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Report the species
→ Report Hymenoscyphus fraxineus to the National Museum of Natural History.
Status and distribution in Luxembourg
Hymenoscyphus fraxineus (Baral et al. 2014) is an ascomycete fungus that causes ash dieback, a chronic fungal disease of ash trees (Fraxinus excelsior) in Europe characterised by leaf loss and crown dieback in infected trees. It was first described in Japan (Zhao et al. 2012).
Hymenoscyphus fraxineus is an invasive alien species which comes from the Far East and has greatly expanded its reach throughout Central and Western Europe in recent years. Studies of herbarium material show that Hymenoscyphus fraxineus was already present in Central Europe in 1978 (Queloz et al. 2011). It is now entrenched in Europe. It is closely related to a native fungus Hymenoscyphus albidus, which is saprotrophic and also grows on the petioles of dead leaves of ash trees.
The species was first recorded on 16th June 2012 in Bois de Cessange (Municipality of Luxembourg) under its synonym Hymenoscyphus pseudoalbidus (Garnier-Delcourt et al. 2013: 35-36). It was reported in 2002 in Germany (Heydeck et al. 2005) and in 2010 in Belgium (Delhaye et al. 2010). The fungus is rapidly spreading throughout Luxembourg and in 2014 it was found in all regions of Luxembourg: a considerable number of young ash trees are affected while only a part of the elder ash trees show dieback symptoms.
ISEIA Protocol: B3 (3+3+3+1) = Watch List. First assessed 22 September 2017 by Christian Ries and Yves Krippel.
- Baral H-O, V Queloz & T Hosoya (2014) Hymenoscyphus fraxineus, the correct scientific name for the fungus causing ash dieback in Europe. IMA Fungus 5(1): 79-80.
- Garnier-Delcourt M, G Marson, Ch Reckinger, B Schultheis & M-T Tholl (2013) Notes mycologiques luxembourgeoises. VII. Bull. Soc. Nat. luxemb. 114: 35-54. (Pdf 6.5 MB)
- Heydeck P, M Bemmann, H-G Kontzog (2005) Triebsterben an Gemeiner
Esche (Fraxinus excelsior) im nordostdeutschen Tiefland. Forst und Holz 60: 505–506.
- Queloz V, C R Grünig, R Berndt, T Kowalski, T N Sieber & O Holdenrieder (2011) Cryptic speciation in Hymenoscyphus albidus. For. Path. 41: 133–142, published online 30 March 2010 – doi:10.1111/j.1439-0329.2010.00645.x
- Zhao Y-J, T Hosoya, H-O Baral, K Hosaka & M Kakishima (2012) Hymenoscyphus pseudoalbidus, the correct name for Lambertella albida reported from Japan. Mycotaxon 122: 25-41.
Suggested citation of this webpage
Ries, C. & M. Pfeiffenschneider (Eds.), 2020. Hymenoscyphus fraxineus (T. Kowalski) Baral, Queloz, Hosoya. In: neobiota.lu - Invasive Alien Species in Luxembourg. National Museum of Natural History, Luxembourg. URL: https://neobiota.lu/hymenoscyphus-fraxineus/ [Accessed 2020-01-24].