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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 or basionymous. Taxonomic rank: species. Synonyms: Uncinula actinidiae Miyabe ex Jacz.; Erysiphaceae Tul. & C. Tul.; Erysiphales.

Type Information: Basionym: Uncinula actinidiae Miyabe ex Jacz. Type: Uncinula actinidiae Miyabe ex Jacz.

Taxonomic Literature: Taxonomic notes: +appressoria lobed;+ascomata outer wall cells irregularly polygonal, ca. 8-25 µm diam.;. Braun U., Beih. Nova Hedwigia 89: 1-700 [470-471] (1987).

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

Ecology: Biotroph; phytopathogenic; growing on leaves, amphigenous. Host or Phorophyte Taxonomy: Actinidia arguta; Actinidia, Actinidiaceae.

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-.12 mm in diam.. Margin: External filaments present (enlarged at the base, outline somewhat irregular, with slight constrictions or subnodulose, width subequal throughout or slightly increasing upwards, occasionally somewhat decreasing towards the tip); uncinate or circinate (mostly close, not enlarged, often even narrowed towards the tip, appendages occasionally forked in the lower half), (1)-1.5-3 µm long, 5-12 µm in diameter, hyaline or pigmented (brown in the lower part, paler or hyaline above), numerous, 4-25 per mm², growing between the lower and upper hald of the ascocarp, flexuose, stiff and straight, or geniculate (bent) (sometimes, or irregular), smooth, thin or thick (towards the base), not ramified, aseptate or septate (0-3(-5)-septate).

Asci: 3-6 asci per ascocarp, not stipitate or indistinctly stipitate, 45-65 µm long, 40-50 µm wide; dehiscence unitunicate.

Ascospores: c. 4 to c. 8 per ascus, spores 4-7 per ascus, ellipsoid or ovoid, 16-23 µm long, 9-14 µm wide; septa absent.

Conidiophores: Pseudoidium-type; not branched. Conidium Formation: Conidiogenous cells single. Conidia: Ellipsoid or cylindrical; macroconidial, not branched, 30-40 µm long, 14-18 µm wide; aseptate.

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