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''Athyrium yokoscense'', also known as ''Hebino-negoza'' in Japanese, is a species of fern in the family ''Athyriaceae''. These tough plants live primarily in and around mine sites and thrive in soils contaminated with high concentrations of heavy metals, such as zinc, cadmium, lead, and copper. ''A. yokoscense'' is indigenous to Japan, Korea, eastern Siberia and northeastern China and has been known for centuries to tolerate phytotoxic mining sites. The predominance and concentration of this fern species at a particular region was used to identify potential mining sites. The primary potential of ''A. yokoscense'' is in its phytoremediative ability to accumulate toxic metals from soils contaminated with heavy metals, so it may have some long-term commercial importance. No medicinal or culinary values of this fern species have been studied or confirmed. ==Morphology== ''A. yokoscense'' is similar to other species in the genus, ''Athyrium'', and family, Athyriaceae. The plant typically grows to more than high and can tolerate high levels of heavy metals (arsenic, lead, cadmium, zinc, copper), which under many circumstances would kill other plants.〔 This fern leaves resemble typical fern leaves. Not many publications and research have been made on the reproductive cycle of this fern species, but it is similar to the other ferns in the same genus. According to mygarden.net.au, these ferns "grow in heavy clay soils and prefer a moist sheltered site with moderately high atmosphere". Some ferns have been reported to contain carcinogens and others contain thiaminase, which robs the body of its vitamin B. This fern is generally not edible. 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「Athyrium yokoscense」の詳細全文を読む スポンサード リンク
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