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Erysiphe patagoniaca Havryl. & S. Takam.

Data Set Maintenance: Data set compiled and standard item. Data set author(s): Schubert K. @EXCL@ Kainz C. (06-01-30).

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

Type Information: Basionym: Erysiphe patagoniaca Havryl. & S. Takam. Type: Erysiphe patagoniaca Havryl. & S. Takam.

Taxonomic Literature: Taxonomic notes: + vegetative hyphae 3-6 µm wide; appressoria nipple-shaped or multilobed, single or opposite in pairs; conidiophores erect, foot cells straight cylindrical, followed by two cells of the same length; peridial cells of ascomata irregular in shape, mostly polygonal, 11-25 µm diam. Havrylenko M. & Takamatsu S., Mycoscience 44: 149-151 (2003).

Biogeography: Continent: Southern America (Argentina, Prov. Neuquén).

Ecology: Biotroph; phytopathogenic; growing on leaves, epiphyllous (mostly) or amphigenous. Host or Phorophyte Taxonomy: Nothofagus × antarctica Oerst.; Nothofagus, Fagaceae.

Reproduction Strategy: With sexual (and possible asexual) stages. Ascocarps: Cleistothecioid, orbicular, forming independently from the host thallus or mycelium, gregarious, .08-.1-(.12) mm in diam.. Margin: External filaments present; mycelioid or setiform (spirally twisted, at least with 15-25 coils), uncinate, 2.5-3.5 µm in diameter, hyaline, few or numerous, 8-16 per mm², growing between the lower and upper hald of the ascocarp, flexuose, smooth, not ramified, aseptate.

Asci: 8 asci per ascocarp, indistinctly stipitate, 60-69 µm long, 27-34 µm wide; dehiscence unitunicate.

Ascospores: c. 8 per ascus, spores 8 per ascus, ellipsoid, 16-21 µm long, 9-12 µm wide; septa absent; wall hyaline.

Conidiomata: Present; hyphomycetous.

Conidiophores: Pseudoidium-type; not branched. Conidium Formation: Conidiogenous cells single. Conidia: Ellipsoid or cylindrical; macroconidial (one apical germ tube with lobulated end), not branched, (12)-18-29-(30) µm long, 8-11-(12) µm wide; aseptate.

(report generated 04.Okt.2007)

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