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Erysiphe deutziae (Bunkina) U. Braun & S. Takam.

Data Set Maintenance: Data set compiled and standard item. Data set author(s): Kainz C. (00-07-26). Data set reviewer(s): Schubert K. (06-03-23); revised.

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

Type Information: Basionym: Microsphaera deutziae Bunkina. Type: Microsphaera deutziae Bunkina.

Taxonomic Literature: Taxonomic notes: +conidiophores foot-cells straight, cylindric, followed by 1-2 shorter cells;+appressoria lobed;+ascomata outer wall cells irregularly polygonal, ca. 8-25 µm diam.;. Braun U., Beih. Nova Hedwigia 89: 1-700 [370-371] (1987).

Biogeography: Continent: Asia-Temperate. Region(s): Far Eastern Asia. Country or state(s): Japan.

Ecology: Biotroph; phytopathogenic; growing on leaves. Host or Phorophyte Taxonomy: Deutzia amurensis (Regel) Airy Shaw; Deutzia, Hydrangeaceae.

Reproduction Strategy: With sexual (and possible asexual) stages (size variable). Ascocarps: Cleistothecioid, orbicular, forming independently from the host thallus or mycelium, scattered or gregarious, .07-.15 mm in diam.. Margin: External filaments present; recurved (later distinctly recurved, tips obtuse, clavate or acuminate) or straight, 1-3-(4) µm long, 8-11.5 µm in diameter, hyaline or pigmented (at the base), few or numerous, 4-16 per mm², growing more or less between the lower and upper hald of the ascocarp, stiff and straight (shorter ones, straight or often curved, length variable; long appendages sometimes with a slight tendency to turn towards one direction, regular or occasionally somewhat irregular, angulary bent or subnodulose-subundulate) or geniculate (bent), smooth or rough, thin or thick (towards the base), ramified, dichotomously branched (3-6 times, branchings variable, loose, somewhat irregular, often deeply cleft, primary branches long, sometimes regularly branched, close and compact, tips of the ultimate branchlets at first straight, later distinctly recurved, tips obtuse, clavate or acuminate), aseptate or septate (0-3-septate).

Asci: 2-6 asci per ascocarp, not stipitate or indistinctly stipitate, 35-55 µm long, 30-50 µm wide; dehiscence unitunicate.

Ascospores: c. 4 or c. 8 per ascus, spores 4-8 per ascus, subglobose, ellipsoid, or ovoid, 15-24 µm long, 8-15 µm wide; septa absent.

Conidiomata: Present; hyphomycetous.

Conidiophores: Pseudoidium-type; not branched; basal cells 60-90 µm long, 7-10 µm wide. Conidium Formation: Conidiogenous cells single. Conidia: Ellipsoid, ovoid, or cylindrical; macroconidial, not branched, 28-38 µm long, 14-20 µm wide; aseptate.

(report generated 04.Okt.2007)

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