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Oidium caricae-papayae W. Y. Yen

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.

Type Information: Basionym: Oidium caricae-papayae W. Y. Yen. Type: Oidium caricae-papayae W. Y. Yen.

Taxonomic Literature: Taxonomic notes: +hyphae septate, branched, 4.8-8.6 µm wide, rarely up to 13 µm; +appressoria lobed;+conidiophores foot-cells cylindric;. Braun U., Beih. Nova Hedwigia 89: 1-700 [602-603] (1987).

Biogeography: Continent: Asia-Temperate and Asia-Tropical. Country or state(s): Taiwan; India.

Ecology: Biotroph; phytopathogenic; growing on leaves, amphigenous (white, effuse, confluent). Host or Phorophyte Taxonomy: Carica papaya L.; Carica, Caricaceae.

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

Conidiomata: Present; hyphomycetous.

Conidiophores: Euoidium-type; not branched (103-206 x 13.2-18 µm (with conidia)); basal cells 36-55.2 µm long, 8.4-12 µm wide. Conidium Formation: Conidiogenous cells in chains (3-9). Conidia: Ellipsoid, ovoid, doliiform, or cylindrical; macroconidial (germ tubes apical or subapical, moderately long, ending in an unlobed appressorium or without appressorium), not branched, 30-50 µm long, 14-21-(24) µm wide; aseptate.

(report generated 04.Okt.2007)

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