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Data Set Maintenance: Data set compiled and standard item. Data set author(s): Kainz C. (00-07-31). Data set reviewer(s): Schubert K. (06-04-04); revised.

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

Type Information: Basionym: Leveillula taurica f. verbasci Jacz. Type: Leveillula taurica f. verbasci Jacz.

Taxonomic Literature: Taxonomic notes: +ascomata outer wall cells indistinct, irregularly shaped, ca. 10-20 µm diam.;. Braun U., Beih. Nova Hedwigia 89: 1-700 [564] (1987); Braun U., The powdery mildews (Erysiphales) of Europe. - 1-337. Jena, Stuttgart, New York (1995).

Biogeography: Continent: Asia-Temperate (Central Asia) and Europe (southern parts, from Portugal to the Ukraine). Region(s): Caucasus. Country or state(s): Germany, Hungary, Corsica (France), France (excl. Corsica), Portugal, Spain (incl. Andorra & Monaco), Bulgaria, Italy (incl. San Marino & The Vatican City, excl. Sicily, Sardinia), Romania, European Turkey, Former Yugoslavia [incl. Bosnia and Herzegovina, Croatia, Macedonia, Moldova, Serbia and Montenegro, Slovenia], Belarus, and Ukraine; Iran (and all Central Asia).

Ecology: Biotroph; phytopathogenic; growing on leaves, amphigenous. Host or Phorophyte Taxonomy: Verbascum × neilreichii Reichardt; Verbascum, Scrophulariaceae.

Reproduction Strategy: With sexual (and possible asexual) stages. Ascocarps: Cleistothecioid, orbicular, forming independently from the host thallus or mycelium, in loose groups or gregarious, (.15)-.17-.24 mm in diam.. Margin: External filaments present (very short); mycelioid, straight, .2 µm long, 5-10 µm in diameter, hyaline or pigmented (yellowish), numerous, growing all across the lower half of the ascocarp, smooth or rough, thin, not ramified or ramified, not branched, septate.

Asci: At least 20 asci per ascocarp, distinctly stipitate, 70-100 µm long, 25-40-(50) µm wide; dehiscence unitunicate.

Ascospores: 1–2 per ascus, spores 2 per ascus, 30-40 µm long, 14-22-(26) µm wide; septa absent.

Conidiophores: Oidiopsis-type; not branched. Conidium Formation: Conidiogenous cells single. Conidia: Ellipsoid (primary as well as secondary conidia, germ tubes pigmented) or ovoid; macroconidial, not branched, 35-55 µm long, 15-26 µm wide; aseptate.

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