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Erysiphe abeliicola 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. (06-01-24); revised.

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

Type Information: Basionym: Microsphaera abeliae Homma. Type: Microsphaera abeliae Homma.

Taxonomic Literature: Taxonomic notes: +ascomata outer wall cells irregularly polygonal, ca. 8-20 µm diam.;. Braun U., Beih. Nova Hedwigia 89: 1-700 [367-368] (1987).

Biogeography: Continent: Asia-Temperate. Country or state(s): Japan (endemic).

Ecology: Biotroph; phytopathogenic; growing on leaves, epiphyllous. Host or Phorophyte Taxonomy: Abelia spathulata; Abelia, Caprifoliaceae.

Reproduction Strategy: With sexual (and possible asexual) stages. Ascocarps: Cleistothecioid, orbicular, forming independently from the host thallus or mycelium, scattered or in loose groups, .07-.11 mm in diam.. Margin: External filaments present (170-340 µm long); recurved (tips of the apical branches recurved when mature), 2-4 µm long, 7-8 µm in diameter, hyaline or pigmented (below), few, 5-13 per mm², growing more or less between the lower and upper hald of the ascocarp, flexuose (usually) or stiff and straight, smooth or rough, thin (throughout or somewhat thicker below) or moderatly thick, ramified, dichotomously branched (3-5 times, branchings regular and close or often looser, primary and secondary branches elongated, occasionally irregular, tips recurved when mature), aseptate or septate (0-1-septate, rarely with more septa (up to 5 according to Homma l.c.)).

Asci: 2-5 asci per ascocarp, not stipitate (mostly), 40-60 µm long, 30-45 µm wide; dehiscence unitunicate.

Ascospores: c. 4 or c. 8 per ascus, spores 5-6 per ascus, 17-25 µm long, 9.5-14 µm wide; septa absent.

Conidiomata: Present; hyphomycetous.

Conidiophores: Pseudoidium-type; not branched. Conidium Formation: Conidiogenous cells single. Conidia: Ellipsoid or cylindrical; macroconidial (length and width measured in dry state), 24-30 µm long, 11-14 µm wide; aseptate.

(report generated 04.Okt.2007)

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