Erysiphe wadae S. Takam. & Y. Sato

Data Set Maintenance: Data set compiled and standard item. Data set author(s): Schubert K. @EXCL@ Kainz C. (06-01-26).

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

Type Information: Basionym: Erysiphe wadae S. Takam. & Y. Sato. Type: Erysiphe wadae S. Takam. & Y. Sato.

Taxonomic Literature: Taxonomic notes: +appressoria simple lobed, single or opposite in pairs; ascomata blackish-brown; conidiophores somewhat rare, arising from the upper part or the side of mother cells, foot cells straigth or curved at the base, relatively long, followed by 2-3 cells. Takamatsu S., Sato Y., Mimuro G. & Kom-un S., Mycoscience 44: 165-171 (2003).

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

Ecology: Biotroph; phytopathogenic; growing on leaves, hypophyllous or amphigenous (rare). Host or Phorophyte Taxonomy: Fagus crenata Blume; Fagus, Fagaceae.

Reproduction Strategy: With sexual (and possible asexual) stages. Ascocarps: Cleistothecioid, orbicular, forming independently from the host thallus or mycelium, scattered, (.074)-.084-.105-(.125) mm in diam.. Margin: External filaments present (dimorph; short appendages (3-)4-10(-13) in number, substraight to sickle-shaped, (10-)13-23(-30) µm long, 5-7 µm wide, hyaline); mycelioid or setiform, circinate or sub-helicoid, (129)-153-215-(225) µm long, 4-8 µm in diameter, pigmented (dark brown at the base and gradually paler upward), numerous, (12)-18-32 per mm², growing between the lower and upper hald of the ascocarp, stiff and straight (to mildly curved, width subequal throughout, tapering towards the tip), moderatly thick or thick (at the base, gradually thinner upward), not ramified, aseptate or septate (uniseptate at the base).

Asci: (3)-4-6 asci per ascocarp, globose (ovoid, not globose), indistinctly stipitate, (40)-43-53-(55) µm long, (30)-33-37.5-(43) µm wide.

Ascospores: c. 4 or c. 8 per ascus, spores (4)-6-8 per ascus, ellipsoid, ovoid, or oblong-obtuse, (13)-15-18-(20) µm long, (8)-10-13 µm wide; septa absent; wall remaining hyaline, hyaline.

Conidiomata: Present; hyphomycetous.

Conidiophores: Pseudoidium-type; not branched; conidiophore cells 75.2-104.9 µm long, basal cells up to 89.1 µm long, 7.9-11.9 µm wide. Conidium Formation: Conidiogenous cells Polygoni-type, single. Conidia: Ellipsoid; macroconidial (usually containing large oil drops, producing germ tubes on the shoulder, germ tubes having two appressoria: multilobed appressorium at the base and simple lobed appressorium at the end of the germ tub), not branched, 19.8-23.8 µm long, 7.9-11.9 µm wide; aseptate; cell wall hyaline; without distinct fibrosin body fibrosin bodies.

(report generated 04.Okt.2007)