Townsendia microcephala |
Townsendia minima |
|
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smallhead Townsend daisy |
Wyoming Townsend daisy |
|
Habit | Perennials, 1–3 cm (usually ± pulvinate). | Perennials, 1–2+ cm (± pulvinate). |
Stems | ± erect; internodes 0.1–1 mm, ± villous. |
± erect; internodes 0.1–1+ mm, ± strigose. |
Leaves | basal and cauline, ± spatulate to oblanceolate, 3–8(–18) × 1–2.5 mm (not fleshy), faces ± villous. |
basal and cauline, blades ± spatulate, 5–10(–15+) × 1.5–3+ mm, ± fleshy, faces sparsely strigose or glabrate. |
Involucres | ± campanulate, 4–8 mm diam. |
± campanulate, 6–10 mm diam. |
Ray florets | 13–17; corollas white adaxially, laminae 5–8 mm, glabrous abaxially. |
8–21; corollas white or pinkish adaxially, laminae 4–8 mm, abaxially usually glabrous, sometimes sparsely glandular-puberulent. |
Disc florets | number unknown; corollas 4 mm. |
20–40+; corollas 3–4 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. |
20–28 in 3–4+ series, the longer ± lanceolate, 5–7 mm (l/w = 2.5–5), sometimes glabrate, apices obtuse to acute, abaxial faces usually ± strigillose. |
Heads | ± sessile. |
± sessile. |
Cypselae | 3–4 mm, faces glabrous or glabrate; pappi readily falling, of 15–20 subulate to setiform scales 3–5 mm (± connate basally). |
2–3.5 mm, faces hairy, hair tips entire or forked; pappi persistent, 15–30 subulate to setiform scales 3–5 mm. |
2n | = 27 (apomicts). |
|
Townsendia microcephala |
Townsendia minima |
|
Phenology | Flowering Jul. | Flowering Apr–Jun. |
Habitat | Rocky slopes | Rocky slopes, talus |
Elevation | 2600 m (8500 ft) | 1800–3100 m (5900–10200 ft) |
Distribution |
WY |
UT
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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 | ||
Synonyms | T. alpigena var. minima | |
Name authority | Dorn: Madroño 39: 189, fig. 1. (1992) | Eastwood: Leafl. W. Bot. 1: 206. (1936) |
Web links |