Townsendia eximia |
Townsendia aprica |
|
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tall Townsend daisy, tall townsendia |
last chance Townsend daisy |
|
Habit | Biennials or perennials, 6–15(–30+) cm (sometimes rhizomatous). | Perennials, 1–2 cm (± pulvinate). |
Stems | ± erect; internodes 6–8(–25) mm, ± strigose. |
± erect; internodes 0.1–1 mm, ± strigose. |
Leaves | basal and cauline, blades spatulate to oblanceolate, 15–60(–120+) × 2–6(–10) mm (margins strigoso-ciliate), faces usually glabrous, sometimes sparsely strigillose. |
basal and cauline, blades ± spatulate, 5–8(–16+) × 1.5–2.5+ mm, little, if at all, fleshy, faces ± strigose. |
Involucres | hemispheric or broader, (8–)12–25+ mm diam. |
± campanulate, 4–8+ mm diam. |
Ray florets | 15–55+; corollas usually blue adaxially, laminae 12–20 mm, glabrous abaxially. |
13–21; corollas yellow adaxially, laminae 4–6+ mm, glandular-puberulent abaxially. |
Disc florets | (60–)100–150+; corollas (3.5–)4–5+ mm. |
25–60+; corollas 4–5+ mm. |
Phyllaries | (30–)60–80+ in (4–)5–6+ series, the longer ± lanceolate, (7–)12–13+ mm (l/w = 3–5), apices acute to attenuate (most hard, apiculate), abaxial faces sparsely strigillose or glabrous. |
24–40+ in 4+ series, the longer ± lanceolate, 4–7 mm (l/w = 2.5–5), sometimes glabrate, apices acute to attenuate, abaxial faces usually sparsely strigillose or glandular-puberulent. |
Heads | at tips of ± leafy stems. |
± sessile. |
Cypselae | 3–4+ mm, faces ± hairy, hair tips forked or glochidiform; pappi persistent; on ray cypselae each a corona 0.1–0.5 mm; on disc cypselae each of 8–12+ lanceolate scales 0.5–1 mm plus 1–2+ subulate to setiform scales 1–4 mm. |
2–2.5 mm, faces hairy, hair tips glochidiform; pappi persistent; on ray cypselae 10–12 lanceolate to subulate scales 0.5–1+ mm; on disc cypselae 20+ subulate to setiform scales 4–5+ mm. |
2n | = 18. |
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Townsendia eximia |
Townsendia aprica |
|
Phenology | Flowering (May–)Jul–Aug(–Oct). | Flowering Apr–May. |
Habitat | Gravelly banks, canyon walls, with junipers, pinyons, and yellow pines | Clay hills |
Elevation | (1900–)2100–2500(–3300) m ((6200–)6900–8200(–10800) ft) | 1500–2500 m (4900–8200 ft) |
Distribution |
CO; NM
|
UT |
Discussion | Of conservation concern. Townsendia aprica is questionably distinct from T. jonesii. Townsendia aprica is in the Center for Plant Conservation’s National Collection of Endangered Plants. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
|
Source | FNA vol. 20, p. 197. | FNA vol. 20, p. 201. |
Parent taxa | Asteraceae > tribe Astereae > Townsendia | Asteraceae > tribe Astereae > Townsendia |
Sibling taxa | ||
Synonyms | T. jonesii var. lutea | |
Name authority | A. Gray: Mem. Amer. Acad. Arts, n. s. 4: 70. (1849) | S. L. Welsh & Reveal: Brittonia 20: 375, fig. 1. (1968) |
Web links |