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Erysiphe magnoliae (Sawada) U. Braun & S. Takam.

Data Set Maintenance: Data set compiled and standard item; reviewer(s): Schubert K. (06-03-24); revised.

Nomenclature: Current taxonomic status: accepted or basionymous. Taxonomic rank: species. Synonyms: Microsphaera magnoliae Sawada; Erysiphaceae Tul. & C. Tul.; Erysiphales.

Type Information: Basionym: Microsphaera magnoliae Sawada. Type: Microsphaera magnoliae Sawada.

Taxonomic Literature: Taxonomic notes: +ascomata outer wall cells irregularly polygonal to rounded, ca. 8-25 µm diam.;. Braun U., Beih. Nova Hedwigia 89: 1-700 [331-332] (1987).

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

Ecology: Biotroph; phytopathogenic; growing on leaves, amphigenous. Host or Phorophyte Taxonomy: Magnolia obovata Thunb.; Magnolia, Magnoliaceae.

Reproduction Strategy: With sexual (and possible asexual) stages. Ascocarps: Cleistothecioid, orbicular, forming independently from the host thallus or mycelium, .075-.115-(.125) mm in diam.. Margin: External filaments present; straight, 1.5-2-(2.5) µm long, 7-11 µm in diameter, hyaline or pigmented (near the base, brown), numerous, (5)-10-15-(22) per mm², growing between the lower and upper hald of the ascocarp, flexuose (sometimes) or stiff and straight (rather), thin or moderatly thick (towards the base), ramified, dichotomously branched (4-6 times, mostly rather close and regular, primary and subsequent branches short, sometimes branches of different orders elongated and branchings more diffuse, tips of the ultimate branchlets always straight, mostly very short, cylindric,pointed or subclavate, some tips elongated, branches occasionally subnodulose; +occasionally (3) trichotomous) or trichotomously branched, aseptate or septate (0-2-septate).

Asci: 3-8 asci per ascocarp, not stipitate or indistinctly stipitate, 45-60 µm long, 35-45 µm wide; dehiscence unitunicate.

Ascospores: c. 4 to c. 8 per ascus, spores 3-4-5 per ascus, ellipsoid or ovoid, 16-23 µm long, 9-14 µm wide; septa absent.

Conidiomata: Present; hyphomycetous.

Conidiophores: Pseudoidium-type; not branched. Conidium Formation: Conidiogenous cells single. Conidia: Subglobose; macroconidial, not branched, 29.6-31.2 µm long, 21.6-25.2 µm wide; aseptate.

(report generated 04.Okt.2007)

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