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・ Eriodictyon trichocalyx
・ Eriogaster
・ Eriogaster arbusculae
・ Eriogaster catax
・ Eriogaster lanestris
・ Eriogonum
・ Eriogonum abertianum
・ Eriogonum alatum
・ Eriogonum alpinum
・ Eriogonum ampullaceum
・ Eriogonum angulosum
・ Eriogonum apiculatum
・ Eriogonum apricum
・ Eriogonum arborescens
・ Eriogonum argillosum
Eriogonum argophyllum
・ Eriogonum baileyi
・ Eriogonum brachyanthum
・ Eriogonum brachypodum
・ Eriogonum brandegeei
・ Eriogonum breedlovei
・ Eriogonum butterworthianum
・ Eriogonum caespitosum
・ Eriogonum callistum
・ Eriogonum cedrorum
・ Eriogonum cernuum
・ Eriogonum cinereum
・ Eriogonum cithariforme
・ Eriogonum codium
・ Eriogonum coloradense


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Eriogonum argophyllum : ウィキペディア英語版
Eriogonum argophyllum

''Eriogonum argophyllum'' is a species of wild buckwheat known by the common names Sulphur Hot Springs buckwheat, Silver Lake buckwheat, and Ruby Valley buckwheat. It is endemic to Nevada in the United States, where there is only one known population.〔(''Eriogonum argophyllum''. ) Center for Plant Conservation.〕〔(''Eriophyllum argophyllum''. ) The Nature Conservancy.〕
This rare plant is a mat-forming perennial herb growing just a few centimeters tall. It is covered in gray woolly fibers. It produces erect stems a few centimeters tall topped with rounded inflorescences no more than a centimeter wide. The flowers are yellow.〔(''Eriogonum argophyllum''. ) Flora of North America.〕 Flowering occurs in June and July,〔 sometimes until September.〔
This plant only grows in the Ruby Valley of Elko County, Nevada. It grows in the wetlands associated with hot springs, and depends on the water for survival. It grows in shallow, sandy soils covered in a crust of minerals left by the evaporation of the water.〔 Associated plants include ''Senecio canus'', ''Ivesia kingii'', ''Bromus tectorum'', ''Centaurium exaltatum'', and ''Ericameria nauseosa''.〔(''Eriogonum argophyllum''. ) Nevada Natural Heritage Program.〕
This species was a candidate for federal protection because its single population was considered threatened by geothermal development, livestock, and off-road vehicle use. These threats have been eliminated and the plant is no longer a candidate.〔 The species is protected by the state of Nevada. A fence is in place around the population to keep out livestock and vehicles.〔
==References==


抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
ウィキペディアで「Eriogonum argophyllum」の詳細全文を読む



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