Erysiphe staphyleae (Sawada) 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. (06-01-26); revised.

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

Type Information: Basionym: Microsphaera staphyleae Sawada. Type: Microsphaera staphyleae Sawada.

Taxonomic Literature: Taxonomic notes: +conidiophores foot-cells cylindric;+ascomata outer wall cells obscure, polygonal, ca. 10-20 µm diam.;. Braun U., Beih. Nova Hedwigia 89: 1-700 [404-405] (1987).

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

Ecology: Biotroph; phytopathogenic; growing on leaves, epiphyllous (mostly) or amphigenous. Host or Phorophyte Taxonomy: Staphylea bumalda DC.; Staphylea, Staphyleaceae.

Reproduction Strategy: With sexual (and possible asexual) stages. Ascocarps: Cleistothecioid, orbicular, forming independently from the host thallus or mycelium, scattered, .075-.1 mm in diam.. Margin: External filaments present; mycelioid or setiform (intermediary), recurved (primary branches mostly elongated, often more or less horitontally spread or somewhat recurved), 1-1.25 µm long, 5-10 µm in diameter, hyaline or pigmented (sometimes at the very base), few, 4-8 per mm², growing between the lower and upper hald of the ascocarp, stiff and straight, smooth or somewhat verrucose (below), thin or moderatly thick (towards the base), ramified, dichotomously branched (4-5 times, loosely branched, primary branches mostly elongated, often more or less horizontally spread or somewhat recurved, branchings in different planes), aseptate or septate (0-1-septate).

Asci: 2-5 asci per ascocarp, not stipitate or indistinctly stipitate, 45-55 µm long, 30-40 µm wide; dehiscence unitunicate.

Ascospores: c. 4 or c. 8 per ascus, spores 4-8 per ascus, ellipsoid or ovoid, 18-24 µm long, 9-13 µm wide; septa absent.

Conidiomata: Present; hyphomycetous.

Conidiophores: Pseudoidium-type; not branched; basal cells 17-21 µm long, 7-10 µm wide. Conidium Formation: Conidiogenous cells single. Conidia: Ellipsoid or cylindrical (rarely); macroconidial, not branched, 26-39 µm long, 16-20 µm wide; aseptate.

(report generated 04.Okt.2007)