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Erysiphe kenjiana (Homma) U. Braun & S. Takam. [2008119]

Data Set Maintenance: Data set compiled and standard item. Data set author(s): Kainz C. (00-07-28). Data set reviewer(s): Schubert K. (06-03-01); revised.

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

Type Information: Basionym: Uncinula kenjiana Homma. Type: Uncinula kenjiana Homma.

Taxonomic Literature: Taxonomic notes: +ascomata outer wall cells irregularly polygonal, ca. 10-20 µm diam.;. Braun U., Beih. Nova Hedwigia 89: 1-700 [506-507] (1987).

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

Ecology: Biotroph; phytopathogenic; growing on leaves, amphigenous. Host or Phorophyte Taxonomy: Ulmus pumila L.; Ulmus, Ulmaceae.

Reproduction Strategy: With sexual (and possible asexual) stages. Ascocarps: Cleistothecioid, orbicular, forming independently from the host thallus or mycelium, in loose groups or gregarious, .055-.11 mm in diam.. Margin: External filaments present (width increasing from base to top, apex enlarged, 9-14 µm wide, upper part spirally twisted); uncinate, .5-1.5 µm long, 4-6.5-(14) µm in diameter, hyaline, few, 7-15 per mm², growing between the lower and upper hald of the ascocarp, smooth or somewhat rough, thin or moderatly thick (towards the base), not ramified, aseptate.

Asci: (2)-3-6-(8) asci per ascocarp, not stipitate or indistinctly stipitate, 35-60 µm long, 25-55 µm wide; dehiscence unitunicate.

Ascospores: 1–2 or c. 4 per ascus, spores 2-(4) per ascus, more or less ellipsoid, 18.5-39 µm long, 12-23 µm wide; septa absent.

Conidiomata: Present; hyphomycetous.

Conidiophores: Pseudoidium-type; not branched. Conidium Formation: Conidiogenous cells single. Conidia: Ellipsoid or cylindrical; macroconidial, not branched, 23-32 µm long, 12.5-15.5 µm wide; aseptate.

(report generated 04.Okt.2007)

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