Flora of North America species comparison

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

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

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.

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 usually 0).

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

narrowly campanulate, 8–11 × 7–12 mm.

campanulate, 12.5–15 × 5–9 mm.

0–5;

laminae elliptic, 8–12 × 1.5–3 mm.

0.

4–14;

corollas 7–11 mm.

14–24;

corollas 9.5–10.8 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.

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

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

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

pappi tan to reddish brown, 6–9 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.