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Comments

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At the northern margin of the range, glabrate plants with the general habit of Wyethia arizonica (introgressants with W. amplexicaulis) exhibit greater frost-hardiness (a characteristic of W. amplexicaulis) than do other members of the species.
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Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
bibliographic citation
Flora of North America Vol. 21: 101, 103, 104 in eFloras.org, Missouri Botanical Garden. Accessed Nov 12, 2008.
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Flora of North America @ eFloras.org
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Description

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Plants 20–30(–100) cm. Basal leaves: blades elliptic or lance-elliptic to lanceolate, 12–30 cm, margins entire, not ciliate, faces usually ± hirsutulous or scabrellous, sometimes glabrate; cauline leaves mostly smaller, narrower, distal-most usually petiolate, rarely sessile and clasping. Heads borne singly or 2–4+ in ± corymbiform arrays. Involucres turbinate to hemispheric, 18–25+ mm diam. Phyllaries 16–34, subequal, ± herbaceous, margins ciliate, faces glabrous or strigillose to hispidulous; outer 18–22(–30) mm (not or seldom surpassing discs). Ray florets 11–12; laminae (25–)35–50 mm (abaxially hirsutulous). Cypselae 9–10 mm, glabrous. 2n = 38.
license
cc-by-nc-sa-3.0
copyright
Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
bibliographic citation
Flora of North America Vol. 21: 101, 103, 104 in eFloras.org, Missouri Botanical Garden. Accessed Nov 12, 2008.
source
Flora of North America @ eFloras.org
editor
Flora of North America Editorial Committee
project
eFloras.org
original
visit source
partner site
eFloras

Wyethia arizonica

provided by wikipedia EN

Wyethia arizonica, the Arizona mule's ears, is a plant species native to Arizona, Colorado, New Mexico and Utah. It grows in meadows in coniferous forests at elevations of 600–3,000 m (2,000–9,800 ft).[1]

Wyethia arizonica is a perennial herb with a large taproot, the shoot up to 100 cm (39 in) tall. Leaves are elliptic to lanceolate, up to 30 cm (12 in) long. Flower heads are 1-4 per plant, with yellow flowers.[2][3][4]

References

  1. ^ Flora of North America v 21 p 103.
  2. ^ Gray, Asa. Notes on Compositae and characters of certain genera and species, etc. Proceedings of the American Academy of Arts and Sciences 8: 631-661. 1873.
  3. ^ Cronquist, A.J. 1994. Asterales. 5: 1–496. In A.J. Cronquist, A. H. Holmgren, N. H. Holmgren, J. L. Reveal & P. K. Holmgren (eds.) Intermountain Flora. Hafner Pub. Co., New York.
  4. ^ Weber, W. A. 1946. A taxonomic and cytological study of the genus Wyethia, family Compositae, with notes on the related genus Balsamorhiza. American Midland Naturalist 35: 400–452.
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Wyethia arizonica: Brief Summary

provided by wikipedia EN

Wyethia arizonica, the Arizona mule's ears, is a plant species native to Arizona, Colorado, New Mexico and Utah. It grows in meadows in coniferous forests at elevations of 600–3,000 m (2,000–9,800 ft).

Wyethia arizonica is a perennial herb with a large taproot, the shoot up to 100 cm (39 in) tall. Leaves are elliptic to lanceolate, up to 30 cm (12 in) long. Flower heads are 1-4 per plant, with yellow flowers.

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Wikipedia authors and editors
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wikipedia EN