Townsendia hookeri |
Townsendia fendleri |
|
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Hooker's Townsend daisy, Hooker's townsendia |
Fendler's Townsend daisy |
|
Habit | Perennials, 1–3 cm (± pulvinate). | Perennials, 3–12(–25+) cm. |
Stems | ± erect; internodes 0.1–1 mm, ± strigose. |
decumbent to erect; internodes 5–10(–20+) mm, pilose to strigose (surfaces seldom hidden by hairs). |
Leaves | basal and cauline, blades narrowly oblanceolate to linear, 5–25(–40+) × 1–1.5(–3) mm, fleshy, faces ± strigoso-sericeous, little, if at all. |
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, 8–18+ mm diam. |
± campanulate to hemispheric, (5–)7–13 mm diam. |
Ray florets | 15–35; corollas white adaxially, laminae 8–12+ mm, glabrous abaxially. |
10–25+; corollas white or pinkish adaxially, laminae 5–10 mm, usually glabrous, sometimes glandular-puberulent abaxially. |
Disc florets | 120–180+; corollas 4–5(–6+) mm. |
(20–)40–80; corollas 2–3.5+ mm. |
Phyllaries | 50–65+ in 5+ series, the longer ± lance-linear, 7–11(–13) mm (l/w = 6–9), apices attenuate, abaxial faces sparsely strigose or glabrate. |
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 | ± sessile. |
at tips of stems (usually surpassed by leaves). |
Cypselae | 3.5–4.5 mm, faces hairy, hair tips glochidiform; pappi persistent; on ray cypselae ca. 30 subulate to setiform scales (1–)5–7 mm; on disc cypselae ca. 30 subulate to setiform scales 5.5–7.5+ 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. |
|
Townsendia hookeri |
Townsendia fendleri |
|
Phenology | Flowering Mar–Jun. | Flowering Jun–Aug. |
Habitat | Gravelly benches, sandy slopes | Sandy or rocky soils, desert scrub, pinyon/juniper woodlands |
Elevation | 700–1800 m (2300–5900 ft) | 1200–2400 m (3900–7900 ft) |
Distribution |
AK; CO; ID; MT; ND; NE; SD; UT; WY; AB; BC; SK; YT
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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.) |
|
Source | FNA vol. 20, p. 200. | FNA vol. 20, p. 199. |
Parent taxa | Asteraceae > tribe Astereae > Townsendia | Asteraceae > tribe Astereae > Townsendia |
Sibling taxa | ||
Synonyms | T. nuttallii | |
Name authority | Beaman: Contr. Gray Herb. 183: 95, plates 17, 20, figs. 5, 6. (1957) | A. Gray: Mem. Amer. Acad. Arts, n. s. 4: 70. (1849) |
Web links |