Erysiphe miyabeana (U. Braun) U. Braun & S. Takam.

Data Set Maintenance: Data set compiled and standard item. Data set author(s): Kainz C. (00-07-27). Data set reviewer(s): Schubert K. (06-03-24); revised.

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

Type Information: Basionym: Microsphaera miyabeana U. Braun. Type: Microsphaera miyabeana U. Braun.

Taxonomic Literature: Taxonomic notes: +ascomata outer wall cells polygonal, ca. 10-23 µm diam.;. Braun U., Beih. Nova Hedwigia 89: 1-700 [414-415] (1987).

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

Ecology: Biotroph; phytopathogenic; growing on leaves, amphigenous. Host or Phorophyte Taxonomy: Styrax japonicus Siebold & Zucc.; Styrax, Styracaceae.

Reproduction Strategy: With sexual (and possible asexual) stages. Ascocarps: Cleistothecioid, orbicular, forming independently from the host thallus or mycelium, scattered, .085-.115 mm in diam.. Margin: External filaments present; helicoid (occasionally sub-) or recurved (tips of the ultimate branchlets), .75-1.5 µm long, 7-10 µm in diameter, hyaline or faintly pigmented (at the base), few or numerous, 5-15 per mm², growing between the lower and upper hald of the ascocarp, flexuose or stiff and straight, thin or moderatly thick (towards the base), ramified, dichotomously branched (4-5 times, rather loose, primary branches often elongated, tips recurved, occasionally subhelicoid), aseptate or septate (0-1-septate).

Asci: 3-6 asci per ascocarp, indistinctly stipitate, 45-55 µm long, 35-45 µm wide; dehiscence unitunicate.

Ascospores: c. 4 or c. 8 per ascus, spores 5-6 per ascus, ellipsoid or ovoid, 18-25 µm long, 10-14 µm wide; septa absent.

(report generated 04.Okt.2007)