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Erysiphe hommae U. Braun

Data Set Maintenance: Data set compiled and standard item. Data set author(s): Kainz C. Data set revised @EXCL@ not revised (02-03-18).

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

Type Information: Basionym: Erysiphe hommae U. Braun.

Taxonomic Literature: Taxonomic notes: +ascocarp outer wall cells irregularly polygonal to rounded, 10-30 µm diam.;. Braun U., Beih. Nova Hedwigia 89: 1-700 [202] (1987).

Biogeography: Continent: Asia-Temperate. Region(s): Far Eastern Asia and China. Country or state(s): Japan.

Ecology: Biotroph; phytopathogenic; growing on stems, leaves, or inflorescences, amphigenous (sometimes covering the entire surface of the leaves). Host or Phorophyte Taxonomy: Labiatae.

Reproduction Strategy: With sexual (and possible asexual) stages. Ascocarps: Cleistothecioid, orbicular, forming independently from the host thallus or mycelium, scattered or in loose groups, (.07)-.085-.115-(.125) mm in diam.. Margin: External filaments present (width subequal throughout); interlaced with each other, mycelioid, .5-3-(4.5) µm long, 4.5-11 µm in diameter, hyaline or pigmented (throughout when mature, brown, sometimes brown below and paler to hyaline above), numerous, growing all across the lower half of the ascocarp, flexuose, smooth or verrucose, thin, not ramified, septate.

Asci: (3)-4-8-(10) asci per ascocarp, not stipitate or indistinctly stipitate, 40-65-(80) µm long, 30-50 µm wide; dehiscence unitunicate.

Ascospores: 1–2 to c. 4 per ascus, spores (2)-3-4-(5) per ascus, ellipsoid or ovoid, 18-26-(30) µm long, 10-16 µm wide; wall thin, remaining hyaline, hyaline, not ornamented.

Conidiomata: Present; hyphomycetous.

Conidiophores: Oidium-type; not branched. Conidium Formation: Conidiogenous cells single. Conidia: Ellipsoid or doliiform; macroconidial, (20)-25-35 µm long, 11-18 µm wide; aseptate; without distinct fibrosin body fibrosin bodies.

(report generated 04.Okt.2007)

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