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Erysiphe variabilis (R. Y. Zheng & G. Q. Chen) U. Braun & S. Takam. [2000055]

Data Set Maintenance: Data set compiled and standard item. Data set author(s): Kainz C. (00-07-28). Data set reviewer(s): Schubert K. (06-03-06); revised.

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

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

Taxonomic Literature: Taxonomic notes: +ascocarp outer wall cells irregularly angular, 6.3-20.3 µm diam.;. Braun U., Beih. Nova Hedwigia 89: 1-700 [469] (1987).

Biogeography: Continent: Asia-Temperate. Region(s): China (only known from the type collection).

Ecology: Biotroph; phytopathogenic; growing on leaves, hypophyllous (cleistothecia mostly) or amphigenous. Host or Phorophyte Taxonomy: Liquidambar formosana Hance; Liquidambar, Hamamelidaceae.

Reproduction Strategy: With sexual (and possible asexual) stages. Ascocarps: Cleistothecioid, orbicular, forming independently from the host thallus or mycelium, scattered or in loose groups, (.08)-.125-.19-(.25) mm in diam.. Margin: External filaments present (width variable, often increasing from base to top, but coiled part not enlarged; (6.4-)7.6-11.3(-15.3) µm wide above); circinate (or mostly spirally coiled), 1-1.5 µm long, (4.8)-6.4-7.6-(10.3) µm in diameter, hyaline or pigmented (in the lower half, brown, paler upwards, hyaline or subhyaline in the apical part), numerous, (11)-20-34-(50) per mm², growing more or less between the lower and upper hald of the ascocarp, geniculate (bent) (to undulate, usually curved, rarely substraight), rough, thin, not ramified, aseptate or septate (0-1(-5) septa).

Asci: (3)-7-18-(24) asci per ascocarp, not stipitate or indistinctly stipitate, (73.7)-83.8-97.5-(110) µm long, (35.6)-43.2-50.8-(63.5) µm wide; dehiscence unitunicate.

Ascospores: c. 8 per ascus, spores (6)-7-8 per ascus, ellipsoid (oblong-), 20-30 µm long, 12.7-16.3 µm wide; septa absent.

(report generated 04.Okt.2007)

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