Erysiphe alphitoides (Griffon & Maubl.) U. Braun & S. Takam. 2000
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Details
Details
Erysiphe alphitoides (Griffon & Maubl.) U. Braun & S. Takam., Schlechtendalia 4 5 (2000)
Erysiphe alphitoides (Griffon & Maubl.) U. Braun & S. Takam. 2000
Biostatus
Nomenclature
(Griffon & Maubl.) U. Braun & S. Takam.
Griffon & Maubl.
U. Braun & S. Takam.
2000
5
ICN
species
Erysiphe alphitoides
Classification
Synonyms
Associations
View full associations recordhas host
Descriptions
Only the conidial stage of the fungus has been collected in New Zealand. Powdery mildew occurs on the english oak throughout New Zealand, especially on young trees oc on regrowth after severe pruning (Gilmour, 1966a). As oak trees are rarely grown in plantations it is of no economic importance.
Type: Powdery Mildews; Description: Mycelium superficial, moderately dense to dense, white, hyphae 3–5 μm wide; on leaves. Appressoria multi-lobed. Ascomata not known in New Zealand. Conidiophores 40–60 × 6–10 μm, foot cell straight. Conidia produced singly, barrel-shaped, 0-septate, 35–45 × 15–22 μm, smooth, hyaline.
Distribution: Northland, Auckland, Coromandel, Waikato, Bay of Plenty, Taranaki, Taupo, Wanganui, Wellington, Gisborne, Wairarapa, Nelson, North Canterbury, Mid Canterbury, South Canterbury.; 1st Record: Brien & Dingley (1951: as Oidium sp.).
Significance: Oak powdery mildew can be very damaging to nursery stock, coppice shoots, and young leaves, particularly in Quercus robur. The fungus attacks young leaves and occasionally young shoots in spring. Leaves soon become covered with a layer of white mycelium and powdery masses of conidia. In severe attacks, the leaves shrivel, turn brown, and fall. The disease is confined to young leaves. It is not important on older trees but may kill young seedlings in the nursery.; Host(s): Ailanthus altissima, Castanea crenata, C. sativa, Cotinus coggygria, Platanus ×acerifolia, P. orientalis, Quercus faginea, Q. petraea, Q. robur.
Taxonomic concepts
Erysiphe alphitoides (Griffon & Maubl.) U. Braun & S. Takam. 2000
Erysiphe alphitoides (Griffon & Maubl.) U. Braun & S. Takam. 2000
Erysiphe alphitoides (Griffon & Maubl.) U. Braun & S. Takam. 2000
Erysiphe alphitoides (Griffon & Maubl.) U. Braun & S. Takam. (2000)
Microsphaera alphitoides Griffon & Maubl. (1912)
Microsphaera alphitoides Griffon & Maubl. (1912)
Microsphaera alphitoides Griffon & Maubl. (1912)
Microsphaera alphitoides Griffon & Maubl. (1912)
Microsphaera alphitoides Griffon & Maubl. (1912)
Microsphaera alphitoides Griffon & Maubl. (1912)
Microsphaera alphitoides Griffon & Maubl. 1912
Microsphaera alphitoides Griffon & Maubl. (1912)
Microsphaera alphitoides Griffon & Maubl. 1912
Erysiphe alphitoides (Griffon & Maubl.) U. Braun & S. Takam. 2000
Microsphaera alphitoides Griffon & Maubl. (1912)
Microsphaera alphitoides Griffon & Maubl. (1912)
Microsphaera alphitoides Griffon & Maubl. (1912)
Microsphaera alphitoides Griffon & Maubl. (1912)
Microsphaera alphitoides Griffon & Maubl. (1912)
Microsphaera alphitoides Griffon & Maubl. (1912)
Microsphaera alphitoides Griffon & Maubl. (1912)
Microsphaera alphitoides Griffon & Maubl. (1912)
Microsphaera alphitoides Griffon & Maubl. (1912)
Microsphaera alphitoides Griffon & Maubl. (1912)
Microsphaera alphitoides Griffon & Maubl. 1912 var. alphitoides
Erysiphe alphitoides (Griffon & Maubl.) U. Braun & S. Takam. 2000
Microsphaera alphitoides Griffon & Maubl. var. alphitoides (1912)
Microsphaera alphitoides Griffon & Maubl. 1912 var. alphitoides
Oidium quercinum Thüm.
Erysiphe alphitoides (Griffon & Maubl.) U. Braun & S. Takam. 2000
Oidium quercinum var. gemmiparum Ferraris
Erysiphe alphitoides (Griffon & Maubl.) U. Braun & S. Takam. 2000
Global name resources
Collections
Notes
taxonomic status
ITS of one specimen indicates proximity to other Quercus, Wisteria and Sorbaria pathogens within the E. alphitoides clade.
Metadata
4fb43438-f04e-4250-9439-15324338c478
scientific name
Names_Fungi
27 February 2009
6 May 2013
