident entire length of bodies, (margins ciliate) apices acute to acuminate or cuspidate (outer), appendages slender (outer), abaxial faces glabrous.

13–20 in 3–5 series, tan, lanceolate to elliptic, 1–5 × 0.5–1.7 mm, unequal, mostly chartaceous, membranous, midnerves not or slightly raised, faint on distal 1/2, (margins entire, sometimes ciliate distally) apices erect, acute to rounded, apiculate, abaxial faces glabrous, ± resinous.

usually in loose, paniculiform or congested, cymiform arrays, sometimes borne singly.

in paniculiform arrays (5–50 mm wide).

tan to reddish, elliptic, 6.5–8.5 mm, sparsely, evenly strigose;

pappi usually off-white to brown, sometimes reddish, 8–9.5 mm.

tan to brown, narrowly elliptic to oblanceoloid, 3.5–4.5 mm (ribs ca. 5), sericeous;

pappi off-white to brown, 5.5–6.5 mm.

= 18.

= 18.