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Erysiphe nishidana (Homma) U. Braun & S. Takam. [2000038]

Data Set Maintenance: Data set compiled and standard item. Data set author(s): Kainz C. (00-07-31). Data set reviewer(s): Schubert K. (06-03-02); revised.

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

Type Information: Basionym: Uncinula nishidana Homma. Type: Uncinula nishidana Homma.

Taxonomic Literature: Taxonomic notes: +ascomata outer wall cells irregularly polygonal, obscure, ca. 10-25 µm diam.;. Braun U., Beih. Nova Hedwigia 89: 1-700 [513-515] (1987).

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

Ecology: Biotroph; phytopathogenic; growing on leaves, epiphyllous (mostly) or amphigenous. Host or Phorophyte Taxonomy: Sterculia platanifolia L.; Sterculia, Sterculiaceae.

Reproduction Strategy: With sexual (and possible asexual) stages. Ascocarps: Cleistothecioid, orbicular, forming independently from the host thallus or mycelium, in loose groups or gregarious, .08-.125 mm in diam.. Margin: External filaments present (width irregular, subequal throughout, occasionally slightly increasing or decreasing upwards, sometimes enlarged at the very base (-15 µm), hooked part not enlarged, often even narrowing towards the tip); uncinate (loose to close) or circinate, .8-1-1.2 µm long, 4-11-(15) µm in diameter, hyaline or pigmented (brown at the base), few or numerous, 6-20 per mm², growing between the lower and upper hald of the ascocarp, flexuose (straight or curved, often somewhat irregular, with slight constrictions or subnodulose) or stiff and straight, smooth, thin or moderatly thick (near the base, or thin-walled throughout; wall usually irregularly thicker), not ramified, aseptate or septate (0-1(-2)-septate).

Asci: 3-9 asci per ascocarp, not stipitate or indistinctly stipitate, 40-65 µm long, 30-50 µm wide; dehiscence unitunicate.

Ascospores: c. 4 to c. 8 per ascus, spores 4-5 per ascus, subglobose, ellipsoid, or ovoid, (14)-18-25 µm long, 10-16.5 µm wide; septa absent.

(report generated 04.Okt.2007)

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