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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: basionymous. Taxonomic rank: species. Currently accepted name Podosphaera fusca (Fr.) U. Braun & N. Shishkoff. Erysiphaceae Tul. & C. Tul.; Erysiphales.

Type Information: Basionym: Oidium citrulli J. M. Yen & Chin C. Wang. Type: Oidium citrulli J. M. Yen & Chin C. Wang.

Taxonomic Literature: Taxonomic notes: +hyphae tortuose, hyaline, branched, septate, 6-9 µm wide; +appressoria nipple-shaped;. Braun U., Beih. Nova Hedwigia 89: 1-700 [605] (1987).

Ecology: Biotroph; phytopathogenic; growing on leaves, amphigenous (white, effuse, confluent). Host or Phorophyte Taxonomy: Citrullus vulgaris Schrad.; Citrullus, Cucurbitaceae.

Conidiophores: Euoidium-type; not branched (erect, 3-9-septate, 70-150 x 14-17 µm); basal cells 30-55 µm long, 11-14 µm wide. Conidium Formation: Conidiogenous cells in chains (3-9). Conidia: Ellipsoid, ovoid, or doliiform; macroconidial, not branched, 24-28 µm long, 16-20 µm wide; aseptate.

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