Eutrema is a genus of of the family Brassicaceae, native to the Holarctic. Its best known member is wasabi, Eutrema japonicum. The name comes from the Greek εὐ- ( eu-) 'well' et τρῆμα ( trêma) 'hole', because of a hole in the septum of the fruit.[.]
It is native to subarctic and subalpine regions of Eurasia and North America and to temperate Asia.[
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Species
Species accepted by the Plants of the World Online as of April 2024:[
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Eutrema altaicum
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Eutrema angustiseptatum
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Eutrema baimashanicum
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Eutrema botschantzevii
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Eutrema boufordii
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Eutrema bulbiferum
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Eutrema cordifolium
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Eutrema deltoideum
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Eutrema edwardsii
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Eutrema fontanum
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Eutrema giganteum
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Eutrema grandiflorum
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Eutrema halophilum
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Eutrema heterophyllum
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Eutrema himalaicum
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Eutrema integrifolium
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Eutrema japonicum – Japan; "wasabi"; common condiment
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Eutrema lowndesii
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Eutrema minutissimum
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Eutrema nanum
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Eutrema nepalense
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Eutrema parviflorum
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Eutrema penlandii – Colorado, United States; "Mosquito Range mustard"
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Eutrema platypetalum
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Eutrema pseudocordifolium
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Eutrema purii
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Eutrema racemosum
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Eutrema renifolium
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Eutrema salsugineum – Central Asia to North America; "saltwater cress"; extreme halophyte, model organism for salt tolerance
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Eutrema scapiflorum
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Eutrema schulzii
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Eutrema sherriffii
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Eutrema sinense
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Eutrema sulphureum
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Eutrema tenue – Japan; "yuriwasabi"; probably paraphyletic: some samples are closer to E. yunnanense, others closer to E. japonicum
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Eutrema thibeticum
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Eutrema tianshanense
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Eutrema verticillatum
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Eutrema violifolium
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Eutrema watsonii
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Eutrema wuchengyii
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Eutrema xingshanense
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Eutrema yungshunense
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Eutrema yunnanense
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Eutrema zhuxiense
