Flora of North America species comparison

usually 1, erect, green to brown distally, simple, slender, proximally silky-sericeous, distal 2/3 sometimes densely stipitate-glandular.

1–6, ascending, sometimes reddish brown, usually simple, flexuous, slender, moderately sericeous, glabrescent.

basal overwintering, in rosettes (at ends of short rhizomes), ascending to spreading, blades linear-oblanceolate, 50–250(–350) × 5–10 mm, margins sometimes stipitate-glandular, apices acute, faces sparsely to densely silky-sericeous;

cauline ascending, linear, greatly reduced distally, margins sparsely to densely stipitate-glandular, sparsely sericeous, glabrescent, or densely stipitate-glandular;

proximal 30–120 × 2–10 mm, distal 20–50 × 1–3 mm, sometimes glabrate.

basal equaling or shorter than cauline, persistent through winter, withering by flowering;

cauline spreading to ascending, sessile, blades linear-lanceolate, 30–70 × 3–7 mm, apices acute, faces moderately sericeous, glabrescent;

distal slightly reduced.

1–7, 1–6 cm, densely stipitate-glandular, glabrescent;

bracteoles linear, stipitate-glandular.

sparsely bracteolate, 1–11 cm, tomentose, sparsely, minutely glandular;

bracteoles reduced distally.

turbinate, 4.5–8 mm (shorter than mature pappi).

narrowly campanulate, (7–)8–11 mm (equaling pappi).

6–10;

laminae 4–6 mm.

9–13;

laminae 5–8 mm.

15–45;

corollas 4–5.5 mm, proximal throats glabrate to sparsely short-pilose, lobes 0.5 mm, glabrous to sparsely pilose.

25–45;

corollas 5.5–7 mm, tubes and proximal throats sparsely puberulent, lobes 0.5 mm, glabrous or glabrate.

in 5–7 series, margins fimbriate, sparsely piloso-ciliate, moderately so distally (green zones in distal 1/2), apices acute, sometimes long piloso-ciliate distally, faces moderately stipitate-glandular.

in 4–6 series, margins hyaline, sometimes reddish distally, fimbriate (midnerves pronounced), apices acute, faces sparsely pilose, eglandular or sparsely, minutely stipitate-glandular.

(4–)10–79, in corymbiform arrays.

3–20 per stem, in corymbiform arrays.

fusiform, 2–3 mm, ribbed, faces strigose;

pappi: outer of linear to linear-triangular scales 0.5–1 mm, inner of 25–35 bristles 5–6 mm.

fusiform, 3–4 mm, ribbed (dark between ribs), faces sparsely strigose;

pappi: outer of linear scales 0.3–1 mm, inner of 30–50 bristles 5.5–7 mm.

= 18.