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Oidium citri (W. Y. Yen) U. Braun

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. Taxonomic rank: species. Erysiphaceae Tul. & C. Tul.; Erysiphales.

Type Information: Basionym: Oidium erysiphoides f. citri W. Y. Yen. Type: Oidium erysiphoides f. citri W. Y. Yen.

Taxonomic Literature: Taxonomic notes: +hyphae tortuose, branched, septate, 3.6-9.6 µm wide; +appressoria multilobed;+conidiophores foot-cells cylindric;. Braun U., Beih. Nova Hedwigia 89: 1-700 [605] (1987).

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

Ecology: Biotroph; phytopathogenic; growing on leaves, amphigenous. Host or Phorophyte Taxonomy: Citrus poonensis; Citrus, Rutaceae.

Reproduction Strategy: Only known as sterile, asexually reproducing form.

Conidiomata: Present; hyphomycetous.

Conidiophores: Not branched (erect, 2-3-septate, 68.4-87.4 x 12-13.2 µm); basal cells 20.4-32.4 µm long, 7.2-8.4 µm wide. Conidium Formation: Conidiogenous cells single. Conidia: Ovoid or sub-cylindrical (to barrel-shaped); macroconidial (primary conidia ovoid, 30-36.6 x 15.6-18 µm, secondary conidia barrel-shaped to subcylindric, 31.2-48 x 13.2-18 µm, germ tubes apical, short to moderately long, simple, without lobed appressorium), not branched, 30-36.6 µm long, 15.6-18 µm wide; aseptate.

(report generated 04.Okt.2007)

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