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

The description has been generated directly from a database. In cases of errors and insufficiencies consult the corresponding LIAS data entry and revision forms to make the necessary modifications. Changes will appear in the subsequent update of data entry forms and natural language descriptions. [To verify the actual status of the pages, select the reload frame function in the context menu!]
These pages are XHTML compatible designed. May be that problems arise with older web browser versions.

Data Set Maintenance: Data set compiled and standard item. Data set author(s): Kainz C. Data set reviewer(s): Schubert K. (06-01-26); revised.

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

Type Information: Basionym: Erysiphe biocellata Ehrenb. Type: Erysiphe biocellata Ehrenb.

Taxonomic Literature: Taxonomic notes: +appressoria nipple-shaped or slightly lobed, sometimes hardly developed;+conidiophores erect, foot-cells nearly cylindric, followed by 1-3 shorter cells, frequently constricted at the basal septum (ca. 5-10 µm wide), basal septum sometimes somewhat away from the branching point of the mycelium;+ascomata outer wall cells irregularly shaped, size variable, (5-)10-25(-35) µm diam.;. Braun U., Beih. Nova Hedwigia 89: 1-700 [244-245] (1987); Braun U., The powdery mildews (Erysiphales) of Europe. - 1-337. Jena, Stuttgart, New York (1995).

Biogeography: Continent: Africa, Asia-Temperate, Europe, Northern America (USA, Canada), Southern America (introduced), and Asia-Tropical. Region(s): Northern Africa, Southern Africa, Siberia, Far Eastern Asia, Middle Asia (+ Asia minor), and China. Country or state(s): Denmark, Finland, United Kingdom, Sweden, Austria, former Czechoslovakia (incl. Czech Republic & Slovacia), Germany, Hungary, Poland, Switzerland (incl. Liechtenstein), France (excl. Corsica), Portugal, Spain (incl. Andorra & Monaco), Bulgaria, Greece, 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, Baltic States (Estonia, Lithuania, Latvia), and Ukraine; Japan; India.

Ecology: Biotroph; phytopathogenic; growing on stems or leaves, amphigenous. Host or Phorophyte Taxonomy: Lycopus europaeus L.; Lycopus, Labiatae.

Reproduction Strategy: With sexual (and possible asexual) stages. Ascocarps: Cleistothecioid, orbicular, forming independently from the host thallus or mycelium, scattered or in loose groups, (.07)-.085-.15 mm in diam.. Margin: External filaments present; interlaced with each other or interwoven with surrounding mycelium (often forming a dense felt around the ascocarps), mycelioid, straight, .5-2.5 µm long, 4-9.5 µm in diameter, pigmented (more or less brown when mature), numerous, growing all across the lower half of the ascocarp, smooth or verrucose, thin, not ramified or ramified (rarely), irregular, septate.

Asci: 5-15 asci per ascocarp, distinctly stipitate, (45)-50-80-(95) µm long, 25-45-(50) µm wide; dehiscence unitunicate (the asci are usually filled with oil-drops, even when mature).

Ascospores: 1–2 to c. 8 per ascus, spores 2-3-(4) per ascus, ellipsoid or ovoid, 20-25-(30) µm long, 12-18.5 µm wide; septa absent.

Conidiophores: Euoidium-type; not branched; basal cells (30)-40-75-(80) µm long, 10-13 µm wide. Conidium Formation: Conidiogenous cells in chains. Conidia: Ellipsoid, ovoid, or doliiform; macroconidial (germ tubes apically or subapically arising, moderately long, ending in an unlobed appressorium), not branched, 25-42 µm long, 14-24 µm wide; aseptate.

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.

LIAS Home