Flora of North America species comparison

1–5+, sparsely to moderately short strigose or villous.

1–15+, decumbent to erect, proximally glabrous, sparsely strigose in array.

basal withering by flowering, petiolate, smaller to much smaller than cauline, blades oblanceolate, margins serrate;

cauline sessile, blades elliptic-lanceolate or -oblanceolate, mid 80–140 × 2.5–4 mm, distally reduced, usually membranous, bases tapering, attenuate, margins sharply toothed along much of length to nearly entire, ciliate, abaxial faces short-pilose along small and large nerves, adaxial short-pilose along larger nerves.

basal petiolate to sessile;

blades spatulate, 40–120 × 10–30 mm, subcoriaceous, margins crenate, apices acute to obtuse, glabrous;

many-leaved rosettes present at flowering;

cauline 9–19, sessile;

blades similar to basal proximally, becoming oblanceolate distally, reduced to 10 mm, margins entire, apices acute, often heavily resinous.

1–6 mm, moderately canescent;

bracteoles linear to lanceolate.

3–10 mm (longest), sparsely strigose;

bracts clustered near base of heads.

campanulate, 4.5–5.5 mm.

campanulate, 4–7 mm.

6–8;

laminae 3–4 × 1–1.5 mm wide.

4–10;

laminae 2–4 × 1–2 mm.

8–14;

corollas 4–5 mm, lobes ca. 1.5 mm.

10–18;

corollas 4.3–6 mm, lobes 0.7–1.5 mm.

in ca. 3 series, strongly unequal, erect to slightly squarrose-tipped, lanceolate, apices acute, glabrate, sparsely to moderately, finely stipitate-glandular.

(15–24 in 3–4 series) unequal, very resinous;

outer ovate, obtuse, inner linear-lanceolate, obtuse or acute.

5–160 (2–10+ more per short branch cluster), in narrowly elongate paniculiform arrays, branches usually 1–6 cm (much longer in damaged plants, sometimes 1–3 proximal branches much elongated in undamaged plants), ascending and bearing short terminal racemiform or paniculiform clusters.

5–100+, not secund, in paniculiform arrays, or virgate to thyrsiform in robust plants, consisting of axillary and terminal racemiform clusters.

(reddish brown) 2–3 mm, glabrous;

pappi 4–5 mm.

appressed-strigose;

pappi 3.5–5.5 mm.

= 18.