Townsendia minima |
Townsendia exscapa |
|
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Wyoming Townsend daisy |
Easter daisy, stemless Townsend daisy |
|
Habit | Perennials, 1–2+ cm (± pulvinate). | Perennials, 1–3 cm (± pulvinate). |
Stems | ± erect; internodes 0.1–1+ mm, ± strigose. |
± erect; internodes 0.1–1 mm, ± hirsute to strigose or glabrate. |
Leaves | basal and cauline, blades ± spatulate, 5–10(–15+) × 1.5–3+ mm, ± fleshy, faces sparsely strigose or glabrate. |
basal and cauline, blades ± spatulate to narrowly oblanceolate or linear, 12–40(–75) × 2–6+ mm, not fleshy, faces ± strigillose. |
Involucres | ± campanulate, 6–10 mm diam. |
± hemispheric, (10–)12–25+ mm diam. |
Ray florets | 8–21; corollas white or pinkish adaxially, laminae 4–8 mm, abaxially usually glabrous, sometimes sparsely glandular-puberulent. |
11–40; corollas white adaxially, laminae (9–)12–18+ mm, glabrous abaxially. |
Disc florets | 20–40+; corollas 3–4 mm. |
100–150+; corollas 6.5–9(–12+) mm. |
Phyllaries | 20–28 in 3–4+ series, the longer ± lanceolate, 5–7 mm (l/w = 2.5–5), sometimes glabrate, apices obtuse to acute, abaxial faces usually ± strigillose. |
30–45(–60) in 4–6+ series, the longer narrowly lanceolate or linear to subulate, (10–)12–14(–17) mm (l/w = 6–9), apices obtuse to acute, abaxial faces sparsely strigillose or glabrate. |
Heads | ± sessile. |
± sessile (usually nestled among rosette leaves). |
Cypselae | 2–3.5 mm, faces hairy, hair tips entire or forked; pappi persistent, 15–30 subulate to setiform scales 3–5 mm. |
4(–6+) mm, faces hairy, hair tips glochidiform; pappi persistent; on ray cypselae 20–30 setiform scales 6–8+ mm; on disc cypselae 20–30+ setiform scales 6.5–11+ mm. |
2n | = 27 (apomicts). |
= 18. |
Townsendia minima |
Townsendia exscapa |
|
Phenology | Flowering Apr–Jun. | Flowering Mar–Jun(–Aug). |
Habitat | Rocky slopes, talus | Openings in pine forests, meadows, gravelly hills, sandy soils |
Elevation | 1800–3100 m (5900–10200 ft) | (1300–)1600–2300(–3300) m ((4300–)5200–7500(–10800) ft) |
Distribution |
UT
|
AZ; CO; ID; KS; MT; ND; NE; NM; NV; OK; SD; TX; UT; WY; AB; MB; SK; Mexico (Chihuahua)
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Discussion | Of conservation concern. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
|
Source | FNA vol. 20, p. 202. | FNA vol. 20, p. 200. |
Parent taxa | ||
Sibling taxa | ||
Synonyms | T. alpigena var. minima | Aster exscapus, T. sericea |
Name authority | Eastwood: Leafl. W. Bot. 1: 206. (1936) | (Richardson) Porter: Mem. Torrey Bot. Club 5: 321. (1894) |
Web links |