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Podosphaera stephanandrae (Jacz.) U. Braun & S. Takam.

Data Set Maintenance: Data set compiled and standard item. Data set author(s): Kainz C. Data set reviewer(s): Schubert K. (06-05-16); revised.

Nomenclature: Current taxonomic status: accepted or basionymous. Taxonomic rank: species. Synonyms: Sphaerotheca mors-uvae var. japonica E. S. Salmon; S. japonica (E. S. Salmon) Homma; Erysiphaceae Tul. & C. Tul.; Erysiphales.

Type Information: Basionym: Sphaerotheca stephanandrae Jacz.

Taxonomic Literature: Taxonomic notes: +ascocarps outer wall cells obscure, irregularly polygonal;+ascoc. ext. fil. lenght variable, shorter than the cleistoth. diam. or up to 300 µm in length;. Braun U., Beih. Nova Hedwigia 89: 1-700 [129] (1987).

Biogeography: Continent: Asia-Temperate. Region(s): China. Country or state(s): Japan.

Ecology: Biotroph; phytopathogenic; growing on leaves, hypophyllous. Host or Phorophyte Taxonomy: Stephanandra flexuosa Siebold & Zucc.; Stephanandra, Rosaceae.

Reproduction Strategy: With sexual (and possible asexual) stages. Ascocarps: Cleistothecioid, orbicular, forming independently from the host thallus or mycelium, not emerging (in the dense mycelial layer), gregarious, .075-.1 mm in diam.. Margin: External filaments present; interlaced with each other, mycelioid, straight, up to 3 µm long, hyaline or pigmented (dark brown), few, 6-9 per mm², growing all across the lower half of the ascocarp, not ramified, not branched (very rarely irregulary branched) or irregular, septate.

Asci: 1 asci per ascocarp, 45-50 µm long, 35-40 µm wide; dehiscence unitunicate.

Conidiophores: Oidium-type.

(report generated 04.Okt.2007)

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