Erysiphe symplocigena U. Braun & S. Takam. [2000179]

Data Set Maintenance: Data set compiled and standard item. Data set author(s): Kainz C. (00-07-26). Data set reviewer(s): Schubert K. (06-02-22); revised.

Nomenclature: Current taxonomic status: accepted or basionymous. Taxonomic rank: species. Synonyms: Erysiphe symplocicola U. Braun & S. Takam.; Erysiphaceae Tul. & C. Tul.; Erysiphales.

Type Information: Basionym: Microsphaera symploci Y. N. Yu & Y. Q. Lai. Type: Microsphaera symploci Y. N. Yu & Y. Q. Lai.

Taxonomic Literature: Taxonomic notes: +ascomata outer wall cells polygonal, 12.5-20 x 10-12.5 µm;. Braun U., Beih. Nova Hedwigia 89: 1-700 [366-367] (1987).

Biogeography: Continent: Asia-Temperate. Region(s): China (endemic).

Ecology: Biotroph; phytopathogenic; growing on leaves, amphigenous. Host or Phorophyte Taxonomy: Symplocos paniculata Miq.; Symplocos, Symplocaceae.

Reproduction Strategy: With sexual (and possible asexual) stages. Ascocarps: Cleistothecioid, orbicular, forming independently from the host thallus or mycelium, .062-.094 mm in diam.. Margin: External filaments present (straight to curved); recurved (tips of the ultimate branchlets recurved when mature), (1.4)-1.9-2.4-(3.6) µm long, 6.3-8.8 µm in diameter, hyaline or pigmented (sometimes brown at the very base), few, (3)-4-9-(18) per mm², growing between the lower and upper hald of the ascocarp, stiff and straight (to curved), smooth or rough, ramified, dichotomously branched ((2-)4-5 times, branchings fairly regular, primary branches mostly elongated, more or less horizontally spread, tips recurved when mature), aseptate or septate (seldom a single septum at the base).

Asci: 1-4 asci per ascocarp, not stipitate (subsessile) or indistinctly stipitate, 49-69 µm long, 39-54 µm wide; dehiscence unitunicate.

Ascospores: c. 4 to c. 8 per ascus, spores 4-5-7 per ascus, ellipsoid or ovoid, 16-26 µm long, 10-13 µm wide; septa absent.

(report generated 04.Okt.2007)