Townsendia incana |
Townsendia fendleri |
|
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hoary Townsend daisy, hoary townsendia, silvery townsendia |
Fendler's Townsend daisy |
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Habit | Perennials, (1–)2–8(–12+) cm. | Perennials, 3–12(–25+) cm. |
Stems | decumbent to erect; internodes (0.5–)2–6(–12+) mm, usually densely piloso-hirsute, sometimes strigoso-scabrellous (surfaces usually hidden by hairs). |
decumbent to erect; internodes 5–10(–20+) mm, pilose to strigose (surfaces seldom hidden by hairs). |
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 narrowly oblanceolate to linear, 6–20(–35) × 1–2(–3.5) mm, not fleshy, faces piloso-strigose to strigose. |
Involucres | ± campanulate to hemispheric, (6–)10–15(–20) mm diam. |
± campanulate to hemispheric, (5–)7–13 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. |
10–25+; corollas white or pinkish adaxially, laminae 5–10 mm, usually glabrous, sometimes glandular-puberulent abaxially. |
Disc florets | 60–80+; corollas 4.5–6.5+ mm. |
(20–)40–80; corollas 2–3.5+ 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. |
22–40+ in 4–5 series, the longer ± lance-ovate to lanceolate, 5–8 mm (l/w = 2.5–5), apices acute, abaxial faces strigose. |
Heads | at tips of stems (usually surpassed by leaves). |
at tips of stems (usually surpassed by leaves). |
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+ mm, faces hairy, hair tips glochidiform; pappi persistent; on ray cypselae 12–20(–30) lanceolate to subulate scales 0.2–0.5(–1.5) mm; on disc cypselae 15–25+ subulate to setiform scales 2.5–3+ mm. |
2n | = 18. |
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Townsendia incana |
Townsendia fendleri |
|
Phenology | Flowering Apr–Jul. | Flowering Jun–Aug. |
Habitat | Sandy soils, rocky benches, shales, with pinyons and junipers | Sandy or rocky soils, desert scrub, pinyon/juniper woodlands |
Elevation | 1100–2200 m (3600–7200 ft) | 1200–2400 m (3900–7900 ft) |
Distribution |
AZ; CO; MT; NM; NV; UT; WY
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CO; NM
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Discussion | Of conservation concern. Upon naming Townsendia fendleri, Gray stated that it “most resembles” T. fremontii Torrey & A. Gray (i.e., T. incana). I feel that the affinity of T. fendleri may be closer to T. strigosa than to T. incana. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
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Source | FNA vol. 20, p. 199. | FNA vol. 20, p. 199. |
Parent taxa | ||
Sibling taxa | ||
Synonyms | T. arizonica | |
Name authority | Nuttall: Trans. Amer. Philos. Soc., n. s. 7: 305. (1840) | A. Gray: Mem. Amer. Acad. Arts, n. s. 4: 70. (1849) |
Web links |