Flora of North America species comparison

erect to ascending, green when young, fastigiately branched, glabrous, gland-dotted, resinous.

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

blades ascending, sometimes spreading when older, filiform to narrowly oblanceolate (adaxially sulcate to concave), 10–20 × 1–2 mm, midnerves not evident, apices acute, sometimes apiculate, faces glabrous, regularly gland-dotted (in circular, deep pits), resinous;

axillary leaf fascicles sometimes present, shorter than subtending leaves.

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.

3–15 mm (bracts 3–20+, mostly leaflike, distal scalelike).

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

turbinate, 3–5 × 3–5 mm.

campanulate, 12.5–15 × 5–9 mm.

3–6;

laminae 4–5 × 1–2 mm.

0.

6–16;

corollas 5–6 mm.

14–24;

corollas 9.5–10.8 mm.

12–20 in 3–4 series, tan, linear to lanceolate, 1–3.5 × 0.5–1 mm, unequal, mostly chartaceous, sometimes herbaceous-tipped, erect, midnerves raised, somewhat expanded apically, subapical resin ducts usually present, (margins scarious to narrowly membranous, glabrous or ciliate) apices erect, acute, sometimes apiculate, abaxial faces glabrous.

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.

in irregular cymiform arrays (to 7 cm wide).

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

tan to brown, turbinate to narrowly oblanceolate, 3.5–4 mm (ribs ca. 5), villous;

pappi off-white to brown, 3.5–5 mm.

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

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

= 18.

= 18.