Townsendia strigosa |
Townsendia hookeri |
|
---|---|---|
hairy Townsend-daisy, hairy townsendia |
Hooker's Townsend daisy, Hooker's townsendia |
|
Habit | Biennials, (1–)3–10(–20) cm. | Perennials, 1–3 cm (± pulvinate). |
Stems | decumbent to erect; internodes 5–25 mm, piloso-strigose to strigillose (surfaces seldom hidden by hairs). |
± erect; internodes 0.1–1 mm, ± strigose. |
Leaves | basal and cauline, blades spatulate to oblanceolate or linear, 12–30(–50) × 2–7(–9) mm, not fleshy, faces ± strigose to strigillose. |
basal and cauline, blades narrowly oblanceolate to linear, 5–25(–40+) × 1–1.5(–3) mm, fleshy, faces ± strigoso-sericeous, little, if at all. |
Involucres | ± campanulate, 5–20 mm diam. |
± campanulate, 8–18+ mm diam. |
Ray florets | 8–30+; corollas white or pinkish adaxially, laminae 5–14 mm, abaxially usually glabrous, sometimes glandular-puberulent. |
15–35; corollas white adaxially, laminae 8–12+ mm, glabrous abaxially. |
Disc florets | (8–)20–80(–100+); corollas 3.5–5 mm. |
120–180+; corollas 4–5(–6+) mm. |
Phyllaries | 20–24 in 3–4+ series, the longer ± lance-ovate to lanceolate, 5–9 mm (l/w = 2.5–5), apices acute to acuminate, abaxial faces strigose. |
50–65+ in 5+ series, the longer ± lance-linear, 7–11(–13) mm (l/w = 6–9), apices attenuate, abaxial faces sparsely strigose or glabrate. |
Heads | at tips of stems (usually surpassed by leaves). |
± sessile. |
Cypselae | 3–4 mm, faces hairy, hair tips glochidiform; pappi persistent; on ray cypselae 12–20+ lanceolate to subulate scales 0.5–1.5+ mm; on disc cypselae 20–35 subulate to setiform scales 3.5–5.5 mm. |
3.5–4.5 mm, faces hairy, hair tips glochidiform; pappi persistent; on ray cypselae ca. 30 subulate to setiform scales (1–)5–7 mm; on disc cypselae ca. 30 subulate to setiform scales 5.5–7.5+ mm. |
2n | = 18. |
= 18. |
Townsendia strigosa |
Townsendia hookeri |
|
Phenology | Flowering May–Jun. | Flowering Mar–Jun. |
Habitat | Open sites, sands, shales, clays with desert scrub, junipers, pinyons | Gravelly benches, sandy slopes |
Elevation | 1500–2000 m (4900–6600 ft) | 700–1800 m (2300–5900 ft) |
Distribution |
AZ; CO; NM; UT; WY
|
AK; CO; ID; MT; ND; NE; SD; UT; WY; AB; BC; SK; YT
|
Source | FNA vol. 20, p. 199. | FNA vol. 20, p. 200. |
Parent taxa | Asteraceae > tribe Astereae > Townsendia | Asteraceae > tribe Astereae > Townsendia |
Sibling taxa | ||
Synonyms | T. strigosa var. prolixa | T. nuttallii |
Name authority | Nuttall: Trans. Amer. Philos. Soc., n. s. 7: 306. (1840) | Beaman: Contr. Gray Herb. 183: 95, plates 17, 20, figs. 5, 6. (1957) |
Web links |