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Erysiphe celastri (Y. N. Yu & Y. Q. Lai) U. Braun & S. Takam.

Data Set Maintenance: Data set compiled and standard item. Data set author(s): Kainz C. (00-07-26). Data set reviewer(s): Schubert K. (06-03-22); revised.

Nomenclature: Current taxonomic status: accepted or basionymous. Taxonomic rank: species. Synonyms: Microsphaera celastri Y. N. Yu & Y. Q. Lai; Erysiphaceae Tul. & C. Tul.; Erysiphales.

Type Information: Basionym: Microsphaera celastri Y. N. Yu & Y. Q. Lai. Type: Microsphaera celastri Y. N. Yu & Y. Q. Lai.

Taxonomic Literature: Taxonomic notes: +ascomata outer wall cells irregularly polygonal, 12.5-15 x 7.5-12.5 µm diam.;. Braun U., Beih. Nova Hedwigia 89: 1-700 [378-380] (1987).

Biogeography: Continent: Asia-Temperate. Region(s): China (only known from the type collection).

Ecology: Biotroph; phytopathogenic; growing on leaves, amphigenous. Host or Phorophyte Taxonomy: Celastrus angulata Maxim.; Celastrus, Celastraceae.

Reproduction Strategy: With sexual (and possible asexual) stages. Ascocarps: Cleistothecioid, orbicular, forming independently from the host thallus or mycelium, scattered or gregarious, .062-.094 mm in diam.. Margin: External filaments present; recurved (when mature), (1.6)-2-2.5-(4.5) µm long, 8.8-10 µm in diameter, hyaline or pigmented (at the base), few, (3)-4-6-(10) per mm², growing between the lower and upper hald of the ascocarp, smooth, ramified, dichotomously branched (3-6 times, branchings fairly regular and close, tips recurved when mature), aseptate or septate (0-1-septate).

Asci: 3-6 asci per ascocarp, indistinctly stipitate, 44-54 µm long, 24-49 µm wide; dehiscence unitunicate.

Ascospores: c. 4 to c. 8 per ascus, spores (4)-5-6-(7) per ascus, ellipsoid or ovoid, 20-25 µm long, 10-12.5 µm wide; septa absent.

(report generated 04.Okt.2007)

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