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Oidium pseudolongipes U. Braun & Gabler

Data Set Maintenance: Data set compiled and standard item. Data set author(s): Schubert K. @EXCL@ Kainz C. (06-07-25).

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

Type Information: Basionym: Oidium pseudolongipes U. Braun & Gabler. Type: Oidium pseudolongipes U. Braun & Gabler.

Taxonomic Literature: Taxonomic notes: +hyphae creeping, hyaline, branched, smooth, (2-)3-6(-10) µm wide; +appressoria conspicuous, nipple-shaped, solitary; +haustoria irregularly subglobose, ca 8-10 µm diam.; +conidiophores foot-cell followed by (0-)1-4 cells, following cells very short, somewhat shorter or longer, about as long as the foot-cell, rarely with a very long second cell. Gabler J. & Braun U., Arnoldia 10: 14-16 (1995).

Biogeography: Northern hemispheric. Continent: Europe. Country or state(s): Germany.

Ecology: Biotroph; phytopathogenic; growing on inflorescences (petals; mycelium effuse, arachnoid, whitish). Host or Phorophyte Taxonomy: Exacum macranthum Arn.; Exacum, Gentianaceae.

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

Conidiomata: Present; hyphomycetous.

Conidiophores: Euoidium-type; not branched (arising from creeping hyphae, erect, subcylindric, 80-450 x 9-15 µm, 1-5-septate, basal septum distinctly remote from the branching point of the hyphae (5-40 µm)); basal cells 40-160 µm long. Conidium Formation: Conidiogenous cells in chains. Conidia: Broadly ellipsoid (or guttulate), ovoid, doliiform, or citriform; macroconidial (germ tubes long, filiform, subapical), not branched, 25-35 µm long, 15-23 µm wide; aseptate; without distinct fibrosin body fibrosin bodies.

(report generated 04.Okt.2007)

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