Flora of North America species comparison

green to reddish brown when young, branched, glabrous or sparsely hairy (sometimes tomentulose), often gland-dotted (sessile).

erect to spreading, green when young, becoming reddish brown, intricately branched, glabrous or sparsely hairy, sometimes resinous.

ascending to spreading;

blades filiform to narrowly oblong (adaxially flat to sulcate), 20–70 × 0.5–4 mm, midnerves evident abaxially, apices acute, sometimes mucronate, faces glabrous or sparsely hairy, often gland-dotted (sessile) and appearing pustular;

axillary leaf fascicles sometimes present.

ascending to spreading;

blades linear (slightly concave), usually recurved, 5–15 × 0.5–1.5 mm, midnerves evident abaxially, apices acute, usually mucronate, faces glabrous or sparsely hairy, gland-dotted (not in deep pits), ± resinous;

axillary fascicles of 4–7 leaves usually present.

3–15 mm (bracts usually 0).

1–10 mm (glabrous or with conic hairs, resinous).

narrowly campanulate, 8–11 × 7–12 mm.

subcylindric, 10–15 × 3–7 mm.

0–5;

laminae elliptic, 8–12 × 1.5–3 mm.

0.

4–14;

corollas 7–11 mm.

5–6;

corollas 9–10.5 mm.

17–36 in 3–6 series, green to tan, ovate to linear-lanceolate, 3.5–11 × 0.8–2 mm, subequal, herbaceous or herbaceous-tipped, mid and inner chartaceous, midnerves evident at least on distal 1/2, (margins ciliate) apices acute to acuminate or cuspidate, abaxial faces glabrous or hairy, sometimes gland-dotted, resinous.

18–30 in 5–7 series, tan, ovate to elliptic, 2–12 × 1–2.5 mm, unequal, mostly chartaceous, occasionally herbaceous-tipped (mid bodies apically obtuse to truncate), appendages usually herbaceous, often spreading to recurved, midnerves faint, (margins membranous, fimbriate distally, otherwise sometimes ciliolate) apices acute to cuspidate, abaxial faces mostly resinous.

in (leafy) racemiform to narrowly paniculiform arrays (2–15 cm).

borne singly or (2–7) in cymiform arrays (clusters 3–20 mm).

tan to reddish brown, narrowly elliptic, 6–10 mm, glabrous or apically villous;

pappi tan to reddish brown, 6–9 mm.

tan to brown, turbinate to narrowly oblanceolate, 5–7 mm (ribs 5–7), moderately hairy distally;

pappi off-white to brown, 9–10.5 mm.

= 18.