Flora of North America species comparison

decumbent to erect;

internodes (0.5–)2–6(–12+) mm, usually densely piloso-hirsute, sometimes strigoso-scabrellous (surfaces usually hidden by hairs).

± erect;

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

basal and cauline, blades spatulate to narrowly oblanceolate, 3–12(–40+) × 1–2(–4+) mm, not fleshy, ± strigoso-scabrellous to strigillose.

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 to hemispheric, (6–)10–15(–20) mm diam.

hemispheric, (8–)10–14+ mm diam.

(8–)13–34+;

corollas white or pinkish adaxially, laminae 5–8(–12+) mm, abaxially usually glabrous, sometimes glandular-puberulent at bases.

20–40;

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

60–80+;

corollas 4.5–6.5+ mm.

(60–)80–120+;

corollas 4–6 mm.

16–28+ in 3–4+ series, the longer ± lance-ovate to lanceolate, (6–)8–9(–12+) mm (l/w = 2.5–5), apices acute, abaxial faces strigose.

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.

at tips of stems (usually surpassed by leaves).

at tips of stems (usually surpassed by leaves).

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

pappi persistent;

on ray cypselae 15–30 lanceolate or subulate to setiform scales 0.3–0.6 or 4–6+ mm;

on disc cypselae 15–30+ subulate to setiform scales 4–6+ 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.