Flora of North America species comparison

1–20(–50+), stout, finely puberulent or scabrous-puberulent at least distally.

usually 1, erect, glabrous, sparsely hairy in arrays.

basal absent at flowering;

cauline sessile to short-petiolate;

blades usually lanceolate-elliptic or ovate, sometimes linear-lanceolate, 30–150 × 5–30 mm, thick and firm, margins entire or few toothed, somewhat to much reduced distally, abaxial faces sometimes resinous and shiny, glabrous or strigillose (hairs mostly 0.1–1.4 mm), adaxial glabrous or scabrous.

basal when present similar to proximal cauline;

proximal cauline often withering by flowering, tapering (sometimes rather abruptly) to short, winged petioles, blades ovate-lanceolate, 60–100(–150) × 30–40(–50) mm, thin, margins coarsely serrate, apices acute, abaxial faces hirsute on main nerves, adaxial sparsely hirsute to somewhat scabrous;

mid to distal cauline subsessile to sessile, blades lanceolate, 20–50 × 5–20 mm, gradually reduced distally, margins entire.

mostly 2–15 mm, bracteolate, sparsely to densely short hispid-strigose.

1.7–2 mm, sparsely to moderately short hispido-strigose, bracteoles 2–7, ovate, grading into phyllaries.

campanulate, 4.5–7.5 mm.

3–4 mm.

(5–)7–9;

laminae 3–7 × 1–2 mm.

3–6;

laminae 1–2 × 0.5–1 mm.

(8–)10–16;

corollas 4–5 mm, lobes ca. 1–2 mm.

4–7;

corollas 2.7–3 mm, lobes 0.5–1.1 mm.

in 3–4 series, unequal, linear-lanceolate, acute to attenuate, ± squarrose-tipped, glabrous or moderately strigose, sparsely to moderately stipitate-glandular, sometimes viscid.

(16–18) in 2–3 series, unequal;

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

10–190+ in paniculiform (rarely racemiform) arrays, usually elongate, usually leafy-bracteate, bracts similar to distal leaves but reduced;

branches stiffly ascending, not secund, sometimes elongate.

20–150, secund, in open paniculiform arrays, proximal branches elongate and widely divergent, sometimes pyramidal-secund with proximal branches short and recurved-secund.

3–4 mm, glabrous or glabrate;

pappi ca. 4 mm.

1–1.6 mm, finely hairy;

pappi ± 2.5 mm.

= 18, 36, 54.