Phyllactinia guttata s. lat. (Wallr.) Lév.
(Hazel Mildew, Hazelnut Powdery Mildew)

Taxonomic hierarchy:
SpeciesPhyllactinia guttata s. lat. (Hazel Mildew, Hazelnut Powdery Mildew)
GenusPhyllactinia (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 Phyllactinia guttata s. lat. (Hazel Mildew, Hazelnut Powdery Mildew) :
1: Phyllactinia guttata s. lat. (Hazel Mildew, Hazelnut Powdery Mildew)
8 Oct 2011 OSGR: SO46 52° 20’ N, 2° 40’ W Vice County: Shrops (VC 40) England
hypophyllous cleistothecia, on Hazel leaves
Image 1: Leaf underside with cleistothecia  - enlargedImage 2: Leaf underside with cleistothecia  - enlarged (2)Image 3: Leaf underside with cleistothecia  - enlarged (3)Image 4: Cleistothecia - highly enlargedImage 5: Cleistothecia - highly enlarged (2)Image 6: Cleistothecia - highly enlarged (3)Image 7: Cleistothecia - highly enlarged (4)Image 8: Cleistothecia - highly enlarged (5)Image 9: Cleistothecia - microscope low magnificationImage 10: Cleistothecia - microscope low magnification (2)Image 11: Cleistothecia - microscope low magnification (3)Image 12: Cleistothecia - microscope low magnification (4)Image 13: Cleistothecia - microscope low magnification (5)Image 14: Cleistothecia - microscope low magnification (6)
2: Phyllactinia guttata s. lat. (Hazel Mildew, Hazelnut Powdery Mildew)
25 Oct 2009 OSGR: SU46 51° 20’ N, 1° 20’ W Vice County: North Hants (VC 12) England
on Hazel leaves, causing pale green islands
Image 1: Colony on leaf under surface - close-upImage 2: Colony on leaf under surface - close-up (2)Image 3: Colony on leaf under surface - close-up (3)Image 4: Leaf - top surface with pale green patch over colonyImage 5: Leaf - under surface with colony on pale green patchImage 6: Cleistothecia on leaf under surface - close-up - enlargedImage 7: Cleistothecia on leaf under surface - close-up - enlarged (2)Image 8: Cleistothecia on leaf under surface - close-up - enlarged (3)Image 9: Cleistothecia on leaf under surface - close-up - enlarged (4)Image 10: Cleistothecia on leaf under surface - close-up - enlarged (5)Image 11: Cleistothecia on leaf under surface - close-up - enlarged (6)Image 12: Cleistothecia - close-up - microscope low magnificationImage 13: Cleistothecia - microscope low magnificationImage 14: Cleistothecia - microscope low magnification (2)Image 15: Cleistothecium - close-up - microscope low magnificationImage 16: Short support hyphae - magnifiedImage 17: Short support hyphae - magnified (2)

Identification Works

AuthorYearTitleSource
Ing, B. & Spooner, B. 2002 The Horse Chestnut powdery mildew Uncinula flexuosa in Europe (New British Record 210) Mycologist Vol 16 (3): 112-113.
Weber, R.W.S. & Webster, J. 2001 Teaching Techniques for Mycology: 13. Functioning of cleistothecia in Phyllactinia guttata Mycologist Vol 15 (1): 26-30.

Phyllactinia guttata s. lat. (Hazel Mildew, Hazelnut Powdery Mildew) may also be included in identification literature listed under the following higher taxa:

NBNNBN (data.nbn.org.uk) has a distribution map for Phyllactinia guttata s. lat. (Hazel Mildew, Hazelnut Powdery Mildew)
BioInfoBioInfo (www.bioinfo.org.uk) has 15 host/parasite/foodplant and/or other relationships for Phyllactinia guttata s. lat. (Hazel Mildew, Hazelnut Powdery Mildew)
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