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Erysiphe irregularis (R. Y. Zheng & G. Q. Chen) U. Braun & S. Takam. [2007845]

Data Set Maintenance: Data set compiled and standard item. Data set author(s): Kainz C. (00-07-31). Data set reviewer(s): Schubert K. (06-03-01); revised.

Nomenclature: Current taxonomic status: accepted or basionymous. Taxonomic rank: species. Synonyms: Uncinula irregularis R. Y. Zheng & G. Q. Chen; Erysiphaceae Tul. & C. Tul.; Erysiphales.

Type Information: Basionym: Uncinula irregularis R. Y. Zheng & G. Q. Chen. Type: Uncinula irregularis R. Y. Zheng & G. Q. Chen.

Taxonomic Literature: Taxonomic notes: +ascomata outer wall cells irregularly polygonal, 7.1-20.3 µm diam.;. Braun U., Beih. Nova Hedwigia 89: 1-700 [517-518] (1987).

Biogeography: Continent: Asia-Temperate. Region(s): China (endemic).

Ecology: Biotroph; phytopathogenic; growing on leaves, amphigenous. Host or Phorophyte Taxonomy: Litsea populifolia (Hemsl.) Gamble; Litsea, Lauraceae.

Reproduction Strategy: With sexual (and possible asexual) stages. Ascocarps: Cleistothecioid, orbicular, forming independently from the host thallus or mycelium, .085-.112-(.14) mm in diam.. Margin: External filaments present (fairly irregular, usually curved, seldom substraight; length variable, width somewhat decreasing from base to top); uncinate (close to loose), circinate, or sub-helicoid, .3-1.5 µm long, (4.7)-6.2-(10.2) µm in diameter, hyaline or pigmented (brown at the very base), few or numerous, 8-21-(26) per mm², growing between the lower and upper hald of the ascocarp, sub-flexuose or geniculate (bent), smooth or verrucose, thin or moderatly thick (below, occasionally subcoalescent near the base), not ramified, septate (mostly with a single septum near the base).

Asci: 5-7 asci per ascocarp, not stipitate or indistinctly stipitate, 43.2-55.9 µm long, 33-40.5 µm wide; dehiscence unitunicate.

Ascospores: c. 8 per ascus, spores 5-7 per ascus, ellipsoid or ovoid, 15.2-20.3 µm long, 10.3-13.7 µm wide; septa absent.

(report generated 04.Okt.2007)

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