Townsendia microcephala |
Townsendia smithii |
|
---|---|---|
smallhead Townsend daisy |
Black Rock Townsend daisy |
|
Habit | Perennials, 1–3 cm (usually ± pulvinate). | Perennials, 3–8(–12+) cm (usually ± pulvinate). |
Stems | ± erect; internodes 0.1–1 mm, ± villous. |
± erect; internodes 0.1–1 mm, ± scabrellous. |
Leaves | basal and cauline, ± spatulate to oblanceolate, 3–8(–18) × 1–2.5 mm (not fleshy), faces ± villous. |
basal and cauline, ± spatulate to oblanceolate, 15–50(–80) × 2–6(–11) mm, little, if at all, fleshy, faces ± scabrellous. |
Involucres | ± campanulate, 4–8 mm diam. |
± hemispheric to campanulate, 10–15 mm diam. |
Ray florets | 13–17; corollas white adaxially, laminae 5–8 mm, glabrous abaxially. |
12–21; corollas white adaxially, laminae 6–12+ mm, glabrous abaxially. |
Disc florets | number unknown; corollas 4 mm. |
60–80+; corollas 3.5–5 mm. |
Phyllaries | ca. 26 in 3–4 series, the longer ± lanceolate, 5–8 mm (l/w = 3–5), apices acute, abaxial faces ± strigose to villous. |
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 | ± sessile. |
on scapiform peduncles 30–80(–120) mm. |
Cypselae | 3–4 mm, faces glabrous or glabrate; pappi readily falling, of 15–20 subulate to setiform scales 3–5 mm (± connate basally). |
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. |
|
Townsendia microcephala |
Townsendia smithii |
|
Phenology | Flowering Jul. | Flowering May. |
Habitat | Rocky slopes | Volcanic soils, pinyon or yellow pines |
Elevation | 2600 m (8500 ft) | 2000–2400 m (6600–7900 ft) |
Distribution |
WY |
AZ |
Discussion | Of conservation concern. The type of Townsendia microcephala may prove to be conspecific with that of T. spathulata. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Of conservation concern. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 20, p. 196. | FNA vol. 20, p. 202. |
Parent taxa | ||
Sibling taxa | ||
Name authority | Dorn: Madroño 39: 189, fig. 1. (1992) | L. M. Shultz & A. H. Holmgren: Brittonia 32: 144, fig. 1. (1980) |
Web links |