Flora of North America species comparison

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

erect to spreading, green when young, fastigiately branched, glabrous, 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.

usually ascending or spreading;

blades filiform to narrowly oblanceolate (terete or flattened, adaxially sulcate to concave), 12–55 × 0.5–3 mm, midnerves evident, usually not raised, apices acute to acuminate, faces glabrous or sparsely hairy, gland-dotted (in circular, deep pits), resinous;

axillary fascicles of 2–15 leaves, shorter than subtending leaves.

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

20–70 mm (mostly ebracteate).

broadly campanulate, 8–12 × 12–15 mm.

hemispheric, 8–14 × 8–18 mm.

(0–)1–7;

laminae 7–10 × 1.5–2.8 mm.

3–18;

laminae elliptic to lanceolate, 7–15 × 2–5 mm.

7–20;

corollas 8–9.5 mm.

16–60;

corollas 6–10 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.

24–32 in 2–3 series, green to tan, ovate to lanceolate, 4–10 × 0.5–3 mm, subequal, outer sometimes wholly herbaceous, usually mostly chartaceous, sometimes with green, medial stripes, midnerves conspicuous, raised, 1–2 collateral nerves often present, (margins membranous, minutely lacerate to fimbriate) apices acute to acuminate, abaxial faces usually glabrous, sometimes sparsely hairy, often stipitate-glandular, resinous.

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

usually borne singly.

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

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

tan to brown, narrowly oblanceoloid, somewhat flattened, 4–5 mm (2-ribbed), sericeous to villous;

pappi silvery, 5.8–7 mm.

= 18.

= 18.