Townsendia incana |
Townsendia annua |
|
---|---|---|
hoary Townsend daisy, hoary townsendia, silvery townsendia |
annual Easter daisy, annual Townsend daisy |
|
Habit | Perennials, (1–)2–8(–12+) cm. | Annuals, 3–12(–16+) cm. |
Stems | decumbent to erect; internodes (0.5–)2–6(–12+) mm, usually densely piloso-hirsute, sometimes strigoso-scabrellous (surfaces usually hidden by hairs). |
decumbent to erect; internodes (1–)3–12(–18+) mm, strigose. |
Leaves | basal and cauline, blades spatulate to narrowly oblanceolate, 3–12(–40+) × 1–2(–4+) mm, not fleshy, ± strigoso-scabrellous to strigillose. |
mostly cauline, blades spatulate to narrowly oblanceolate, 8–12(–25+) × 1–3(–5+) mm, not fleshy, faces ± strigillose. |
Involucres | ± campanulate to hemispheric, (6–)10–15(–20) mm diam. |
± hemispheric, 8–12(–16) mm diam. |
Ray florets | (8–)13–34+; corollas white or pinkish adaxially, laminae 5–8(–12+) mm, abaxially usually glabrous, sometimes glandular-puberulent at bases. |
12–30+; corollas white or pinkish to lavender adaxially, laminae 5–8+ mm, glabrous abaxially. |
Disc florets | 60–80+; corollas 4.5–6.5+ mm. |
60–120+; corollas 2.5–3.5+ mm. |
Phyllaries | 16–28+ in 3–4+ series, the longer ± lance-ovate to lanceolate, (6–)8–9(–12+) mm (l/w = 2.5–5), apices acute, abaxial faces strigose. |
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. |
Heads | at tips of stems (usually surpassed by leaves). |
at tips of stems. |
Cypselae | 3.5–4.5+ mm, faces hairy, hair tips glochidiform; pappi persistent; on ray cypselae 15–30 lanceolate or subulate to setiform scales 0.3–0.6 or 4–6+ mm; on disc cypselae 15–30+ subulate to setiform scales 4–6+ mm. |
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. |
2n | = 18. |
= 18. |
Townsendia incana |
Townsendia annua |
|
Phenology | Flowering Apr–Jul. | Flowering Apr–Jun(–Oct). |
Habitat | Sandy soils, rocky benches, shales, with pinyons and junipers | Sandy soils, alkaline flats, red clays |
Elevation | 1100–2200 m (3600–7200 ft) | 1200–2100 m (3900–6900 ft) |
Distribution |
AZ; CO; MT; NM; NV; UT; WY
|
AZ; CO; NM; TX; UT; WY
|
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. 199. | FNA vol. 20, p. 198. |
Parent taxa | ||
Sibling taxa | ||
Synonyms | T. arizonica | |
Name authority | Nuttall: Trans. Amer. Philos. Soc., n. s. 7: 305. (1840) | Beaman: Contr. Gray Herb. 183: 132, plate 22, fig. 4. (1957) |
Web links |