Townsendia florifera |
Townsendia hookeri |
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Hooker's Townsend daisy, Hooker's townsendia |
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Habit | Biennials (perhaps flowering first year, sometimes persisting), 3–12(–15+) cm. | Perennials, 1–3 cm (± pulvinate). |
Stems | decumbent to erect; internodes 3–12(–15+) mm, piloso-strigose. |
± erect; internodes 0.1–1 mm, ± strigose. |
Leaves | basal and cauline, blades spatulate to linear, 10–25(–50+) × 2–3(–8+) mm, not fleshy, faces ± strigose. |
basal and cauline, blades narrowly oblanceolate to linear, 5–25(–40+) × 1–1.5(–3) mm, fleshy, faces ± strigoso-sericeous, little, if at all. |
Involucres | ± hemispheric or broader, 16–20(–30) mm diam. |
± campanulate, 8–18+ mm diam. |
Ray florets | 13–34+; corollas white or pinkish adaxially, laminae (8–)10–18+ mm, abaxially usually glandular-puberulent, rarely glabrous. |
15–35; corollas white adaxially, laminae 8–12+ mm, glabrous abaxially. |
Disc florets | (80–)100–150+; corollas (4–)5.5–6+ mm. |
120–180+; corollas 4–5(–6+) mm. |
Phyllaries | 24–30+ in 3–4+ series, the longer ± lanceolate, (6–)9–11+ mm (l/w = 2.5–5), apices acute, abaxial faces strigose. |
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. |
Heads | at tips of stems. |
± sessile. |
Cypselae | (3.5–)4–5+ mm, faces hairy, hair tips entire or forked; pappi persistent; on ray cypselae 20–30 subulate to setiform scales 2–6 mm; on disc cypselae 20–30+ subulate to setiform scales (4–)5–7+ mm. |
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. |
2n | = 18. |
= 18. |
Townsendia florifera |
Townsendia hookeri |
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Phenology | Flowering Apr–Jun(–Aug). | Flowering Mar–Jun. |
Habitat | Gravelly flats with junipers and sagebrush | Gravelly benches, sandy slopes |
Elevation | 400–2300 m (1300–7500 ft) | 700–1800 m (2300–5900 ft) |
Distribution |
ID; MT; NV; OR; UT; WA; WY |
AK; CO; ID; MT; ND; NE; SD; UT; WY; AB; BC; SK; YT
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Discussion | J. H. Beaman (1957) considered plants intermediate between Townsendia florifera and T. parryi to be hybrids. Such intermediates occur in Montana (e.g., Jones in 1905 from Gallatin Co. and Suksdorf 282 from Park Co.), outside the known distribution of T. florifera. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
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Source | FNA vol. 20, p. 198. | FNA vol. 20, p. 200. |
Parent taxa | ||
Sibling taxa | ||
Synonyms | Erigeron florifer, T. florifera var. watsonii | T. nuttallii |
Name authority | (Hooker) A. Gray: Proc. Amer. Acad. Arts 16: 84. (1880) | Beaman: Contr. Gray Herb. 183: 95, plates 17, 20, figs. 5, 6. (1957) |
Web links |