Erysiphe krumbholzii U. Braun

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

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

Type Information: Basionym: Erysiphe krumbholzii U. Braun. Type: Erysiphe krumbholzii U. Braun.

Taxonomic Literature: Taxonomic notes: +ascocarp outer wall cells irregularly polygonal, 10-25.5 µm diam.;. Braun U., Beih. Nova Hedwigia 89: 1-700 [214] (1987).

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

Ecology: Biotroph; phytopathogenic; growing on leaves, amphigenous. Host or Phorophyte Taxonomy: Chrysosplenium pilosum Maxim.; Chrysosplenium, Saxifragaceae.

Reproduction Strategy: With sexual (and possible asexual) stages. Ascocarps: Cleistothecioid, orbicular, forming independently from the host thallus or mycelium, scattered or in loose groups, (.07)-.08-.115-(.12) mm in diam.. Margin: External filaments present (appendages mostly short, shorter than the cleistothecial diam., only some of them longer); mycelioid, straight, .25-3 µm long, 4-10 µm in diameter, hyaline or pigmented (sometimes, yellowish to brown below and paler upwards), few, growing all across the lower half of the ascocarp, smooth or rough, thin, not ramified, septate.

Asci: 3-6 asci per ascocarp, not stipitate or indistinctly stipitate, 45-65 µm long, 30-45 µm wide; dehiscence unitunicate.

Ascospores: c. 4 per ascus, spores 3-5 per ascus, ellipsoid or ovoid, 15-24 µm long, 10-16 µm wide; septa absent.

Conidiomata: Present; hyphomycetous.

Conidiophores: Pseudoidium-type; not branched. Conidium Formation: Conidiogenous cells single. Conidia: Ellipsoid; macroconidial, not branched; aseptate.

(report generated 04.Okt.2007)