Leveillula duriaei (Lév.) U. Braun

Data Set Maintenance: Data set compiled and standard item. Data set author(s): Kainz C. (02-09-25). Data set reviewer(s): Schubert K. (06-01-12); revised.

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

Type Information: Basionym: Erysiphe duriaei Lév. Type: Erysiphe duriaei Lév.

Taxonomic Literature: Taxonomic notes: +primary conidia broadly ellipsoid(-lanceolate), ca. 34-80 x 12-24 µm, secondary conidia ellipsoid-cylindric or somewhat irregular, apex not pointed, rounded or truncate, ca. 40-60 x 12,5-20 µm, surface of the conidia with a low net of ridges (SEM); +ascomata outer wall cells obscure, irregularly shaped, ca. 10-20 µm diam. Braun U., Beih. Nova Hedwigia 89: 1-700 [568] (1987); Braun U., The powdery mildews (Erysiphales) of Europe. - 1-337. Jena, Stuttgart, New York (1995).

Biogeography: Continent: Africa, Asia-Temperate, and Europe (southern parts, from Spain eastwards to the Ukraine). Region(s): South-western Europe, South-eastern Europe, Northern Africa, Siberia, Middle Asia, Caucasus, and China (Central Asia). Country or state(s): France (excl. Corsica), Portugal, Spain (incl. Andorra & Monaco), Bulgaria, Greece, Italy (incl. San Marino & The Vatican City, excl. Sicily, Sardinia), Romania, European Turkey, Belarus, North-western Russia, and Ukraine; Morocco; Iran, Lebanon-Syria, Israel & Palestine, and Turkey (excl. European Turkey).

Ecology: Biotroph; phytopathogenic; growing on stems or leaves, amphigenous. Host or Phorophyte Taxonomy: Phlomis herba-venti L.; Phlomis, Labiatae.

Reproduction Strategy: With sexual (and possible asexual) stages. Ascocarps: Cleistothecioid, orbicular, forming independently from the host thallus or mycelium, not emerging (often in the dense mycelial felt), scattered or gregarious (often immersed in the dense mycelial felt), .12-.28 mm in diam.. Margin: External filaments present (short); interlaced with each other or interwoven with surrounding mycelium, mycelioid, straight, hyaline or pigmented (rarely faintly coloured), numerous, growing all across the lower half of the ascocarp, smooth or rough, thin, not ramified or ramified (irregularly branched), irregular, septate.

Asci: Distinctly stipitate, 70-100 µm long, 30-40 µm wide; dehiscence unitunicate (numerous).

Ascospores: 1–2 per ascus, spores 2 per ascus, ellipsoid or ovoid, 25-40 µm long, 12.5-20 µm wide; septa absent.

Conidiomata: Present; hyphomycetous.

Conidiophores: Oidiopsis-type; not branched. Conidium Formation: Conidiogenous cells single. Conidia: Ellipsoid, broadly ellipsoid (primary conidia), or cylindrical (or somewhat irregular, surface of the conidia with a low net of ridges (to be seen by means of SEM), primary conidia usually broadly ellipsoid (-lanceolate), apicall more or less pointed, ca. 34-80 x 12-24 µm); macroconidial (dimorph; primary and secondary conidia), not branched, acuminate at one end (primary conidia), (34)-40-60-(80) µm long, (12)-12.5-20-(24) µm wide; aseptate.

(report generated 04.Okt.2007)