Townsendia incana |
Townsendia jonesii |
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hoary Townsend daisy, hoary townsendia, silvery townsendia |
Jones' Townsend daisy, Jones' townsendia |
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Habit | Perennials, (1–)2–8(–12+) cm. | Perennials, 1–2(–4) cm (usually ± pulvinate). |
Stems | decumbent to erect; internodes (0.5–)2–6(–12+) mm, usually densely piloso-hirsute, sometimes strigoso-scabrellous (surfaces usually hidden by hairs). |
± erect; internodes 0.1–1 mm, ± scabrellous to strigose. |
Leaves | 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, 7–15(–35+) × 1–2(–4+) mm, not fleshy, faces ± scabrellous to strigose. |
Involucres | ± campanulate to hemispheric, (6–)10–15(–20) mm diam. |
± campanulate, 8–14 mm diam. |
Ray florets | (8–)13–34+; corollas white or pinkish adaxially, laminae 5–8(–12+) mm, abaxially usually glabrous, sometimes glandular-puberulent at bases. |
13–21; corollas white adaxially, laminae 5–7+ mm, ± densely glandular-puberulent abaxially. |
Disc florets | 60–80+; corollas 4.5–6.5+ mm. |
40–80+; corollas 4.5–5+ mm. |
Phyllaries | 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. |
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. |
Heads | at tips of stems (usually surpassed by leaves). |
usually ± sessile, sometimes on scapiform peduncles 5–15+ mm. |
Cypselae | 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. |
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. |
2n | = 18. |
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Townsendia incana |
Townsendia jonesii |
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Phenology | Flowering Apr–Jul. | Flowering Apr–Jun. |
Habitat | Sandy soils, rocky benches, shales, with pinyons and junipers | Rocky slopes, limestone slopes with pinyons |
Elevation | 1100–2200 m (3600–7200 ft) | 2100–3000 m (6900–9800 ft) |
Distribution |
AZ; CO; MT; NM; NV; UT; WY
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AZ; NV; UT
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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.) |
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Source | FNA vol. 20, p. 199. | FNA vol. 20, p. 202. |
Parent taxa | ||
Sibling taxa | ||
Synonyms | T. arizonica | T. mensana var. jonesii |
Name authority | Nuttall: Trans. Amer. Philos. Soc., n. s. 7: 305. (1840) | (Beaman) Reveal: Great Basin Naturalist 30: 35. (1970) |
Web links |