Hymenoscyphus fraxineus (Kowalski) Baral, Queloz & Hosoya, 2014

ash dieback

on Fraxinus

parasite

Apothecia 5 mm, white, short-stalked, on black spots on the rachis of fallen leaves; ascosporen 4-5 x 16-21 µm. Bark canker, case of branch dieback and ultimately the death of the tree.

host plants

Oleaceae, monophagous

Fraxinus angustifolia, excelsior.

synonyms

Chalara fraxinea Kowalski, 2006; Hymenoscyphus pseudoalbidus Queloz, Grünig, Berndt, Kowalski, Sieber & Holdenrieder, 2010.

notes

Since the years 1990 a serious pest. Morphologically strongly resembling H. albidus, a harmless saprophyte.

references

Adamčíková, Kádasi-Horáková, Jankovský & Havrdová (2015a), Baral & Bemmann (2014a), Drenkhan, Solheim, Bogacheva, ao (2017a), Kirk & Spooner (1984a), Kozłowska, Mułenko, Anusiewicz & Wołkowycki (2019a), Kruse (2019a), Lilja, Rytkönen, Hantula, Müller, ao (2011), Savić (2020a)., Siebel, Reichgelt & Blankena (2018a), Stroheker, Queloz & Nemesio-Gorriz (2021a), van Vliet (2022a).