Botanische Staatssammlung München © 1995–2008
Data remain intellectual property of the data set authors.

Erysiphe mayumi (Y. Nomura) U. Braun & S. Takam.

Data Set Maintenance: Data set compiled and standard item; reviewer(s): Schubert K. (06-03-24); revised.

Nomenclature: Current taxonomic status: accepted or basionymous. Taxonomic rank: species. Synonyms: Microsphaera mayumi Y. Nomura; Erysiphaceae Tul. & C. Tul.; Erysiphales.

Type Information: Basionym: Microsphaera mayumi Y. Nomura. Type: Microsphaera mayumi Y. Nomura.

Taxonomic Literature: Taxonomic notes: +conidiophores foot-cells somewhat flexuous, followed by 1-2 shorter cells;+ascomata outer wall cells irregularly polygonal, 15-17.5 x 12-16 µm;. Braun U., Beih. Nova Hedwigia 89: 1-700 [351-352] (1987).

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

Ecology: Biotroph; phytopathogenic; growing on leaves, amphigenous. Host or Phorophyte Taxonomy: Euonymus sieboldianus Blume; Euonymus, Celastraceae.

Reproduction Strategy: With sexual (and possible asexual) stages. Ascocarps: Cleistothecioid, orbicular (depressed globose), forming independently from the host thallus or mycelium, scattered or gregarious, .06-.095-(.1) mm in diam.. Margin: External filaments present (ca. 300-900(-1300) µm long); recurved, 3.5-12 µm long, 4.5-7 µm in diameter, hyaline, few or numerous, 6-16 per mm², flexuose (often irregular) or geniculate (bent), not ramified or ramified, dichotomously branched (0-3(-5) times, tips of the ultimate branchlets recurved, primary branches mostly elongated, horizontally spread or even recurved), aseptate.

Asci: (2)-3-4-(5) asci per ascocarp, broadly clavate or clavate, not stipitate (subsessile) or indistinctly stipitate, 40-50 µm long, 25-40 µm wide; dehiscence unitunicate.

Ascospores: c. 8 per ascus, spores (6)-8 per ascus, ellipsoid, ovoid, or sub-cylindrical, 13-18 µm long, 6-8-(9) µm wide; septa absent; wall pale brown (yellowish).

Conidiomata: Present; hyphomycetous.

Conidiophores: Pseudoidium-type; not branched; conidiophore cells 60-100 µm long, basal cells 6-10 µm wide. Conidium Formation: Conidiogenous cells single. Conidia: Ellipsoid; macroconidial, not branched, 37-50 µm long, 15-22 µm wide; aseptate.

(report generated 04.Okt.2007)

In case that additional characters and states are required to be included in this data set, consult the LIAS Instructions to Participants and follow the procedures described there.