Flora of North America species comparison

ascending to erect, green when young, fastigiately branched, glabrous or sparsely hairy, resinous.

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

ascending to spreading;

blades filiform (terete or adaxially sulcate), 3–18(–23) × 0.3–1 mm, midnerves obscure, apices acute, often mucronate, faces glabrous or hairy, gland-dotted (in circular, deep pits), resinous;

axillary fascicles of 2–12 leaves, shorter than subtending leaves.

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.

1–30 mm (bracts 4+, leaflike).

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

subcampanulate, 5–8 × 2.5–4.5 mm.

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

2–6;

laminae 4–6 × 1–2 mm.

0.

5–14;

corollas 5.5–8 mm.

10–25;

corollas 4–5 mm.

16–24 in 3–5 series, mostly tan, ovate to elliptic, 2.5–7 × 0.6–1.5 mm, unequal, outer ± herbaceous or herbaceous-appendaged, mid and inner mostly chartaceous, midnerves raised, subapical resin ducts darker, ± thickened, expanded apically, (margins ciliate) apices erect, acute to acuminate or mucronate to cuspidate, abaxial faces glabrous or sparsely hairy.

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.

in cymiform to paniculiform arrays (2–9 cm wide).

in rounded, cymiform arrays (to 10 cm wide).

tan to brown, subcylindric, 2.5–4 mm (ribs 8–10), glabrous or hairy, more densely distally;

pappi off-white to brown, 5–7 mm.

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

pappi tan, 3.5–4.5 mm.

= 18.

= 18.