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Erysiphe kusanoi (Syd.) U. Braun & S. Takam. var. kusanoi [2000032]

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 kusanoi var. kusanoi Syd. Type: Uncinula kusanoi var. kusanoi Syd.

Taxonomic Literature: Taxonomic notes: +appressoria lobed;+ascomata outer wall cells conspicuous, polygonal, ca. 8-25(-30) µm diam.;. Braun U., Beih. Nova Hedwigia 89: 1-700 [496-499] (1987).

Biogeography: Continent: Asia-Temperate and Asia-Tropical. Region(s): China. Country or state(s): Japan and Taiwan; India.

Ecology: Biotroph; phytopathogenic; growing on leaves, amphigenous. Host or Phorophyte Taxonomy: Celtis sinensis Pers.; Celtis, Ulmaceae.

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 mm in diam.. Margin: External filaments present (width subequal throughout or somewhat increasing upwards, hooked part not or only slightly enlarged, ca. 6-8 µm, rarely more; oil drops in the upper part of the appendages sometimes present); circinate or sub-helicoid, .75-1.5 µm long, 4.5-7.5 µm in diameter, hyaline, few or numerous, 8-25 per mm², growing between the lower and upper hald of the ascocarp, somewhat flexuose (mostly) or stiff and straight, smooth or rough, thin or thick (towards the base), not ramified (rarely forked in the lower half) or ramified, aseptate or septate (0-1-septate).

Asci: 3-6 asci per ascocarp, indistinctly stipitate, 40-65 µm long, 30-50 µm wide; dehiscence unitunicate.

Ascospores: c. 4 or c. 8 per ascus, spores (3)-5-6-(8) per ascus, subglobose, ellipsoid, or ovoid, 18-28 µm long, 10-18 µm wide; septa absent.

Conidiomata: Present; hyphomycetous.

Conidiophores: Pseudoidium-type; not branched. Conidium Formation: Conidiogenous cells single. Conidia: Macroconidial, not branched; aseptate.

(report generated 04.Okt.2007)

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