Townsendia eximia |
Townsendia rothrockii |
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tall Townsend daisy, tall townsendia |
Rothrock's Townsend daisy, Rothrock's townsendia |
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Habit | Biennials or perennials, 6–15(–30+) cm (sometimes rhizomatous). | Perennials, 1–3 cm (± pulvinate). |
Stems | ± erect; internodes 6–8(–25) mm, ± strigose. |
± erect; internodes 0.1–1+ mm, glabrous or ± strigose. |
Leaves | basal and cauline, blades spatulate to oblanceolate, 15–60(–120+) × 2–6(–10) mm (margins strigoso-ciliate), faces usually glabrous, sometimes sparsely strigillose. |
basal and cauline, ± spatulate to oblanceolate, 10–35 × 2–7 mm, ± fleshy, faces sparsely strigose or glabrous. |
Involucres | hemispheric or broader, (8–)12–25+ mm diam. |
± hemispheric, 12–28+ mm diam. |
Ray florets | 15–55+; corollas usually blue adaxially, laminae 12–20 mm, glabrous abaxially. |
18–40; corollas blue to purplish adaxially, laminae 8–16 mm, glabrous abaxially. |
Disc florets | (60–)100–150+; corollas (3.5–)4–5+ mm. |
60–100+; corollas 3.5–4.5+ mm. |
Phyllaries | (30–)60–80+ in (4–)5–6+ series, the longer ± lanceolate, (7–)12–13+ mm (l/w = 3–5), apices acute to attenuate (most hard, apiculate), abaxial faces sparsely strigillose or glabrous. |
40–60+ in (3–)4–5+ series, the longer obovate to oblanceolate, 7–9+ mm (l/w = 2.5–5), apices obtuse to acute, abaxial faces glabrous. |
Heads | at tips of ± leafy stems. |
± sessile or on peduncles 5–25+ mm. |
Cypselae | 3–4+ mm, faces ± hairy, hair tips forked or glochidiform; pappi persistent; on ray cypselae each a corona 0.1–0.5 mm; on disc cypselae each of 8–12+ lanceolate scales 0.5–1 mm plus 1–2+ subulate to setiform scales 1–4 mm. |
4 mm, faces nearly glabrous (discs) or sparsely hairy (ray, hairs mostly at bases), hair tips glochidiform; pappi persistent; on ray cypselae 12–20 lanceolate to subulate scales 0.5–1.5 mm; on disc cypselae 15–30 subulate to setiform scales 3–6 mm. |
2n | = 36 (apomicts). |
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Townsendia eximia |
Townsendia rothrockii |
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Phenology | Flowering (May–)Jul–Aug(–Oct). | Flowering Aug. |
Habitat | Gravelly banks, canyon walls, with junipers, pinyons, and yellow pines | South slopes |
Elevation | (1900–)2100–2500(–3300) m ((6200–)6900–8200(–10800) ft) | 3600–4000 m (11800–13100 ft) |
Distribution |
CO; NM
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CO
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Discussion | Of conservation concern. The types of Townsendia rothrockii and T. glabella may be conspecific. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
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Source | FNA vol. 20, p. 197. | FNA vol. 20, p. 202. |
Parent taxa | Asteraceae > tribe Astereae > Townsendia | Asteraceae > tribe Astereae > Townsendia |
Sibling taxa | ||
Name authority | A. Gray: Mem. Amer. Acad. Arts, n. s. 4: 70. (1849) | A. Gray ex Rothrock: Rep. U.S. Geogr. Surv., Wheeler 6: 148. (1879) |
Web links |