Flora of North America species comparison

± erect;

internodes 0.1–1 mm, ± strigose.

± erect;

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

basal and cauline, blades narrowly oblanceolate to linear, 5–25(–40+) × 1–1.5(–3) mm, fleshy, faces ± strigoso-sericeous, little, if at all.

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, 8–18+ mm diam.

hemispheric, (8–)10–14+ mm diam.

15–35;

corollas white adaxially, laminae 8–12+ mm, glabrous abaxially.

20–40;

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

120–180+;

corollas 4–5(–6+) mm.

(60–)80–120+;

corollas 4–6 mm.

50–65+ in 5+ series, the longer ± lance-linear, 7–11(–13) mm (l/w = 6–9), apices attenuate, abaxial faces sparsely strigose or glabrate.

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).

3.5–4.5 mm, faces hairy, hair tips glochidiform;

pappi persistent;

on ray cypselae ca. 30 subulate to setiform scales (1–)5–7 mm;

on disc cypselae ca. 30 subulate to setiform scales 5.5–7.5+ mm.

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.

= 18.