Oidium yenii 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. (06-07-26); revised.

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

Type Information: Basionym: Oidium yenii U. Braun. Type: Oidium yenii U. Braun.

Taxonomic Literature: Taxonomic notes: +hyphae tortuose, branched, septate, 2..5-3.6 µm wide; +appressoria minute, irregular, lobed;+conidiophores foot-cells cylindric, followed by two shorter cells;. Braun U., Beih. Nova Hedwigia 89: 1-700 [617] (1987).

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

Ecology: Biotroph; phytopathogenic; growing on leaves, amphigenous (effuse, white). Host or Phorophyte Taxonomy: Lagerstroemia subcostata Koehne; Lagerstroemia, Lythraceae.

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

Conidiomata: Present; hyphomycetous.

Conidiophores: Pseudoidium-type; not branched (erect, usually with 3 septa, 51.6-87.4 x 9.6-13.2 µm); basal cells 21.6-42.2 µm long, 5-7.2 µm wide. Conidium Formation: Conidiogenous cells single. Conidia: Ellipsoid, ovoid, or cylindrical; macroconidial (germ tubes at an end, without appressorium), not branched, 28.8-44.4 µm long, 13.2-16.8 µm wide; aseptate.

(report generated 04.Okt.2007)