Oidium buddlejae G. J. M. Gorter & Eicker

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 buddlejae G. J. M. Gorter & Eicker. Type: Oidium buddlejae G. J. M. Gorter & Eicker.

Taxonomic Literature: Taxonomic notes: +hyphae hyaline, flexuous and geniculate, 3.7-5 µm wide, hyphal cells short, 20-40 µm long; +appressoria multilobed, usually opposite and grouped together;+conidiophores foot-cells followed by 1-2 shorter cells;+haustoria more or less globose, 7-10 x 7.5-12.5 µm;. Braun U., Beih. Nova Hedwigia 89: 1-700 [601-602] (1987).

Biogeography: Continent: Africa (South Africa).

Ecology: Biotroph; phytopathogenic; growing on leaves, epiphyllous (on axial surface of the leaves, white). Host or Phorophyte Taxonomy: Buddleja salviifolia (L.) Lam.; Buddleja, Buddlejaceae.

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

Conidiomata: Present; hyphomycetous.

Conidiophores: Pseudoidium-type; not branched (62-162 x 8.5-11.5 µm, geniculate, sometimes curved, seldom straight, slightly widening from base to top); basal cells 45-85 µm long, 8.5-10 µm wide. Conidium Formation: Conidiogenous cells single. Conidia: Ellipsoid or ovoid; macroconidial (surface structure slightly helicoid grooves, germ tubes apical or subapical, straight to slightly flexuous, simple or occasionally branched, 25-65 x 2.5-3.7 µm, often ending in a thick appressorium-like hyphal point, 6.2-10 x 5-6.2 µm, conidia germinating occasionally from opposite ends), not branched, (25)-27.5-32.5-(36) µm long, (13.7)-16.2-18.7-(21.2) µm wide; aseptate.

(report generated 04.Okt.2007)