Flora of North America species comparison

erect to ascending, green when young, soon reddish to brownish, branched, glabrous or tomentose, stipitate-glandular.

erect to ascending or divergent, much branched, sparsely hairy (hairs low, conic), resinous.

mostly erect or ascending;

blades spatulate (flat), 15–30 × 3–7 mm, midnerves (and sometimes 2 fainter, collateral nerves) evident (slightly raised abaxially), apices obtuse, mucronate, faces glabrous or tomentose and/or stipitate-glandular;

axillary fascicles absent.

ascending to spreading, distally recurved;

blades narrowly obovate (sometimes conduplicate), 6–12 × 2–4 mm, midnerves raised adaxially, (margins often undulate) apices acute, mucronate to cuspidate, faces gland-dotted to resinous;

sometimes with axillary fascicles of 1–7 leaves.

usually less than 20, rarely to 100 mm (leafy).

1–15 mm (bracts 0 or 1–4, scalelike).

broadly campanulate, 8–12 × 12–15 mm.

narrowly campanulate, 8–12 × 4–6 mm.

(0–)1–7;

laminae 7–10 × 1.5–2.8 mm.

4–7;

laminae (white) 4–5.5 × 1–2 mm.

7–20;

corollas 8–9.5 mm.

10–18;

corollas (white) 5.5–7 mm.

18–28 in 2–3 series, green to tan, lanceolate to elliptic, 10–14 × 1.3–2.7 mm, subequal (outer sometimes slightly longer than inner), outer herbaceous or with herbaceous appendages, inner mostly chartaceous, midnerves (and often 2 collateral nerves) evident, (margins often narrowly membranous, fimbriate or tomentose) apices acute, acuminate to cuspidate, abaxial faces stipitate-glandular.

22–28 in 4–6 series, green to tan, squarrose or reflexed (outer), ovate to oblong, 2.5–7 × 0.6–1.5 mm, unequal, outer herbaceous or herbaceous-cuspidate, innermost chartaceous (bodies usually apically obtuse to retuse proximal to appendages), midnerves and subapical resin ducts darker, apices acute to acuminate, abaxial faces glabrous, resinous.

(12–22) usually in (leafy) congested, cymiform or racemiform arrays, rarely borne singly.

usually borne singly, sometimes in cymiform to racemiform arrays (4–6 cm wide).

tan to reddish, ellipsoid, 5–7 mm, glabrous or distally hairy;

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

tan to brown, narrowly turbinate, 3.5–4 mm (5-ribbed), densely pilose, sericeous to villous;

pappi whitish, 5–6.5 mm.

= 18.

= 18.