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Erysiphe yaanensis (J. F. Tao & T. J. Li) U. Braun & S. Takam. [2006879]

Data Set Maintenance: Data set compiled and standard item. Data set author(s): Kainz C. (00-07-31). Data set reviewer(s): Schubert K. (06-03-06); revised.

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

Type Information: Basionym: Uncinula yaanensis J. F. Tao & T. J. Li. Type: Uncinula yaanensis J. F. Tao & T. J. Li.

Taxonomic Literature: Taxonomic notes: +ascomata outer wall cells irregularly polygonal;. Braun U., Beih. Nova Hedwigia 89: 1-700 [520] (1987).

Biogeography: Continent: Asia-Temperate. Region(s): China (only known from the type collection).

Ecology: Biotroph; phytopathogenic; growing on leaves, amphigenous. Host or Phorophyte Taxonomy: Cudrania tricuspidata (Carrière) Bureau; Cudrania, Moraceae.

Reproduction Strategy: With sexual (and possible asexual) stages. Ascocarps: Cleistothecioid, orbicular, forming independently from the host thallus or mycelium, scattered or in loose groups, .075-.116 mm in diam.. Margin: External filaments present (width equal or subequal throughout); uncinate (closely), circinate, or sub-helicoid, 1-1.5 µm long, 5-7 µm in diameter, hyaline or pigmented (brown at the base), few, 5-14 per mm², growing between the lower and upper hald of the ascocarp, flexuose or geniculate (bent) (to undulate, sometimes subnodulose, rarely substraight), smooth or somewhat rough (below), thin or thick (towards the base), not ramified, septate (usually with a single septum below).

Asci: 4-7 asci per ascocarp, not stipitate or indistinctly stipitate, 40-55 µm long, 30-40 µm wide; dehiscence unitunicate.

Ascospores: c. 4 or c. 8 per ascus, spores 3-6 per ascus, ovoid (oblong-), 17-23 µm long, 12-15 µm wide; septa absent.

(report generated 04.Okt.2007)

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