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Erysiphe abeliae R. Y. Zheng & G. Q. Chen

Data Set Maintenance: Data set compiled and standard item. Data set author(s): Kainz C. Data set reviewer(s): Schubert K. (06-01-24); revised.

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

Type Information: Basionym: Erysiphe abeliae R.Y. Zheng & G.Q. Chen.

Taxonomic Literature: Taxonomic notes: +ascocarp outer wall cells irregularly polygonal, ca. 6-17.5 µm diam.;. Braun U., Beih. Nova Hedwigia 89: 1-700 [188-189] (1987).

Biogeography: Continent: Asia-Temperate. Region(s): China (Dabashan, Prov. Sichuan, only known from the type colection).

Ecology: Biotroph; phytopathogenic; growing on stems or leaves, amphigenous. Host or Phorophyte Taxonomy: Abelia sp.; Abelia, Caprifoliaceae.

Reproduction Strategy: With sexual (and possible asexual) stages. Ascocarps: Cleistothecioid, orbicular, forming independently from the host thallus or mycelium, scattered or gregarious (densely gregarious on stems), (.088)-.094-.119 mm in diam.. Margin: External filaments present (often substraight in the lower part and undulate-tortuous above, sometimes geniculate and strongly recurved; width subuniform); mycelioid, uncinate (generally rounded, very rarely uncinate or circinate) or circinate, (.5)-1-2-(3) µm long, (4)-4.5-5.5-(6) µm in diameter, hyaline or pigmented (subhyaline or light brown in the lower half, paler upwards), numerous, 12-37 per mm², growing all across the lower half of the ascocarp, geniculate (bent), mostly verrucose (verruculose), moderatly thick, not ramified or ramified, rarely irregular, aseptate or septate (0-1-septate).

Asci: 4-8 asci per ascocarp, indistinctly stipitate or distinctly stipitate (shortly stalked or subsessile), 40-60 µm long, 30-40-(50) µm wide; dehiscence unitunicate.

Ascospores: 1–2, c. 4, or c. 8 per ascus, spores 6-8 per ascus, ellipsoid or ovoid, 17.5-20-(25) µm long, (10)-11-14 µm wide; septa absent; wall thin, remaining hyaline, pale brown, not ornamented.

Conidiomata: Absent resp. not observed.

(report generated 04.Okt.2007)

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