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Erysiphe takamatsui Y. Nomura

Data Set Maintenance: Data set compiled and standard item. Data set author(s): Schubert K. @EXCL@ Kainz C. (06-03-20).

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

Type Information: Basionym: Erysiphe takamatsui Y. Nomura. Type: Erysiphe takamatsui Y. Nomura.

Taxonomic Literature: Taxonomic notes: + cleistothecia: cellulae peridii irregulariter angulatae, 17,5-30 × 12,5-20 µm; appendices apicem versus 2,5-3,5 µm latae, ab medio ad basim 5-7,5 µm latae, raro ad basim 7,5-10 µm latae. Nomura Y., Taxonomical study of Erysiphaceae of Japan. - 1-281 [208-209]. Tokyo (1997).

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

Ecology: Biotroph; phytopathogenic; growing on leaves, epiphyllous. Host or Phorophyte Taxonomy: Nelumbo nucifera Gaertn.; Nelumbo, Nelumbonaceae.

Reproduction Strategy: With sexual (and possible asexual) stages. Ascocarps: Cleistothecioid (fusco-brunnea), orbicular (globosa vel spheroidea), scattered or in loose groups, .078-.138 mm in diam.. Margin: External filaments present; mycelioid, straight, 62-450 µm long, (2.5)-5-7.5-(10) µm in diameter, hyaline or pigmented (prope basim sub-brunneae), growing at the ascocarp base, flexuose (curvatae, interdum ad medium magne curvatae, interdum basim versus undulatae), not ramified or ramified (ramulis brevibus protuberationi similibus), aseptate or septate ((0-)1-7-septatae).

Asci: 2-6 asci per ascocarp, not stipitate or indistinctly stipitate, 38-68 µm long, 26-63 µm wide; dehiscence unitunicate.

Ascospores: 1–2 to c. 8 per ascus, spores 2-5 per ascus, ellipsoid or ovoid, (13)-17.5-35 µm long, (7.8)-10-17.5 µm wide; septa absent.

Conidiomata: Present; hyphomycetous.

Conidiophores: Pseudoidium-type; not branched (recta, 1-septata, basim versus leviter dilatata); conidiophore cells 80-115 µm long, basal cells 50-80 µm long, 7-10 µm wide. Conidium Formation: Conidiogenous cells single. Conidia: Ellipsoid or ovoid; macroconidial, not branched, 35-46 µm long, 15-22 µm wide; aseptate.

(report generated 04.Okt.2007)

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