Botanische Staatssammlung München © 1995–2008
Data remain intellectual property of the data set authors.

Erysiphe hedwigii (Lév.) U. Braun & S. Takam.

Data Set Maintenance: Data set compiled and standard item. Data set author(s): Kainz C. (00-07-27). Data set reviewer(s): Schubert K. (06-01-25); revised.

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

Type Information: Basionym: Microsphaera hedwigii Lev. Type: Microsphaera hedwigii Lev.

Taxonomic Literature: Taxonomic notes: +ascomata outer wall cells irregularly polygonal, obscure, ca. 10-20 µm diam.;. Braun U., Beih. Nova Hedwigia 89: 1-700 [418] (1987); Braun U., The powdery mildews (Erysiphales) of Europe. - 1-337. Jena, Stuttgart, New York (1995).

Biogeography: Continent: Asia-Temperate and Europe. Region(s): Siberia (and Armenia) and Caucasus. Country or state(s): United Kingdom, Austria, Benelux (Belgium & Luxembourg), former Czechoslovakia (incl. Czech Republic & Slovacia), Germany, Hungary, Netherlands, Poland, Switzerland (incl. Liechtenstein), France (excl. Corsica), Spain (incl. Andorra & Monaco), Italy (incl. San Marino & The Vatican City, excl. Sicily, Sardinia), Romania, Former Yugoslavia [incl. Bosnia and Herzegovina, Croatia, Macedonia, Moldova, Serbia and Montenegro, Slovenia], Belarus, Baltic States (Estonia, Lithuania, Latvia), and Ukraine.

Ecology: Biotroph; phytopathogenic; growing on leaves, hypophyllous (often) or amphigenous. Host or Phorophyte Taxonomy: Viburnum lantana L.; Viburnum, Caprifoliaceae.

Reproduction Strategy: With sexual (and possible asexual) stages. Ascocarps: Cleistothecioid, orbicular, forming independently from the host thallus or mycelium, scattered or in loose groups, .065-.09-(.105) mm in diam.. Margin: External filaments present (straight or mostly curved); setiform, recurved (primary branches often somewhat elongated, more or less horizontally spread, tips of the ultimate branchlets recurved), (.5)-1-1.5-(2) µm long, 7-9 µm in diameter, hyaline or pigmented (sometimes brown at the base), few, 3-8 per mm², growing between the lower and upper hald of the ascocarp, stiff and straight (or mostly curved), smooth or rough, thin, moderatly thick, or thick (towards the base, sometimes moderately thick-walled throughout), ramified, dichotomously branched (3-5 times, primary branches often somewhat elongated, more or lell horizontally spread, tips recurved), aseptate or septate (0-1-septate).

Asci: 2-4-(6) asci per ascocarp, not stipitate or indistinctly stipitate, (40)-45-55-(60) µm long, 30-45 µm wide; dehiscence unitunicate.

Ascospores: c. 4 to c. 8 per ascus, spores 4-7 per ascus, ellipsoid or ovoid, 18-26 µm long, 10-14 µm wide; septa absent.

Conidiomata: Present; hyphomycetous.

Conidiophores: Pseudoidium-type; not branched. Conidium Formation: Conidiogenous cells single. Conidia: More or less ellipsoid or ovoid; macroconidial, not branched, 25-35 µm long, 15-20 µm wide; aseptate.

(report generated 04.Okt.2007)

In case that additional characters and states are required to be included in this data set, consult the LIAS Instructions to Participants and follow the procedures described there.