Townsendia strigosa |
Townsendia formosa |
|
---|---|---|
hairy Townsend-daisy, hairy townsendia |
smooth Townsend daisy |
|
Habit | Biennials, (1–)3–10(–20) cm. | Biennials or perennials, 10–35(–75+) cm (usually rhizomatous and/or stoloniferous). |
Stems | decumbent to erect; internodes 5–25 mm, piloso-strigose to strigillose (surfaces seldom hidden by hairs). |
erect; internodes (5–)10–15(–35) mm, strigillose. |
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 spatulate to oblanceolate or lance-linear, 15–45(–75+) × 2–10(–20) mm, not fleshy (margins strigoso-ciliolate), glabrous or glabrate. |
Involucres | ± campanulate, 5–20 mm diam. |
± hemispheric or broader, 12–18+ mm diam. |
Ray florets | 8–30+; corollas white or pinkish adaxially, laminae 5–14 mm, abaxially usually glabrous, sometimes glandular-puberulent. |
20–34+; corollas usually white or pinkish adaxially (abaxially blue to lavender), laminae 10–15(–25+) mm, glabrous abaxially. |
Disc florets | (8–)20–80(–100+); corollas 3.5–5 mm. |
80–150+; corollas 4 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. |
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 (usually surpassed by leaves). |
at tips of stems (seldom surpassed by leaves). |
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. |
3–4(–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 strigosa |
Townsendia formosa |
|
Phenology | Flowering May–Jun. | Flowering Jul–Aug(–Sep). |
Habitat | Open sites, sands, shales, clays with desert scrub, junipers, pinyons | Meadows, yellow-pine forests |
Elevation | 1500–2000 m (4900–6600 ft) | 2400–2600 m (7900–8500 ft) |
Distribution |
AZ; CO; NM; UT; WY
|
AZ; NM |
Source | FNA vol. 20, p. 199. | FNA vol. 20, p. 197. |
Parent taxa | Asteraceae > tribe Astereae > Townsendia | Asteraceae > tribe Astereae > Townsendia |
Sibling taxa | ||
Synonyms | T. strigosa var. prolixa | |
Name authority | Nuttall: Trans. Amer. Philos. Soc., n. s. 7: 306. (1840) | Greene: Leafl. Bot. Observ. Crit. 1: 213. (1906) |
Web links |