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Erysiphe jaborosae (Seaver) U. Braun & S. Takam. [2014264]

Data Set Maintenance: Data set compiled and standard item. Data set author(s): Kainz C. (00-07-28). Data set reviewer(s): Schubert K. (06-03-01); revised.

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

Type Information: Basionym: Uncinula jaborosae Seaver. Type: Uncinula jaborosae Seaver.

Taxonomic Literature: Taxonomic notes: +ascocarp outer wall cells irregularly polygonal, ca. 10-20 µm diam.;. Braun U., Beih. Nova Hedwigia 89: 1-700 [467-468] (1987).

Biogeography: Northern hemispheric. Continent: Northern America (USA, only known from the type collection). Country or state(s): New York (USA).

Ecology: Biotroph; phytopathogenic; growing on leaves, amphigenous. Host or Phorophyte Taxonomy: Jaborosa integrifolia Lam.; Jaborosa, Solanaceae.

Reproduction Strategy: With sexual (and possible asexual) stages. Ascocarps: Cleistothecioid, orbicular, forming independently from the host thallus or mycelium, scattered or gregarious, .08-.135 mm in diam.. Margin: External filaments present (horizontally spread, appendages often collapsed in places); interlaced with each other (and with the the appendages of the surrounding ascocarps; loosely), uncinate (to spirally coiled, loosely to closely, apex not enlarged) or circinate, (2)-3-6 µm long, (3)-4-9.5 µm in diameter, hyaline or pigmented (in the lower half, yellowish to brown, paler upwards, hyaline above), numerous, 10-30 per mm², growing between the lower and upper hald of the ascocarp or somewhat on the upper half of the ascocarp (occasionally), flexuose (and long), smooth or faintly rough, thin or moderatly thick (very rarely below), not ramified, septate (about 2-12 septa, septate from the base up to the apical part).

Asci: 4-6 asci per ascocarp, not stipitate or indistinctly stipitate (shortly stalked), 40-70 µm long, 30-55 µm wide; dehiscence unitunicate.

Ascospores: c. 4 or c. 8 per ascus, spores 4-6 per ascus, ellipsoid or ovoid, 15-24 µm long, 9-15.5 µm wide; septa absent.

Conidiomata: Present; hyphomycetous.

Conidiophores: Pseudoidium-type; not branched. Conidium Formation: Conidiogenous cells single. Conidia: Ellipsoid, doliiform, or cylindrical; macroconidial, not branched, 28-36 µm long, 12-18 µm wide; aseptate.

(report generated 04.Okt.2007)

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