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Data Set Maintenance: Data set standard item. Data set author(s): Schubert K. @EXCL@ Kainz C. (06-03-07).

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

Type Information: Basionym: Oidium mutisiae Havryl. Type: Oidium mutisiae Havryl.

Taxonomic Literature: Taxonomic notes: + vegetative hyphae septate, branched, with thick and rough walls, 5-6 µm diam.; appressoria nipple-shaped. Havrylenko M., Mycotaxon 49: 257-267 (1993).

Ecology: Biotroph; phytopathogenic; growing on leaves, mostly hypophyllous or amphigenous (but mostly on the abaxial surface of leaves and main veins). Host or Phorophyte Taxonomy: Mutisia spinosa Ruiz & Pav.; Mutisia, Compositae.

Conidiophores: Euoidium-type (foot-cells cylindrical, slightly increasing from base to top, followed by two much shorter cells); not branched; basal cells 50-110-(160) µm long, 10-12 µm wide. Conidium Formation: Conidiogenous cells in chains. Conidia: Doliiform; macroconidial (with rough walls), not branched, 30-42 µm long, 14-20 µm wide; aseptate; without distinct fibrosin body (absent) fibrosin bodies.

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