Townsendia jonesii |
Townsendia glabella |
|
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Jones' Townsend daisy, Jones' townsendia |
Gray's Townsend daisy |
|
Habit | Perennials, 1–2(–4) cm (usually ± pulvinate). | Perennials, 1–5 cm (± pulvinate). |
Stems | ± erect; internodes 0.1–1 mm, ± scabrellous to strigose. |
± erect; internodes 0.1–1 mm, strigose. |
Leaves | basal and cauline, blades ± spatulate to oblanceolate, 7–15(–35+) × 1–2(–4+) mm, not fleshy, faces ± scabrellous to strigose. |
basal and cauline, blades spatulate to oblanceolate, 20–60+ × 2–5(–11+) mm, little, if at all, fleshy (margins strigoso-ciliate), usually glabrous, sometimes sparsely strigillose. |
Involucres | ± campanulate, 8–14 mm diam. |
hemispheric or broader, 8–12(–24) mm diam. |
Ray florets | 13–21; corollas white adaxially, laminae 5–7+ mm, ± densely glandular-puberulent abaxially. |
12–34+; corollas usually white, sometimes pink or blue adaxially, laminae 5–10(–14+) mm, glabrous abaxially. |
Disc florets | 40–80+; corollas 4.5–5+ mm. |
50–80+; corollas 3.5–5.5 mm. |
Phyllaries | 20–28 in 3–4+ series, the longer ± lanceolate, 4–8 mm (l/w = 2.5–5), sometimes glabrate, apices acute, abaxial faces usually sparsely strigillose. |
20–28+ in 3–4+ series, the longer ± lanceolate, 5–9 mm (l/w = 3–5), apices acute, abaxial faces glabrous or sparsely strigillose. |
Heads | usually ± sessile, sometimes on scapiform peduncles 5–15+ mm. |
usually on scapiform peduncles 10–20(–70) mm, rarely sessile. |
Cypselae | 2–3(–4+) mm, faces hairy, hair tips glochidiform or forked; pappi persistent; on ray cypselae 20–24 subulate to setiform scales 3–4+ mm; on disc cypselae 20–24 subulate to setiform scales 4–6(–8) mm. |
2–4 mm, faces sparsely hairy (mostly at bases), hair tips glochidiform; pappi persistent; on ray cypselae ± 20 lanceolate to subulate scales 0.5–1.8 mm; on disc cypselae 15–35 subulate to setiform scales (4–)5–7 mm. |
2n | = 18. |
|
Townsendia jonesii |
Townsendia glabella |
|
Phenology | Flowering Apr–Jun. | Flowering May–Aug. |
Habitat | Rocky slopes, limestone slopes with pinyons | Shale slopes with pines |
Elevation | 2100–3000 m (6900–9800 ft) | 2100–2600 m (6900–8500 ft) |
Distribution |
AZ; NV; UT
|
CO
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Discussion | The current circumscription of Townsendia jonesii is, perhaps, too lumpy. Some lumps might be better treated as distinct species and/or included within the circum-scription of T. scapigera. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Of conservation concern. Distinctions between Townsendia glabella and T. rothrockii are subtle. Types of the two names are probably better considered to be conspecific. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 20, p. 202. | FNA vol. 20, p. 203. |
Parent taxa | ||
Sibling taxa | ||
Synonyms | T. mensana var. jonesii | |
Name authority | (Beaman) Reveal: Great Basin Naturalist 30: 35. (1970) | A. Gray: Proc. Amer. Acad. Arts 16: 86. (1881) |
Web links |