Eutrema is a genus of flowering plants 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.

Species

Species accepted by the Plants of the World Online as of April 2024:

  • Eutrema altaicum (C.A.Mey.) Al-Shehbaz & Warwick
  • Eutrema angustiseptatum (Al-Shehbaz, T.Y.Cheo, L.L.Lu & G.Yang) Al-Shehbaz
  • Eutrema baimashanicum Al-Shehbaz, G.Q.Hao & J.Quan Liu
  • Eutrema botschantzevii (D.A.German) Al-Shehbaz & Warwick
  • Eutrema boufordii Al-Shehbaz
  • Eutrema bulbiferum Y.Xiao & D.K.Tian
  • Eutrema cordifolium Turcz. ex Ledeb.
  • Eutrema deltoideum (Hook.f. & Thomson) O.E.Schulz
  • Eutrema edwardsii R.Br.
  • Eutrema fontanum (Maxim.) Al-Shehbaz & Warwick
  • Eutrema giganteum G.Q.Hao, Al-Shehbaz & J.Quan Liu
  • Eutrema grandiflorum (Al-Shehbaz) Al-Shehbaz & Warwick
  • Eutrema halophilum (C.A.Mey.) Al-Shehbaz & Warwick
  • Eutrema heterophyllum (W.W.Sm.) H.Hara
  • Eutrema himalaicum Hook.f. & Thomson
  • Eutrema integrifolium (DC.) Bunge
  • Eutrema japonicum (Miq.) Koidz. – Japan; "wasabi"; common condiment
  • Eutrema lowndesii (H.Hara) Al-Shehbaz & Warwick
  • Eutrema minutissimum (O.E.Schulz) D.A.German & Al-Shehbaz
  • Eutrema nanum G.Q.Hao, J.Quan Liu & Al-Shehbaz
  • Eutrema nepalense (Al-Shehbaz, Kats.Arai & H.Ohba) Al-Shehbaz, G.Q.Hao & J.Quan Liu
  • Eutrema parviflorum Turcz. ex Ledeb.
  • Eutrema penlandii Rollins – Colorado, United States; "Mosquito Range mustard"
  • Eutrema platypetalum (Schrenk) Al-Shehbaz & Warwick
  • Eutrema pseudocordifolium Popov
  • Eutrema purii (D.S.Rawat, L.R.Dangwal & R.D.Gaur) Al-Shehbaz, G.Q.Hao & J.Quan Liu
  • Eutrema racemosum Al-Shehbaz, G.Q.Hao & J.Quan Liu
  • Eutrema renifolium (Boiss. & Hohen.) Al-Shehbaz, G.Q.Hao & J.Quan Liu
  • Eutrema salsugineum (Pall.) Al-Shehbaz & Warwick – Central Asia to North America; "saltwater cress"; extreme halophyte, model organism for salt tolerance
  • Eutrema scapiflorum (Hook.f. & Thomson) Al-Shehbaz, G.Q.Hao & J.Quan Liu
  • Eutrema schulzii Al-Shehbaz & Warwick
  • Eutrema sherriffii Al-Shehbaz & Warwick
  • Eutrema sinense (Hemsl.) G.Q.Hao, J.Quan Liu & Al-Shehbaz
  • Eutrema sulphureum (Al-Shehbaz) Al-Shehbaz
  • Eutrema tenue (Miq.) Makino – Japan; "yuriwasabi"; probably paraphyletic: some samples are closer to E. yunnanense, others closer to E. japonicum
  • Eutrema thibeticum Franch.
  • Eutrema tianshanense G.Q.Hao, J.Quan Liu & Al-Shehbaz
  • Eutrema verticillatum (Jeffrey & W.W.Sm.) Al-Shehbaz & Warwick
  • Eutrema violifolium (H.Lév.) Al-Shehbaz & Warwick
  • Eutrema watsonii (Al-Shehbaz) Al-Shehbaz
  • Eutrema wuchengyii (Al-Shehbaz, T.Y.Cheo, L.L.Lu & G.Yang) Al-Shehbaz & Warwick
  • Eutrema xingshanense (Z.E.Chao, Z.L.Ning & X.W.Hu) G.Q.Hao, Al-Shehbaz & J.Quan Liu
  • Eutrema yungshunense (W.T.Wang) Al-Shehbaz & Warwick
  • Eutrema yunnanense Franch.
  • Eutrema zhuxiense Q.L.Gan & Xin W.Li