Flora of North America species comparison

± erect;

internodes 0.1–1 mm, ± villous.

± erect;

internodes 0.1–1 mm, ± hirsute to strigose or glabrate.

basal and cauline, ± spatulate to oblanceolate, 3–8(–18) × 1–2.5 mm (not fleshy), faces ± villous.

basal and cauline, blades ± spatulate to narrowly oblanceolate or linear, 12–40(–75) × 2–6+ mm, not fleshy, faces ± strigillose.

± campanulate, 4–8 mm diam.

± hemispheric, (10–)12–25+ mm diam.

13–17;

corollas white adaxially, laminae 5–8 mm, glabrous abaxially.

11–40;

corollas white adaxially, laminae (9–)12–18+ mm, glabrous abaxially.

number unknown;

corollas 4 mm.

100–150+;

corollas 6.5–9(–12+) mm.

ca. 26 in 3–4 series, the longer ± lanceolate, 5–8 mm (l/w = 3–5), apices acute, abaxial faces ± strigose to villous.

30–45(–60) in 4–6+ series, the longer narrowly lanceolate or linear to subulate, (10–)12–14(–17) mm (l/w = 6–9), apices obtuse to acute, abaxial faces sparsely strigillose or glabrate.

± sessile.

± sessile (usually nestled among rosette leaves).

3–4 mm, faces glabrous or glabrate;

pappi readily falling, of 15–20 subulate to setiform scales 3–5 mm (± connate basally).

4(–6+) mm, faces hairy, hair tips glochidiform;

pappi persistent;

on ray cypselae 20–30 setiform scales 6–8+ mm;

on disc cypselae 20–30+ setiform scales 6.5–11+ mm.

= 18.