Townsendia annua |
Townsendia formosa |
|
---|---|---|
annual Easter daisy, annual Townsend daisy |
smooth Townsend daisy |
|
Habit | Annuals, 3–12(–16+) cm. | Biennials or perennials, 10–35(–75+) cm (usually rhizomatous and/or stoloniferous). |
Stems | decumbent to erect; internodes (1–)3–12(–18+) mm, strigose. |
erect; internodes (5–)10–15(–35) mm, strigillose. |
Leaves | mostly cauline, blades spatulate to narrowly oblanceolate, 8–12(–25+) × 1–3(–5+) mm, not fleshy, faces ± strigillose. |
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. |
Involucres | ± hemispheric, 8–12(–16) mm diam. |
± hemispheric or broader, 12–18+ mm diam. |
Ray florets | 12–30+; corollas white or pinkish to lavender adaxially, laminae 5–8+ mm, glabrous abaxially. |
20–34+; corollas usually white or pinkish adaxially (abaxially blue to lavender), laminae 10–15(–25+) mm, glabrous abaxially. |
Disc florets | 60–120+; corollas 2.5–3.5+ mm. |
80–150+; corollas 4 mm. |
Phyllaries | 26–30+ in 3+ series, the longer ± lance-ovate to oblanceolate, 5–6+ mm (l/w = 2.5–5), apices acute, abaxial faces strigillose to glabrate. |
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. |
Heads | at tips of stems. |
at tips of stems (seldom surpassed by leaves). |
Cypselae | 2–3 mm, faces hairy, hair tips glochidiform; pappi persistent; on ray cypselae ± 10 lanceolate scales 0.2–0.5(–1) mm; on disc cypselae 20+ subulate scales 1–2.5(–4) mm. |
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. |
2n | = 18. |
= 18. |
Townsendia annua |
Townsendia formosa |
|
Phenology | Flowering Apr–Jun(–Oct). | Flowering Jul–Aug(–Sep). |
Habitat | Sandy soils, alkaline flats, red clays | Meadows, yellow-pine forests |
Elevation | 1200–2100 m (3900–6900 ft) | 2400–2600 m (7900–8500 ft) |
Distribution |
AZ; CO; NM; TX; UT; WY
|
AZ; NM |
Discussion | The type of Townsendia annua may prove to be conspecific with that of T. strigosa. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
|
Source | FNA vol. 20, p. 198. | FNA vol. 20, p. 197. |
Parent taxa | ||
Sibling taxa | ||
Name authority | Beaman: Contr. Gray Herb. 183: 132, plate 22, fig. 4. (1957) | Greene: Leafl. Bot. Observ. Crit. 1: 213. (1906) |
Web links |