Flora of North America species comparison

erect to spreading or recurved, green when young, soon becoming tan to brown, then nearly black when older, highly branched, twigs glabrous, glandular, usually resinous.

erect to spreading, green when young, becoming tan, branched proximally, often with scattered, crinkled hairs and short- stipitate-glandular hairs.

ascending to spreading;

blades usually elliptic to oblanceolate, occasionally spatulate, 10–15 × 0.5–1.5 mm, mostly adaxially sulcate, margins entire, midnerves usually obscure to weakly evident, apices acute, apiculate, faces glandular, sometimes irregularly gland-dotted (in shallow pits), resinous;

axillary fascicles present, persistent.

mostly erect or ascending;

blades oblanceolate to narrowly spatulate, 20–40 × 2–3(–5) mm, midnerves evident, apices acute to acuminate, faces short-stipitate-glandular, sometimes gland-dotted (sessile), resinous;

axillary fascicles of 1–7 reduced leaves often proximally present, distally absent.

0.2–5 mm (mostly ebracteate, glabrous).

1–15 mm (bracts 0–3, usually resembling phyllaries).

obconic, 5.5–7.5 × 2.5–4 mm.

narrowly campanulate, 12–15 × 4.5–5.5 mm.

1–7;

laminae elliptic, 3–4 × 0.8–1.3 mm.

0.

4–8;

corollas 4.5–6.5 mm.

10–16;

corollas 9.1–11.5 mm.

22–30 in 4–5 series, mostly tan, lanceolate to elliptic, 2–6.5 × 0.5–1.2 mm, strongly unequal, outer sometimes herbaceous or herbaceous-tipped (body apices obtuse or truncate to retuse, appendages erect), midnerves not evident or slightly raised, slightly expanded subapically, (mostly margins narrowly membranous, entire) apices acute to acuminate or attenuate, mid often aristate to cuspidate, abaxial faces glabrous, resinous.

18–24 in (3–)4 series, tan, ovate or lanceolate to elliptic, 4–11 × 0.6–1.2 mm, subequal, mostly chartaceous, midnerves raised, evident, apices acute to cuspidate, herbaceous-tipped, abaxial faces resinous.

in congested, cymiform arrays (0.5–2.5 cm wide).

usually in paniculiform or cymiform arrays, sometimes borne singly.

tan, narrowly oblanceoloid, 4–5.5 mm, glabrous or densely sericeous;

pappi tan, 4–5.5 mm.

tan to reddish, ellipsoid, 6–10 mm, glabrate or apically sparsely hairy;

pappi off-white to brown, sometimes reddish, 7–9 mm.

= 18.

= 18.