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Erysiphe catalpae Simonyan

Data Set Maintenance: Data set compiled and standard item. Data set author(s): Kainz C. Data set reviewer(s): Schubert K. (06-03-22); revised.

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

Type Information: Basionym: Erysiphe catalpae Simonyan. Type: Erysiphe catalpae Simonyan.

Taxonomic Literature: Taxonomic notes: +conidiophores foot-cells cylindric, followed by 1-2 cells of nearly the same length;+ascomata outer wall cells irregularly polygonal, ca. 10-25 µm diam.;. Braun U., Beih. Nova Hedwigia 89: 1-700 [210] (1987); Braun U., The powdery mildews (Erysiphales) of Europe. - 1-337. Jena, Stuttgart, New York (1995).

Biogeography: Continent: Asia-Temperate and Europe (scattered). Region(s): Far Eastern Asia (and Armenia) and Caucasus. Country or state(s): United Kingdom, former Czechoslovakia (incl. Czech Republic & Slovacia), Germany, Netherlands, Poland, France (excl. Corsica), 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.

Ecology: Biotroph; phytopathogenic; growing on leaves, amphigenous. Host or Phorophyte Taxonomy: Catalpa bignonioides L.; Catalpa, Bignoniaceae.

Reproduction Strategy: With sexual (and possible asexual) stages. Ascocarps: Cleistothecioid, orbicular, forming independently from the host thallus or mycelium, scattered or gregarious, (.07)-.09-.125-(.16) mm in diam.. Margin: External filaments present; mycelioid, straight, .5-1.5 µm long, 4.5-9.5 µm in diameter, hyaline or pigmented (later, brown, short appendages coloured throughout, longer ones brown below and paler above), few, growing all across the lower half of the ascocarp, stiff and straight (often), smooth or faintly rough, thin, not ramified or ramified, not branched, aseptate or septate (few septa).

Asci: 3-8 asci per ascocarp, not stipitate or indistinctly stipitate, 60-85 µm long, 23-38 µm wide; dehiscence unitunicate.

Ascospores: c. 4 per ascus, spores 3-5 per ascus, subglobose or ellipsoid, 17-27 µm long, 14-18 µm wide; septa absent.

Conidiomata: Present; hyphomycetous.

Conidiophores: Pseudoidium-type; not branched; basal cells 28-40 µm long, 11-14 µm wide. Conidium Formation: Conidiogenous cells single. Conidia: Ellipsoid or doliiform; macroconidial, not branched, 26-40 µm long, 14-21 µm wide; aseptate.

(report generated 04.Okt.2007)

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