Erysiphe ljubarskii (Golovin) U. Braun & S. Takam. var. ljubarskii [2013729]

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: variety. Erysiphaceae Tul. & C. Tul.; Erysiphales.

Type Information: Basionym: Uncinula ljubarskii Golovin var. ljubarskii. Type: Uncinula ljubarskii Golovin var. ljubarskii.

Taxonomic Literature: Taxonomic notes: +ascomata outer wall cells obscure, polygonal, ca. 5-25 µm diam.;. Braun U., Beih. Nova Hedwigia 89: 1-700 [479-481] (1987).

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

Ecology: Biotroph; phytopathogenic; growing on leaves, epiphyllous (mostly) or amphigenous. Host or Phorophyte Taxonomy: Acer pseudosieboldianum (Pax) Kom.; Acer, Aceraceae.

Reproduction Strategy: With sexual (and possible asexual) stages. Ascocarps: Cleistothecioid, orbicular, forming independently from the host thallus or mycelium, scattered or in loose groups, .085-.13-(.14) mm in diam.. Margin: External filaments present (width variable, subequal throughout or somewhat increasing upwards, but apex usually not enlarged, appendages sometimes increasing (1/2-2/3 of the stalk) and then narrowing towards the apex, appendages often collapsed in places); circinate (closely) or sub-helicoid, (1)-1.5-2-(2) µm long, 4.5-8-(11) µm in diameter, hyaline or pigmented (at the very base), numerous, (10)-20-40-(45) per mm², growing between the lower and upper hald of the ascocarp, flexuose (curved, subundulate, rarely straight and stiff), stiff and straight, or sub-geniculate (bent), smooth or rough, thin or moderatly thick (towards the base, or thin-walled throughout), not ramified, aseptate or septate (with a single septum at the base).

Asci: 5-16 asci per ascocarp, not stipitate or indistinctly stipitate, 40-65 µm long, 25-45 µm wide; dehiscence unitunicate (immature).

Ascospores: c. 4 or c. 8 per ascus, spores (4)-5-6-(7) per ascus, ellipsoid or ovoid, 16-25 µm long, 10-15 µm wide; septa absent.

Conidiomata: Present; hyphomycetous.

Conidiophores: Pseudoidium-type; not branched. Conidium Formation: Conidiogenous cells single. Conidia: Macroconidial (conidia measured in dry state), not branched, 22-27 µm long, 12-16-(18) µm wide; aseptate.

(report generated 04.Okt.2007)