Erysiphe alphitoides (Griffon & Maubl.) U. Braun & S. Takam.
(Oak Mildew)

Taxonomic hierarchy:
SpeciesErysiphe alphitoides (Oak Mildew)
GenusErysiphe (a genus of powdery mildews)
FamilyERYSIPHACEAE (powdery mildews)
OrderERYSIPHALES (powdery mildews)
SubclassLEOTIOMYCETIDAE (powdery mildews)
ClassLEOTIOMYCETES (a class of fungi)
SubphylumPEZIZOMYCOTINA (a subphylum of ascomycetes)
PhylumASCOMYCOTA (spore shooters, ascomycete)
KingdomFUNGI (true fungi)
DomainEukaryota (eukaryotes)
LifeBIOTA (living things)
Records of Erysiphe alphitoides (Oak Mildew) :
1: Erysiphe alphitoides (Oak Mildew)
5 Sep 2007 OSGR: SK38 53° 20’ N, 1° 30’ W Vice County: South-west Yorks (VC 63) England
mildew on sapling oak hybrid
Image 1: Infected leaf - top surface - pale backgroundImage 2: Infected leaf - top surface - pale background (2)Image 3: Infected leaf - under surface - pale backgroundImage 4: Infected leaf - under surface - pale background (2)Image 5: Infected leavesImage 6: Infected leaves (2)Image 7: Infected leaves (3)Image 8: Infected leaves - top surfaces - pale backgroundImage 9: Infected leaves - under surfaces - pale backgroundImage 10: Infected saplingImage 11: Cleistothecia - close-up - enlargedImage 12: Cleistothecia - close-up - enlarged (2)Image 13: Cleistothecia - close-up - enlarged (3)Image 14: Cleistothecia - highly enlargedImage 15: Cleistothecia - highly enlarged (2)Image 16: Cleistothecia - highly enlarged (3)Image 17: Cleistothecia - highly enlarged (4)Image 18: Cleistothecia - magnifiedImage 19: Cleistothecia - magnified (2)Image 20: Cleistothecia - magnified (3)Image 21: Cleistothecia - magnified (4)Image 22: Cleistothecia - magnified (5)Image 23: Cleistothecia - magnified (6)Image 24: Cleistothecia - magnified (7)Image 25: Cleistothecia - magnified (8)Image 26: Cleistothecia - magnified (9)Image 27: Appendages - magnifiedImage 28: Appendages - magnified (2)Image 29: Cleistothecia - microscope low magnificationImage 30: Cleistothecium and appendages - magnifiedImage 31: Cleistothecium - splitting to release ascospores - magnifiedImage 32: Cleistothecium - splitting to release ascospores - magnified (2)
2: Erysiphe alphitoides (Oak Mildew)
6 Oct 1999 OSGR: SU46 51° 20’ N, 1° 20’ W Vice County: Berks (VC 22) England
on Oak seedling
Image 1: Infected leaf - uppersideImage 2: Infected leaf - upperside - close-upImage 3: Infected leaf - undersideImage 4: Infected leaf - underside - close-upImage 5: InfectionImage 6: Infection - close-upImage 7: Infection - close-up (2)Image 8: Infection - close-up (3)Image 9: AscosporeImage 10: AscosporesImage 11: CleistotheciaImage 12: Cleistothecial appendageImage 13: Cleistothecial appendage (2)Image 14: Cleistothecial appendagesImage 15: Cleistothecial appendages and ascosporesImage 16: Cleistothecium wall

Identification Works

AuthorYearTitleSource
Forest Research 2003 Path News Issue 5: August 2003
Henricot, B. & Cook, R.T.A. 2007 New report of a powdery mildew on Wisteria in the UK New Disease Reports 15.
Ing, B. & Spooner, B. 2002 The Horse Chestnut powdery mildew Uncinula flexuosa in Europe (New British Record 210) Mycologist Vol 16 (3): 112-113.

Erysiphe alphitoides (Oak Mildew) may also be included in identification literature listed under the following higher taxa:

NBNNBN (data.nbn.org.uk) has a distribution map for Erysiphe alphitoides (Oak Mildew)
BioInfoBioInfo (www.bioinfo.org.uk) has 21 host/parasite/foodplant and/or other relationships for Erysiphe alphitoides (Oak Mildew)
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