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Erysiphe caprifoliacearum (U. Braun) U. Braun & S. Takam. var. caprifoliacearum

Data Set Maintenance: Data set compiled and standard item. Data set author(s): Kainz C. (00-07-27). Data set reviewer(s): Schubert K. (06-03-22); revised.

Nomenclature: Current taxonomic status: accepted or basionymous. Taxonomic rank: variety. Synonyms: Microsphaera caprifoliacearum var. caprifoliacearum U. Braun; Erysiphaceae Tul. & C. Tul.; Erysiphales.

Type Information: Basionym: Microsphaera caprifoliacearum var. caprifoliacearum U. Braun. Type: Microsphaera caprifoliacearum var. caprifoliacearum U. Braun.

Taxonomic Literature: Taxonomic notes: +ascomata outer wall cells polygonal, conspicuous, ca. 10-25 µm diam.;. Braun U., Beih. Nova Hedwigia 89: 1-700 [431-433] (1987).

Biogeography: Northern hemispheric. Continent: Northern America (USA, Canada, widespread). Country or state(s): Ontario (Canada), Wyoming (USA), Wisconsin (USA), and New York (USA). Checklist records: United States and Canada (continental).

Ecology: Biotroph; phytopathogenic; growing on leaves, epiphyllous (mostly) or amphigenous. Host or Phorophyte Taxonomy: Lonicera sp.; Lonicera, Caprifoliaceae.

Reproduction Strategy: With sexual (and possible asexual) stages. Ascocarps: Cleistothecioid, orbicular, forming independently from the host thallus or mycelium, .075-.12-(.13) mm in diam.. Margin: External filaments present; distinctly recurved, 1-2.5 µm long, 8-12 µm in diameter, hyaline or pigmented (at the very base), few or numerous, 3-20 per mm², growing between the lower and upper hald of the ascocarp, somewhat flexuose or stiff and straight, smooth or rough (occasionally below), thin, moderatly thick (throughout or thin-walled above and thick-walled towards the base), or thick, ramified, dichotomously branched (4-6 times, closely and regularly, compact, ultimate tips distinctly recurved, primary branches sometimes elongated, rarely trichotomously branched) or trichotomously branched, aseptate or septate (0-1-septate).

Asci: 3-10 asci per ascocarp, not stipitate or indistinctly stipitate, 40-70 µm long, 25-45 µm wide; dehiscence unitunicate.

Ascospores: 1–2 or c. 4 per ascus, spores 2-4-5 per ascus, subglobose, ellipsoid, or ovoid, 15-24 µm long, 8-14 µm wide; septa absent.

Conidiomata: Present; hyphomycetous.

Conidiophores: Pseudoidium-type; not branched. Conidium Formation: Conidiogenous cells single. Conidia: Ellipsoid or doliiform; macroconidial, not branched, 25-40 µm long, 14-22 µm wide; aseptate.

(report generated 04.Okt.2007)

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