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・ Packer House
・ Packer Memorial Chapel
・ Packer Park, Philadelphia
・ Packer Township, Carbon County, Pennsylvania
・ Packer's knot
・ Packer's National Bank Building
・ Packera
・ Packera anonyma
・ Packera antennariifolia
・ Packera aurea
・ Packera bernardina
・ Packera bolanderi
・ Packera breweri
・ Packera cana
・ Packera cardamine
Packera castoreus
・ Packera clevelandii
・ Packera eurycephala
・ Packera franciscana
・ Packera ganderi
・ Packera glabella
・ Packera greenei
・ Packera indecora
・ Packera ionophylla
・ Packera layneae
・ Packera macounii
・ Packera malmstenii
・ Packera multilobata
・ Packera musiniensis
・ Packera obovata


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Packera castoreus : ウィキペディア英語版
Packera castoreus

''Packera castoreus'' is a rare species of flowering plant in the aster family known by the common names Beaver Mountain groundsel and Beaver Mountain ragwort. It is endemic to Utah in the United States, where it occurs only in the Tushar Mountains.〔(''Packera castoreus''. ) The Nature Conservancy.〕
This small alpine plant grows just a few centimeters tall with one or more woolly stems. The lower leaves have blades one or two centimeters long with woolly undersides. The flower heads have purple-green, woolly phyllaries and no ray florets.〔(''Packera castoreus''. ) Flora of North America.〕
There are about 7 to 10 known occurrences of this plant on the high slopes of the Tushar Mountains of central Utah, mostly within the Fishlake National Forest. It occurs on Mt. Belknap and Gold Mountain, and probably other peaks. It grows on barren talus on windy, exposed mountain slopes in alpine tundra habitat above the tree line. Other plants in the sparsely vegetated habitat include sky pilot (''Polemonium viscosum''), Mt. Belknap draba (''Draba ramulosa''), and various grasses.〔
==References==


抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
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