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Erysiphe pseudocedrelae (R. Y. Zheng & G. Q. Chen) U. Braun & S. Takam. [2024000]

Data Set Maintenance: Data set compiled and standard item. Data set author(s): Kainz C. (02-09-19). Data set reviewer(s): Schubert K. (06-03-06); revised.

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

Type Information: Basionym: Uncinula pseudocedrelae R. Y. Zheng & G. Q. Chen. Type: Uncinula pseudocedrelae R. Y. Zheng & G. Q. Chen.

Taxonomic Literature: Taxonomic notes: +ascomata outer wall cells irregularly polygonal, 10-23.8 µm diam.;. Braun U., Beih. Nova Hedwigia 89: 1-700 [504] (1987).

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

Ecology: Biotroph; phytopathogenic; growing on leaves, epiphyllous (mostly) or amphigenous. Host or Phorophyte Taxonomy: Populus yunnanensis Dode; Populus, Salicaceae.

Reproduction Strategy: With sexual (and possible asexual) stages. Ascocarps: Cleistothecioid, orbicular, forming independently from the host thallus or mycelium, gregarious, (.094)-.106-.131-(.138) mm in diam.. Margin: External filaments present (width increasing upwards, rarely subequal throughout); circinate or sub-helicoid, 1-1.7 µm long, 4.8-6.7-(12.5) µm in diameter, hyaline or pigmented (brown at the very base), few, (5)-9-11-(13) per mm², growing between the lower and upper hald of the ascocarp, smooth, thin or moderatly thick (towards the base), not ramified, septate (mostly with a single septum near the base).

Asci: 6-8-(11) asci per ascocarp, not stipitate or indistinctly stipitate, (46.3)-60-68.8 µm long, (33.8)-38.8-50 µm wide; dehiscence unitunicate.

Ascospores: c. 4 or c. 8 per ascus, spores (5)-6-7-(8) per ascus, ellipsoid or ovoid, (17.5)-18.8-22.5-(23.8) µm long, 11.3-15-(16.3) µm wide; septa absent.

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