Podosphaera pannosa (Wallr.) de Bary
(Rose Powdery Mildew, Peach Powdery Mildew, Rose Mildew)

Taxonomic hierarchy:
SpeciesPodosphaera pannosa (Rose Powdery Mildew, Peach Powdery Mildew, Rose Mildew)
GenusPodosphaera (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 Podosphaera pannosa (Rose Powdery Mildew, Peach Powdery Mildew, Rose Mildew) :
1: Podosphaera pannosa (Rose Powdery Mildew, Peach Powdery Mildew, Rose Mildew)
4 Jun 2005 OSGR: SU67 51° 30’ N, 1° 0’ W Vice County: Berks (VC 22) England
Conidial powdery mildew on Cherry Laurel
Image 1: Infected leafImage 2: Infected leavesImage 3: Infected shootImage 4: Infected shoot (2)Image 5: Infection - close-up - enlargedImage 6: Infection - close-up - enlarged (2)Image 7: Infection - close-up - enlarged (3)Image 8: Conidia - magnifiedImage 9: Conidia - magnified (2)Image 10: Conidiophore and conidia - magnifiedImage 11: Conidiophore and conidium - magnifiedImage 12: Conidiophore - magnifiedImage 13: Conidiophores and conidia - magnified
2: Podosphaera pannosa (Rose Powdery Mildew, Peach Powdery Mildew, Rose Mildew)
14 Apr 2005 OSGR: SZ39 50° 50’ N, 1° 30’ W Vice County: South Hants (VC 11) England
mycelial mat, with cleistothecia, on Rose stem
Image 1: Mycelial mats, the lower with embedded cleistothecia - enlargedImage 2: Mycelial mat with embedded cleistothecia - highly enlargedImage 3: Cleistothecia with mycelial mat - microscope low magnificationImage 4: Cleistothecia with mycelial mat - microscope low magnification (2)Image 5: Cleistothecia with mycelial mat - microscope low magnification (3)Image 6: Cleistothecium - magnifiedImage 7: Mycelial mat - magnified

Podosphaera pannosa (Rose Powdery Mildew, Peach Powdery Mildew, Rose Mildew) may be included in identification literature listed under the following higher taxa:

NBNNBN (data.nbn.org.uk) has a distribution map for Podosphaera pannosa (Rose Powdery Mildew, Peach Powdery Mildew, Rose Mildew)
BioInfoBioInfo (www.bioinfo.org.uk) has 40 host/parasite/foodplant and/or other relationships for Podosphaera pannosa (Rose Powdery Mildew, Peach Powdery Mildew, Rose Mildew)

A powdery mildew mainly found on Roses where it forms white to grey felty patches on leaves and stems. Cleistothecia are rarely formed.

Since the mid ’90’s it has become increasingly common on Cherry Laurel (Prunus laurocerasus), far more frequent than Podosphaeria tridactyla. [Brian Spooner, pers comm.]

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