Flora of North America species comparison

erect to spreading, green when young, fastigiately branched, glabrous or sparsely hairy, gland-dotted, resinous.

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

mostly ascending to spreading, older deflexed;

blades filiform (sulcate to concave), 25–90 × 0.5–3 mm, midnerves obscure to evident, apices acuminate to attenuate, often mucronate, faces glabrous or sparsely hairy, gland-dotted (in deep, circular pits), resinous;

axillary leaf fascicles sometimes present.

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.

1–15 mm (bracts 0–7, scalelike, resembling phyllaries).

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

turbinate to subcampanulate, 4–6 × 3.5–4.5 mm.

campanulate, 12.5–15 × 5–9 mm.

0.

0.

10–25;

corollas 4–5 mm.

14–24;

corollas 9.5–10.8 mm.

20–25 in 3–4 series, tan, narrowly triangular to lanceolate, 1.5–5 × 0.5–1 mm, unequal, mostly chartaceous, midnerves evident, raised, mostly uniform in width to slightly dilated apically, (margins membranous, fimbriate) apices erect, acute, abaxial faces resinous.

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 rounded, cymiform arrays (to 10 cm wide).

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

tan to brown, narrowly turbinate, 2–3 mm (5-ribbed), hairy;

pappi tan, 3.5–4.5 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.