Townsendia minima |
Townsendia rothrockii |
|
---|---|---|
Wyoming Townsend daisy |
Rothrock's Townsend daisy, Rothrock's townsendia |
|
Habit | Perennials, 1–2+ cm (± pulvinate). | Perennials, 1–3 cm (± pulvinate). |
Stems | ± erect; internodes 0.1–1+ mm, ± strigose. |
± erect; internodes 0.1–1+ mm, glabrous or ± strigose. |
Leaves | basal and cauline, blades ± spatulate, 5–10(–15+) × 1.5–3+ mm, ± fleshy, faces sparsely strigose or glabrate. |
basal and cauline, ± spatulate to oblanceolate, 10–35 × 2–7 mm, ± fleshy, faces sparsely strigose or glabrous. |
Involucres | ± campanulate, 6–10 mm diam. |
± hemispheric, 12–28+ mm diam. |
Ray florets | 8–21; corollas white or pinkish adaxially, laminae 4–8 mm, abaxially usually glabrous, sometimes sparsely glandular-puberulent. |
18–40; corollas blue to purplish adaxially, laminae 8–16 mm, glabrous abaxially. |
Disc florets | 20–40+; corollas 3–4 mm. |
60–100+; corollas 3.5–4.5+ mm. |
Phyllaries | 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. |
40–60+ in (3–)4–5+ series, the longer obovate to oblanceolate, 7–9+ mm (l/w = 2.5–5), apices obtuse to acute, abaxial faces glabrous. |
Heads | ± sessile. |
± sessile or on peduncles 5–25+ mm. |
Cypselae | 2–3.5 mm, faces hairy, hair tips entire or forked; pappi persistent, 15–30 subulate to setiform scales 3–5 mm. |
4 mm, faces nearly glabrous (discs) or sparsely hairy (ray, hairs mostly at bases), hair tips glochidiform; pappi persistent; on ray cypselae 12–20 lanceolate to subulate scales 0.5–1.5 mm; on disc cypselae 15–30 subulate to setiform scales 3–6 mm. |
2n | = 27 (apomicts). |
= 36 (apomicts). |
Townsendia minima |
Townsendia rothrockii |
|
Phenology | Flowering Apr–Jun. | Flowering Aug. |
Habitat | Rocky slopes, talus | South slopes |
Elevation | 1800–3100 m (5900–10200 ft) | 3600–4000 m (11800–13100 ft) |
Distribution |
UT
|
CO
|
Discussion | Of conservation concern. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Of conservation concern. The types of Townsendia rothrockii and T. glabella may be conspecific. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 20, p. 202. | FNA vol. 20, p. 202. |
Parent taxa | ||
Sibling taxa | ||
Synonyms | T. alpigena var. minima | |
Name authority | Eastwood: Leafl. W. Bot. 1: 206. (1936) | A. Gray ex Rothrock: Rep. U.S. Geogr. Surv., Wheeler 6: 148. (1879) |
Web links |