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Data Set Maintenance: Data set compiled and standard item. Data set author(s): Kainz C. Data set reviewer(s): Schubert K. (06-03-28); revised.

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

Type Information: Basionym: Erysiphe communis f. corydalis Golovin & Bunkina. Type: Erysiphe communis f. corydalis Golovin & Bunkina.

Taxonomic Literature: Taxonomic notes: +conidiophores foot-cells long, followed by 1-2 shorter cells;+ascocarp outer wall cells irregularly polygonal;. Braun U., Beih. Nova Hedwigia 89: 1-700 [215] (1987).

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

Ecology: Biotroph; phytopathogenic; growing on leaves, epiphyllous (cleistothecia mostly) or amphigenous. Host or Phorophyte Taxonomy: Corydalis gigantea Trautv. & Mey.; Corydalis, Papaveraceae (Fumariaceae).

Reproduction Strategy: With sexual (and possible asexual) stages. Ascocarps: Cleistothecioid, orbicular, forming independently from the host thallus or mycelium, .08-.105 mm in diam.. Margin: External filaments present; straight, 7-10 µm long, few (short and long appendages mixed), 7-10 per mm², growing all across the lower half of the ascocarp, not ramified, septate.

Asci: 4-6 asci per ascocarp, indistinctly stipitate, 35-65 µm long, 30-45 µm wide; dehiscence unitunicate.

Ascospores: c. 4 to c. 8 per ascus, spores 4-8 per ascus, 16-23 µm long, 10-11 µm wide; septa absent.

Conidiophores: Pseudoidium-type; not branched; basal cells 60-160 µm long, 7-10 µm wide. Conidium Formation: Conidiogenous cells single. Conidia: Ellipsoid or cylindrical; macroconidial, not branched, 48-63 µm long, 15-23 µm wide; aseptate.

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