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Erysiphe gorlenkoi (F. T. Chien) U. Braun & S. Takam.

Data Set Maintenance: Data set compiled and standard item. Data set author(s): Kainz C. (03-01-16). Data set not revised.

Nomenclature: Current taxonomic status: accepted. Taxonomic rank: species. Synonyms: Microsphaera gorlenkoi Fan Tyk Chen; Erysiphaceae Tul. & C. Tul.; Erysiphales.

Taxonomic Literature: Taxonomic notes: +appressoria nipple-shaped to usually lobed;
+ascomata outer wall
cells irregularly polygonal, ca. 10-25 µm diam.;
+ host plant
family: Thymelaeaceae.
Braun U., The powdery mildews (Erysiphales) of Europe. - 1-337. Jena, Stuttgart, New York (1995).

Biogeography: Continent: Europe. Region(s): East Europe. Country or state(s): Belarus, Baltic States (Estonia, Lithuania, Latvia), and Ukraine.

Ecology: Growing on leaves, amphigenous.

Reproduction Strategy: With sexual (and possible asexual) stages. Ascocarps: Cleistothecioid, scattered or in loose groups, .11-.14 mm in diam.. Margin: External filaments present; 1 µm long, 7-10 µm in diameter, hyaline, 10-22 per mm², growing between the lower and upper hald of the ascocarp, smooth, thin or moderatly thick (towards the base), ramified, dichotomously branched (closely and regularly, 3-5(-6?) times, tips of the ultimate branchlets recurved when fully mature), aseptate or septate (occasionally with a single septum at the base).

Asci: 5-9 asci per ascocarp, not stipitate or indistinctly stipitate, 45-60 µm long, 20-40 µm wide; dehiscence unitunicate.

Ascospores: c. 4 to c. 8 per ascus, spores 6-8 per ascus, ellipsoid or ovoid, 14-21 µm long, 8-12 µm wide.

Conidiomata: Present; hyphomycetous.

Conidiophores: Pseudoidium-type. Conidium Formation: Conidiogenous cells single. Conidia: Ellipsoid or cylindrical; (25)-30-40 µm long, (10)-12.5-18 µm wide.

(report generated 04.Okt.2007)

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