Townsendia strigosa |
Townsendia gypsophila |
|
---|---|---|
hairy Townsend-daisy, hairy townsendia |
gypsum-lovingtownsend daisy |
|
Habit | Biennials, (1–)3–10(–20) cm. | Perennials, 2–10 cm (± pulvinate to dendroid). |
Stems | decumbent to erect; internodes 5–25 mm, piloso-strigose to strigillose (surfaces seldom hidden by hairs). |
± erect; inter- nodes 0.1–1+ mm, densely piloso-hirsute to hispidulous (surfaces usually hidden by hairs). |
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 or oblanceolate to linear, 4–9(–25) × 1–2(–3) mm, ± fleshy, ± strigose. |
Involucres | ± campanulate, 5–20 mm diam. |
± hemispheric to campanulate, 3–6 mm diam. |
Ray florets | 8–30+; corollas white or pinkish adaxially, laminae 5–14 mm, abaxially usually glabrous, sometimes glandular-puberulent. |
(4–)12–16; corollas white or pinkish adaxially, laminae 3–5+ mm, glabrous abaxially. |
Disc florets | (8–)20–80(–100+); corollas 3.5–5 mm. |
40–60; corollas 2.5–3+ 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. |
22–26 in 3–4+ series, the longer ± lanceolate, 3–4 mm (l/w = 2.5–5), apices acute, abaxial faces ± strigillose. |
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. |
2–2.5 mm, faces hairy, hair tips glochidiform; pappi persistent; on ray cypselae 12–15 lance-subulate scales 0.1–0.5 mm; on disc cypselae 12–15+ subulate to setiform scales 2.5–3+ mm. |
2n | = 18. |
|
Townsendia strigosa |
Townsendia gypsophila |
|
Phenology | Flowering May–Jun. | Flowering Apr–Sep. |
Habitat | Open sites, sands, shales, clays with desert scrub, junipers, pinyons | Gypsum outcrops |
Elevation | 1500–2000 m (4900–6600 ft) | 1600–2100 m (5200–6900 ft) |
Distribution |
AZ; CO; NM; UT; WY
|
NM |
Discussion | Of conservation concern. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
|
Source | FNA vol. 20, p. 199. | FNA vol. 20, p. 199. |
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) | Lowrey & P. J. Knight: Brittonia 46: 194, fig. 2. (1994) |
Web links |