Flora of North America species comparison

1–10+, ascending to erect, proximally glabrous, strigose in arrays.

1–5+, erect, puberulent.

basal and proximal cauline petiolate, blades narrowly oblanceolate, (20–)50–100(–160) × (2–)5–16(–56) mm, margins serrate to crenate, apices acute to obtuse, glabrous;

mid and distal sessile, similar, blades lanceolate to linear, 12–45 × 2–19 mm, reduced distally, margins entire to sparsely serrate, sometimes resinous.

basal and proximal cauline tapering to long petioles, blades oblanceolate to obovate, 50–150 × 10–50 mm, margins serrate, apices acute, faces puberulent;

mid to distal cauline sessile, blades lanceolate to linear-elliptic, 10–50 × 3–10 mm, reduced distally, margins becoming entire, apices acute.

3.1–10.3 mm, glabrate to sparsely strigillose;

bracteoles few, linear.

1.5–3 mm.

campanulate, 3–7 mm.

campanulate, 3–5 mm.

7–16;

laminae 2–5 × 0.7–0.9 mm.

9–16 (orange-yellow);

laminae 3.5–4.2 × 0.4–0.6 mm.

6–31;

corollas 4–4.9 mm, lobes 0.6–1.3(–2) mm.

(6–)10–15;

corollas 2.8–3 mm, lobes 0.5–0.8 mm.

(in 3–4 series) strongly unequal, often resinous;

outer ovate, acute, inner linear-oblong, obtuse.

in 3–4 series, appressed, unequal, linear, attenuate, puberulent.

3–150, not secund, in narrowly elongate, paniculiform arrays, broadly so in robust plants (12.5–19 × 2.5–3 cm wide), consisting of short axillary and terminal racemiform clusters, proximal branches elongate in larger plants, branches glabrate to strigillose.

15–250, not secund, in elongate, paniculiform arrays, lateral racemiform clusters short and ascending, sometimes lateral branches elongated and sharply ascending.

narrowly obconic, 1.9–3.2 mm, sometimes with dark ridges, strigillose;

pappi 1.9–5.2 mm (bristles sometimes clavate).

0.8–1.3 mm, glabrous or sparsely strigose;

pappi 2.2–2.6 mm.