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Data Set Maintenance: Data set compiled and standard item. Data set author(s): Kainz C. (00-08-01). Data set reviewer(s): Schubert K. (06-07-24); revised.

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

Taxonomic Literature: Taxonomic notes: +hyphae ca. 3-5.5 µm wide, hyaline, branched, septate, +appressoria lobed;+conidiophores foot-cells cylindric, straight, curved or somewhat flexuous below, followed by 1-2 shorter cells;. Braun U., Beih. Nova Hedwigia 89: 1-700 [601] (1987).

Ecology: Biotroph; phytopathogenic; growing on leaves, amphigenous (effuse or irregular patches, white). Host or Phorophyte Taxonomy: Nyctanthes arbor-tristis L.; Nyctanthes, Oleaceae.

Conidiophores: Pseudoidium-type; not branched (erect); basal cells 50-90 µm long, 6.5-11 µm wide. Conidium Formation: Conidiogenous cells single. Conidia: Ellipsoid, ovoid, doliiform, or cylindrical; macroconidial (germ tubes at an end, terminating in an appressorium, unlobed to moderately lobed), not branched, 24-33 µm long, 13-18 µm wide; aseptate.

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