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Arnica dealbata (A. Gray) B. G. Baldwin的圖片
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Arnica dealbata (A. Gray) B. G. Baldwin

Comments ( 英語 )

由eFloras提供
Although Arnica dealbata lacks pappi, morphologic, cytologic, and molecular data (B. G. Baldwin and B. L. Wessa 2000; Baldwin et al. 2002) clearly support its inclusion in Arnica.
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版權
Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
書目引用
Flora of North America Vol. 21: 364, 366, 367, 375 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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Description ( 英語 )

由eFloras提供
Plants 15–35 cm. Stems mostly simple. Leaves 3–8 pairs, mostly crowded toward bases; petiolate (at least proximal); blades elliptic to oblanceolate or obovate, 5–10 × 0.5–3.5 cm, margins entire, apices acute, faces densely hairy (hairs relatively short, curly) and sessile-glandular (distal leaves sessile, much reduced). Heads 1–6. Involucres campanulate to hemispheric. Phyllaries 5–12 (in 1 series), oblong or elliptic. Ray florets 5–12; corollas yellow. Disc florets (functionally staminate): corollas yellow; anthers yellow (styles rarely exserted). Cypselae brown to black, 4–10 mm, sparsely to densely hirsute (hairs usually simple, rarely duplex) and sparsely stipitate-glandular; pappi 0. 2n = 38, 76.
許可
cc-by-nc-sa-3.0
版權
Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
書目引用
Flora of North America Vol. 21: 364, 366, 367, 375 in eFloras.org, Missouri Botanical Garden. Accessed Nov 12, 2008.
來源
Flora of North America @ eFloras.org
編輯者
Flora of North America Editorial Committee
專題
eFloras.org
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eFloras

Synonym ( 英語 )

由eFloras提供
Whitneya dealbata A. Gray, Proc. Amer. Acad. Arts 6: 550. 1865
許可
cc-by-nc-sa-3.0
版權
Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
書目引用
Flora of North America Vol. 21: 364, 366, 367, 375 in eFloras.org, Missouri Botanical Garden. Accessed Nov 12, 2008.
來源
Flora of North America @ eFloras.org
編輯者
Flora of North America Editorial Committee
專題
eFloras.org
原始內容
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合作夥伴網站
eFloras

Comprehensive Description ( 英語 )

由North American Flora提供
Whitneya dealbata A. Gray, Proc. Am. Acad. 6: 550. 1865
A low perennial with slender rootstock; stem 2-3 dm. high; leaves opposite, the lower ones spatulate or elliptic, petioled, the upper lanceolate, all entire or denticulate, acute at each end, densely canescent, mostly 3-ribbed; inflorescence cymose; heads 1-5; involucre about 8 mm high and 10-12 mm. broad; ligules oblong, 1-1.5 cm. long, 6-7 mm. wide; achenes oblong, 4 mm. long.
Type locality: California. Distribution: Sierra Nevada, California.
書目引用
Per Axel Rydberg. 1914. (CARDUALES); CARDUACEAE; HELENIEAE. North American flora. vol 34(1). New York Botanical Garden, New York, NY
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North American Flora

Arnica dealbata ( 英語 )

由wikipedia EN提供

Arnica dealbata is a species of Californian plants in the tarweed tribe within the aster family[3][4]

The species is known by the common name mock leopardbane.[5]

Distribution and habitat

It is endemic to California, where it is known from the Sierra Nevada and the southernmost slopes of the Cascade Range.[5][6] It occurs in forest and meadow habitat in the mountains and foothills.

This plant is uncommon throughout its limited distribution and is listed as a sensitive species of Yosemite National Park, where it occurs in two locations.[7]

Description

It is a hairy, glandular, rhizomatous perennial herb producing an erect stem up to about 35 centimeters tall. The leaves have lance-shaped or pointed oval blades up to 10 centimeters long which are borne on petioles. They are arranged in opposite pairs, mostly near the base of the stem. The blades are coated densely in short curly hairs, some glandular. The inflorescence is a solitary flower head or cluster of a few heads. The head contains up to 12 yellow ray florets up to 2.5 centimeters long with many yellow disc florets at the center.[8]

References

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wikipedia EN

Arnica dealbata: Brief Summary ( 英語 )

由wikipedia EN提供

Arnica dealbata is a species of Californian plants in the tarweed tribe within the aster family

The species is known by the common name mock leopardbane.

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wikipedia EN