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Erysiphe swainsonae (Y. N. Yu & Y. Q. Lai) U. Braun & S. Takam.

Data Set Maintenance: Data set compiled and standard item; reviewer(s): Schubert K. (06-03-27); revised.

Nomenclature: Current taxonomic status: accepted. Taxonomic rank: species. Synonyms: Microsphaera swainsoniae (Y. N. Yu & Y. Q. Lai) U. Braun; Erysiphaceae Tul. & C. Tul.; Erysiphales.

Type Information: Basionym: Trichocladia swainsoniae Y. N. Yu & Y. Q. Lai. Type: Trichocladia swainsoniae Y. N. Yu & Y. Q. Lai.

Taxonomic Literature: Taxonomic notes: +ascocarp outer wall cells irregularly polygonal, ca. 7.5-20 µm diam.;. Braun U., Beih. Nova Hedwigia 89: 1-700 [306-307] (1987).

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

Ecology: Biotroph; phytopathogenic; growing on leaves, amphigenous. Host or Phorophyte Taxonomy: Swainsonia salsula (Pall.) Taub.; Swainsonia, Leguminosae-Papilionoideae.

Reproduction Strategy: With sexual (and possible asexual) stages. Ascocarps: Cleistothecioid, orbicular, forming independently from the host thallus or mycelium, scattered or in loose groups, .085-.16 mm in diam.. Margin: External filaments present (310-990 µm long, flaccid, with a tendency to turn towards one direction); interlaced with each other (loosely), recurved (only few tips slightly recurved) or straight, (3.4)-4-8-(9.7) µm long, 6.5-10 µm in diameter, hyaline or pigmented (rarely faintly brown at the base), numerous, 7-22 per mm², thin or moderatly thick (below), not ramified or ramified, dichotomously branched (1-5 times, branchings irregular, diffuse, primary branches usually long, tips of the ultimate branchlets straight or only few tips slightly recurved), aseptate or septate (1-2 septa).

Asci: 6-14 asci per ascocarp, not stipitate (subsessile, rarely) or indistinctly stipitate, 58.5-84 µm long, 33-43 µm wide; dehiscence unitunicate.

Ascospores: 1–2 to c. 8 per ascus, spores (2)-3-5-(6) per ascus, ellipsoid or ovoid, 17-25.5 µm long, 11-15 µm wide; septa absent.

Conidiomata: Present; hyphomycetous.

Conidiophores: Pseudoidium-type; not branched. Conidium Formation: Conidiogenous cells single. Conidia: Ellipsoid or doliiform; macroconidial, not branched, 24.5-40 µm long, 12.7-17.8 µm wide; aseptate.

(report generated 04.Okt.2007)

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