Townsendia smithii |
Townsendia leptotes |
|
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Black Rock Townsend daisy |
common Townsend daisy, common townsendia, slender townsendia |
|
Habit | Perennials, 3–8(–12+) cm (usually ± pulvinate). | Perennials, 1–3 cm (± pulvinate). |
Stems | ± erect; internodes 0.1–1 mm, ± scabrellous. |
± erect; internodes 0.1–1 mm, strigose. |
Leaves | basal and cauline, ± spatulate to oblanceolate, 15–50(–80) × 2–6(–11) mm, little, if at all, fleshy, faces ± scabrellous. |
basal and cauline, blades spatulate to narrowly obovate, (8–)12–25(–40+) × 1–2(–3+) mm, ± fleshy, faces ± strigose to strigillose or glabrate. |
Involucres | ± hemispheric to campanulate, 10–15 mm diam. |
± campanulate, 8–12(–20+) mm diam. |
Ray florets | 12–21; corollas white adaxially, laminae 6–12+ mm, glabrous abaxially. |
13–34+; corollas usually white or pinkish, seldom blue, adaxially, laminae 5–7(–12+) mm, abaxially usually glabrous, sometimes sparsely glandular-puberulent. |
Disc florets | 60–80+; corollas 3.5–5 mm. |
40–80+; corollas 4–6+ mm. |
Phyllaries | 14–26 in 2–3+ series, the longer lance-ovate to lanceolate, 9–11 mm (l/w = 3–5), apices attenuate, abaxial faces piloso-strigose to strigose. |
40–50+ in 4–5+ series, the longer ± lanceolate, 7–9(–12) mm (l/w = 2.5–5), apices acute to attenuate, abaxial faces sparsely strigose or glabrous. |
Heads | on scapiform peduncles 30–80(–120) mm. |
usually ± sessile, rarely on scapiform peduncles 5–15+ mm. |
Cypselae | 2.5–3.5 mm, faces hairy, hair tips entire; pappi persistent, 16–20+ lanceolate to subulate scales 0.2–0.8 mm (± connate). |
3+ mm, faces glabrous or sparsely hairy (hairs mostly at bases), hair tips glochidiform; pappi persistent; on ray cypselae ca. 25 lanceolate or subulate to setiform scales 0–1 or 5–8 mm; on disc cypselae ca. 30 subulate to setiform scales 5–8 mm. |
2n | = 18. |
= 18. |
Townsendia smithii |
Townsendia leptotes |
|
Phenology | Flowering May. | Flowering Jun–Jul. |
Habitat | Volcanic soils, pinyon or yellow pines | Rocky ridges, sandy slopes |
Elevation | 2000–2400 m (6600–7900 ft) | (2300–)2900–3800 m ((7500–)9500–12500 ft) |
Distribution |
AZ |
CA; CO; ID; MT; NM; NV; UT; WY
|
Discussion | Of conservation concern. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
|
Source | FNA vol. 20, p. 202. | FNA vol. 20, p. 203. |
Parent taxa | ||
Sibling taxa | ||
Synonyms | T. sericea var. leptotes | |
Name authority | L. M. Shultz & A. H. Holmgren: Brittonia 32: 144, fig. 1. (1980) | (A. Gray) Osterhout: Muhlenbergia 4: 69. (1908) |
Web links |