Townsendia strigosa |
Townsendia smithii |
|
---|---|---|
hairy Townsend-daisy, hairy townsendia |
Black Rock Townsend daisy |
|
Habit | Biennials, (1–)3–10(–20) cm. | Perennials, 3–8(–12+) cm (usually ± pulvinate). |
Stems | decumbent to erect; internodes 5–25 mm, piloso-strigose to strigillose (surfaces seldom hidden by hairs). |
± erect; internodes 0.1–1 mm, ± scabrellous. |
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, ± spatulate to oblanceolate, 15–50(–80) × 2–6(–11) mm, little, if at all, fleshy, faces ± scabrellous. |
Involucres | ± campanulate, 5–20 mm diam. |
± hemispheric to campanulate, 10–15 mm diam. |
Ray florets | 8–30+; corollas white or pinkish adaxially, laminae 5–14 mm, abaxially usually glabrous, sometimes glandular-puberulent. |
12–21; corollas white adaxially, laminae 6–12+ mm, glabrous abaxially. |
Disc florets | (8–)20–80(–100+); corollas 3.5–5 mm. |
60–80+; corollas 3.5–5 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. |
14–26 in 2–3+ series, the longer lance-ovate to lanceolate, 9–11 mm (l/w = 3–5), apices attenuate, abaxial faces piloso-strigose to strigose. |
Heads | at tips of stems (usually surpassed by leaves). |
on scapiform peduncles 30–80(–120) mm. |
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. |
2.5–3.5 mm, faces hairy, hair tips entire; pappi persistent, 16–20+ lanceolate to subulate scales 0.2–0.8 mm (± connate). |
2n | = 18. |
= 18. |
Townsendia strigosa |
Townsendia smithii |
|
Phenology | Flowering May–Jun. | Flowering May. |
Habitat | Open sites, sands, shales, clays with desert scrub, junipers, pinyons | Volcanic soils, pinyon or yellow pines |
Elevation | 1500–2000 m (4900–6600 ft) | 2000–2400 m (6600–7900 ft) |
Distribution |
AZ; CO; NM; UT; WY
|
AZ |
Discussion | Of conservation concern. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
|
Source | FNA vol. 20, p. 199. | FNA vol. 20, p. 202. |
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) | L. M. Shultz & A. H. Holmgren: Brittonia 32: 144, fig. 1. (1980) |
Web links |