Erysiphe salmonii (Syd.) U. Braun & S. Takam. [2000048]

Data Set Maintenance: Data set compiled and standard item. Data set author(s): Kainz C. (00-07-28). Data set reviewer(s): Schubert K. (06-03-06); revised.

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

Type Information: Basionym: Uncinula salmonii Syd. Type: Uncinula salmonii Syd.

Taxonomic Literature: Taxonomic notes: +ascomata outer wall cells obscure, irregularly polygonal, ca. 8-20 µm diam.;. Braun U., Beih. Nova Hedwigia 89: 1-700 [494-495] (1987).

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

Ecology: Biotroph; phytopathogenic; growing on stems or leaves, epiphyllous or amphigenous (mostly). Host or Phorophyte Taxonomy: Fraxinus sieboldiana Blume; Fraxinus, Oleaceae.

Reproduction Strategy: With sexual (and possible asexual) stages. Ascocarps: Cleistothecioid, orbicular, forming independently from the host thallus or mycelium, scattered or in loose groups, .075-.125 mm in diam.. Margin: External filaments present (straight to curved, apex mostly not conspicuously enlarged, width equal towards the tip or even slightly decreasing, rarely slightly increasing; appendages in fresh samples often with oil drops); uncinate, circinate (later closely), or sub-helicoid, 1-2 µm long, 5-9.5 µm in diameter, hyaline or pigmented (basal cells yellowish to brown), numerous, 4-25 per mm², growing between the lower and upper hald of the ascocarp, flexuose or stiff and straight (relatively), smooth or rough, thin or thick (towards the base), not ramified, aseptate or septate (mostly with a single septum near the base).

Asci: 3-6 asci per ascocarp, not stipitate or indistinctly stipitate, 40-60 µm long, 30-50 µm wide; dehiscence unitunicate.

Ascospores: c. 8 per ascus, spores 6-8 per ascus, ellipsoid or ovoid, 16-21 µm long, 9.5-13 µm wide; septa absent.

(report generated 04.Okt.2007)