dcsimg

Description

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Plants 15–50(–60) cm. Stems simple or branched among heads. Leaves (2–)3–4 pairs, basal and cauline (basal usually withered by flowering, petiolate or subsessile, blades ovate or nearly round to oblong-ovate, much smaller than cauline; sterile rosettes often present, proximal cauline often crowded toward stems bases); petiolate; blades broadly to narrowly lanceolate, oblong-ovate, ovate-lanceolate, or round, 4–22 × 1–6 cm, (bases obtuse or cuneate to truncate) margins usually entire, sometimes sparsely denticulate, faces scantily to moderately pilose (hairs white), adaxial sparsely stipitate-glandular (distal cauline leaves sessile, extremely reduced, nearly linear to narrowly elliptic-lanceolate). Heads (1–)3–9(–14; often nodding in bud). Involucres turbinate to narrowly campanulate. Phyllaries 8–20, linear to narrowly lanceolate. Ray florets usually 0 (sometimes peripheral florets pistillate; corollas yellow, laminae rudimentary). Disc florets 20–50; corollas yellow (1 or more lobes sometimes expanded, giving appearance of laminae); anthers yellow. Cypselae brown to black, 4–7 mm, glabrous or sparsely stipitate-glandular to densely hirsute; pappi usually stramineous, rarely tawny, bristles barbellate to ± subplumose. 2n = 38, 57, 76.
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Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
bibliographic citation
Flora of North America Vol. 21: 363, 367, 373 in eFloras.org, Missouri Botanical Garden. Accessed Nov 12, 2008.
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Flora of North America @ eFloras.org
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Flora of North America Editorial Committee
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eFloras.org
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Synonym

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Arnica angustifolia Vahl subsp. eradiata A. Gray, Proc. Acad. Nat. Sci. Philadelphia 15: 68. 1864; A. parryi A. Gray subsp. sonnei (Greene) Maguire; A. parryi var. sonnei (Greene) Cronquist
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: 363, 367, 373 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

Arnica parryi

provided by wikipedia EN

Arnica parryi is a North American species of arnica known by the common name Parry's arnica or nodding arnica.[3] It is native to western Canada (Yukon, British Columbia, Alberta) and the western United States as far south as Inyo County, California and McKinley County, New Mexico. It grows in temperate coniferous forests and alpine meadows in mountainous areas, primarily the Rocky Mountains, Cascades, and Sierra Nevada.[4]

Arnica parryi is a rhizomatous perennial herb producing a single unbranched stem to heights between 10 and 60 centimeters. There are oval-shaped leaves around the base of the stem and a few pairs of longer, narrower petioled leaves above them. The leaves may approach 20 centimeters in length on larger individuals.[5]

The inflorescence holds one to several daisylike flower heads, which nod as buds and then pull erect when the face opens. Each head has a center filled with yellow disc florets and usually several yellow ray florets around the edge. The fruit is a cylindrical achene about half a centimeter long with a bristly pappus.[5]

References

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Arnica parryi: Brief Summary

provided by wikipedia EN

Arnica parryi is a North American species of arnica known by the common name Parry's arnica or nodding arnica. It is native to western Canada (Yukon, British Columbia, Alberta) and the western United States as far south as Inyo County, California and McKinley County, New Mexico. It grows in temperate coniferous forests and alpine meadows in mountainous areas, primarily the Rocky Mountains, Cascades, and Sierra Nevada.

Arnica parryi is a rhizomatous perennial herb producing a single unbranched stem to heights between 10 and 60 centimeters. There are oval-shaped leaves around the base of the stem and a few pairs of longer, narrower petioled leaves above them. The leaves may approach 20 centimeters in length on larger individuals.

The inflorescence holds one to several daisylike flower heads, which nod as buds and then pull erect when the face opens. Each head has a center filled with yellow disc florets and usually several yellow ray florets around the edge. The fruit is a cylindrical achene about half a centimeter long with a bristly pappus.

license
cc-by-sa-3.0
copyright
Wikipedia authors and editors
original
visit source
partner site
wikipedia EN