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Erysiphe adunca var. regularis (R. Y. Zheng & G. Q. Chen) U. Braun & S. Takam. [2000006]

Data Set Maintenance: Data set compiled and standard item. Data set author(s): Kainz C. (00-07-28). Data set reviewer(s): Schubert K. (06-02-28); revised.

Nomenclature: Current taxonomic status: accepted. Taxonomic rank: variety. Synonyms: Uncinula adunca var. regularis (R. Y. Zheng & G. Q. Chen) U. Braun; Erysiphaceae Tul. & C. Tul.; Erysiphales.

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

Taxonomic Literature: Taxonomic notes: This variety differs from var. adunca by ascomata characters, see below. Braun U., Beih. Nova Hedwigia 89: 1-700 [471-474] (1987); Braun U., The powdery mildews (Erysiphales) of Europe. - 1-337. Jena, Stuttgart, New York (1995).

Biogeography: Continent: Asia-Temperate and Europe (scattered, the exact European distribution is unknown). Region(s): China. Country or state(s): Sweden, Austria, Germany, Switzerland (incl. Liechtenstein), and Italy (incl. San Marino & The Vatican City, excl. Sicily, Sardinia).

Ecology: Biotroph; phytopathogenic; growing on leaves, amphigenous. Host or Phorophyte Taxonomy: Salix wallichiana Anderss.; Salix, Salicaceae.

Reproduction Strategy: With sexual (and possible asexual) stages. Ascocarps: Cleistothecioid, orbicular, forming independently from the host thallus or mycelium, scattered or gregarious, .095-.17 mm in diam.. Margin: External filaments present (uniformly short); uncinate, circinate, or sub-helicoid, .5-1 µm long, 5-12 µm in diameter, numerous, 35-80 per mm², growing between the lower and upper hald of the ascocarp, not ramified, septate.

Asci: 5-12 asci per ascocarp, indistinctly stipitate, 50-80 µm long, 30-50 µm wide; dehiscence unitunicate.

Ascospores: c. 4 or c. 8 per ascus, spores (3)-4-5-(6) per ascus, ellipsoid or ovoid, 18-25-(27) µm long, 10-16 µm wide; septa absent.

Conidium Formation: Conidiogenous cells single. Conidia: Ellipsoid, ovoid, or cylindrical; 24-35 µm long, 12.5-18 µm wide.

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