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

Taxonomic Literature: Taxonomic notes: +hyphae more or less straight, occasionally geniculate, 3.7-7.5 µm wide, branching mostly at right angles, hyphal cells ca. 50-85 µm long; +appressoria multilobed;+conidiophores foot-cells sometimes with their basal septum 5-12 µm away from the mycelium, followed by 1-2 shorter cells;+haustoria globose, with granula and short protuberances, 7.5-10 µm diam.;. Braun U., Beih. Nova Hedwigia 89: 1-700 [599-600] (1987).

Biogeography: Continent: Africa (South Africa).

Ecology: Biotroph; phytopathogenic; growing on leaves, amphigenous (greyish-white, effuse to dense). Host or Phorophyte Taxonomy: Bauhinia galpinii N. E. Br.; Bauhinia, Leguminosae-Papilionoideae.

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

Conidiomata: Present; hyphomycetous.

Conidiophores: Pseudoidium-type; not branched (erect, straight, occasionally bent, flexuous or geniculate near the base, 40-80 x 6-10 µm, oftem slightly widening from base to top); basal cells 20-50 µm long, 6.2-7.5 µm wide. Conidium Formation: Conidiogenous cells single or in chains (seldom 2 or 3 conidia in a short chain). Conidia: Ellipsoid or ovoid; macroconidial (surface structure shows network of ridges, germ tubes subapical or sometimes apical, either very short and ending in a branched, multilobed appressorium, or very long, (170-)200-250(-340) µm), not branched, (25)-30-32.5-(45) µm long, (13.7)-17.5-21.2 µm wide; aseptate.

(report generated 04.Okt.2007)