Flora of North America species comparison

± erect;

internodes 6–8(–25) mm, ± strigose.

± erect;

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

basal and cauline, blades spatulate to oblanceolate, 15–60(–120+) × 2–6(–10) mm (margins strigoso-ciliate), faces usually glabrous, sometimes sparsely strigillose.

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

hemispheric or broader, (8–)12–25+ mm diam.

± hemispheric, (10–)12–25+ mm diam.

15–55+;

corollas usually blue adaxially, laminae 12–20 mm, glabrous abaxially.

11–40;

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

(60–)100–150+;

corollas (3.5–)4–5+ mm.

100–150+;

corollas 6.5–9(–12+) mm.

(30–)60–80+ in (4–)5–6+ series, the longer ± lanceolate, (7–)12–13+ mm (l/w = 3–5), apices acute to attenuate (most hard, apiculate), abaxial faces sparsely strigillose or glabrous.

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.

at tips of ± leafy stems.

± sessile (usually nestled among rosette leaves).

3–4+ mm, faces ± hairy, hair tips forked or glochidiform;

pappi persistent;

on ray cypselae each a corona 0.1–0.5 mm;

on disc cypselae each of 8–12+ lanceolate scales 0.5–1 mm plus 1–2+ subulate to setiform scales 1–4 mm.

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.