Flora of North America species comparison

± erect;

internodes 0.1–1 mm, ± villous.

± erect;

internodes (0.1–)2–25(–50) mm, strigose.

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

basal and cauline, blades spatulate to oblanceolate or linear, 20–40(–90+) × 1–5(–10) mm, not fleshy (margins strigoso-ciliate), faces usually glabrous, sometimes sparsely strigillose (midribs scabrous).

± campanulate, 4–8 mm diam.

hemispheric, (8–)10–14+ mm diam.

13–17;

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

20–40;

corollas usually white adaxially, laminae 7–15(–20+) mm, glabrous abaxially.

number unknown;

corollas 4 mm.

(60–)80–120+;

corollas 4–6 mm.

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

30–40+ in 4–5+ series, the longer lance-ovate to lanceolate, 8–10(–12+) mm (l/w = 3–5), apices acute to attenuate (most hard, apiculate), abaxial faces sparsely strigillose or glabrous.

± sessile.

at tips of stems (usually surpassed by leaves).

3–4 mm, faces glabrous or glabrate;

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

3.5–4+ mm, faces hairy, hair tips forked or glochidiform;

pappi persistent;

on ray cypselae each a corona 0.1–0.5 mm or 10–20 subulate scales 1–2.5 mm;

on disc cypselae 15–30 subulate to setiform scales (4–)5–6 mm.

= 18.