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Flaveria mcdougallii M. E. Theroux, D. J. Pinkava & D. J. Keil

Comments ( anglais )

fourni par eFloras
Flaveria mcdougallii is known only from four locations near shaded alkaline seeps and springs close to the Colorado River in the Grand Canyon of northern Arizona. Delimiting characteristics of F. mcdougallii include linear leaves with entire margins, pappi of crowns of scales, and the distribution. Morphologic character differences and experimental hybridization studies suggest that F. mcdougallii could well be assigned to a separate, monotypic genus.
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cc-by-nc-sa-3.0
droit d’auteur
Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
citation bibliographique
Flora of North America Vol. 21: 247, 250 in eFloras.org, Missouri Botanical Garden. Accessed Nov 12, 2008.
source
Flora of North America @ eFloras.org
rédacteur
Flora of North America Editorial Committee
projet
eFloras.org
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eFloras

Description ( anglais )

fourni par eFloras
Perennials or subshrubs, 50 cm (glabrous). Stems erect. Leaves sessile; blades linear to narrowly linear-lanceolate, 50–110 × 2–7 mm, bases weakly connate, margins entire. Heads 50–200+, in clusters in compound, corymbiform or paniculiform arrays. Calyculi of 0–1 linear bractlets 1–3 mm. Involucres turbinate, 3 × 0.7 mm. Phyllaries 2–6, oblong. Ray florets 0. Disc florets 2–6 (exserted conspicuously from involucres); corolla tubes 1 mm, throats funnelform, 1.5 mm. Cypselae linear, 1.5 mm; pappi coroniform (fringed scales), ca. 0.3 mm. 2n = 36.
licence
cc-by-nc-sa-3.0
droit d’auteur
Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
citation bibliographique
Flora of North America Vol. 21: 247, 250 in eFloras.org, Missouri Botanical Garden. Accessed Nov 12, 2008.
source
Flora of North America @ eFloras.org
rédacteur
Flora of North America Editorial Committee
projet
eFloras.org
original
visiter la source
site partenaire
eFloras

Flaveria mcdougallii ( anglais )

fourni par wikipedia EN

Flaveria mcdougallii is a very rare North American plant species of Flaveria within the family Asteraceae. It has been found in 4 locations in the Grand Canyon in northwestern Arizona in the southwestern United States, in Mohave County and Coconino County. Many of the populations lie inside Grand Canyon National Park, others within the Hualapai Indian Reservation.[2][3][4][5]

Flaveria mcdougallii grows primarily near alkaline springs and springs along the Colorado River. It is a hairless subshrub up to 50 cm (20 in) tall. One plant can sometimes produce 200 or more small yellow flower heads in a flat-topped cluster. Each head contains 2–6 disc flowers but no ray flowers.[3][6][7]

References

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Wikipedia authors and editors
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wikipedia EN

Flaveria mcdougallii: Brief Summary ( anglais )

fourni par wikipedia EN

Flaveria mcdougallii is a very rare North American plant species of Flaveria within the family Asteraceae. It has been found in 4 locations in the Grand Canyon in northwestern Arizona in the southwestern United States, in Mohave County and Coconino County. Many of the populations lie inside Grand Canyon National Park, others within the Hualapai Indian Reservation.

Flaveria mcdougallii grows primarily near alkaline springs and springs along the Colorado River. It is a hairless subshrub up to 50 cm (20 in) tall. One plant can sometimes produce 200 or more small yellow flower heads in a flat-topped cluster. Each head contains 2–6 disc flowers but no ray flowers.

licence
cc-by-sa-3.0
droit d’auteur
Wikipedia authors and editors
original
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site partenaire
wikipedia EN

Flaveria mcdougallii ( vietnamien )

fourni par wikipedia VI

Flaveria mcdougallii là một loài thực vật có hoa trong họ Cúc. Loài này được Theroux, Pinkava & D.J.Keil mô tả khoa học đầu tiên năm 1977.[1]

Chú thích

  1. ^ The Plant List (2010). Flaveria mcdougallii. Truy cập ngày 4 tháng 6 năm 2013.

Liên kết ngoài

 src= Wikimedia Commons có thư viện hình ảnh và phương tiện truyền tải về Flaveria mcdougallii  src= Wikispecies có thông tin sinh học về Flaveria mcdougallii


Bài viết về chủ đề Phân họ Cúc này vẫn còn sơ khai. Bạn có thể giúp Wikipedia bằng cách mở rộng nội dung để bài được hoàn chỉnh hơn.
licence
cc-by-sa-3.0
droit d’auteur
Wikipedia tác giả và biên tập viên
original
visiter la source
site partenaire
wikipedia VI

Flaveria mcdougallii: Brief Summary ( vietnamien )

fourni par wikipedia VI

Flaveria mcdougallii là một loài thực vật có hoa trong họ Cúc. Loài này được Theroux, Pinkava & D.J.Keil mô tả khoa học đầu tiên năm 1977.

licence
cc-by-sa-3.0
droit d’auteur
Wikipedia tác giả và biên tập viên
original
visiter la source
site partenaire
wikipedia VI