Townsendia formosa |
Townsendia florifera |
|
---|---|---|
smooth Townsend daisy |
|
|
Habit | Biennials or perennials, 10–35(–75+) cm (usually rhizomatous and/or stoloniferous). | Biennials (perhaps flowering first year, sometimes persisting), 3–12(–15+) cm. |
Stems | erect; internodes (5–)10–15(–35) mm, strigillose. |
decumbent to erect; internodes 3–12(–15+) mm, piloso-strigose. |
Leaves | basal and cauline, blades spatulate to oblanceolate or lance-linear, 15–45(–75+) × 2–10(–20) mm, not fleshy (margins strigoso-ciliolate), glabrous or glabrate. |
basal and cauline, blades spatulate to linear, 10–25(–50+) × 2–3(–8+) mm, not fleshy, faces ± strigose. |
Involucres | ± hemispheric or broader, 12–18+ mm diam. |
± hemispheric or broader, 16–20(–30) mm diam. |
Ray florets | 20–34+; corollas usually white or pinkish adaxially (abaxially blue to lavender), laminae 10–15(–25+) mm, glabrous abaxially. |
13–34+; corollas white or pinkish adaxially, laminae (8–)10–18+ mm, abaxially usually glandular-puberulent, rarely glabrous. |
Disc florets | 80–150+; corollas 4 mm. |
(80–)100–150+; corollas (4–)5.5–6+ mm. |
Phyllaries | 30–45 in 4–6+ series, the longer obovate to lance-ovate or lanceolate, 10–12(–14) mm (l/w = 3–5), apices obtuse to acute (some or all hard, ± apiculate), abaxial faces sparsely strigillose or glabrous. |
24–30+ in 3–4+ series, the longer ± lanceolate, (6–)9–11+ mm (l/w = 2.5–5), apices acute, abaxial faces strigose. |
Heads | at tips of stems (seldom surpassed by leaves). |
at tips of stems. |
Cypselae | 3–4(–5) mm, faces glabrous or ± stipitate-glandular, hair tips not forked or glochidiform; pappi persistent, each a bidentate corona 0.1–0.4(–0.8) mm. |
(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. |
2n | = 18. |
= 18. |
Townsendia formosa |
Townsendia florifera |
|
Phenology | Flowering Jul–Aug(–Sep). | Flowering Apr–Jun(–Aug). |
Habitat | Meadows, yellow-pine forests | Gravelly flats with junipers and sagebrush |
Elevation | 2400–2600 m (7900–8500 ft) | 400–2300 m (1300–7500 ft) |
Distribution |
AZ; NM |
ID; MT; NV; OR; UT; WA; WY |
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.) |
|
Source | FNA vol. 20, p. 197. | FNA vol. 20, p. 198. |
Parent taxa | ||
Sibling taxa | ||
Synonyms | Erigeron florifer, T. florifera var. watsonii | |
Name authority | Greene: Leafl. Bot. Observ. Crit. 1: 213. (1906) | (Hooker) A. Gray: Proc. Amer. Acad. Arts 16: 84. (1880) |
Web links |