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Erysiphe huayinensis R. Y. Zheng & G. Q. Chen

Data Set Maintenance: Data set compiled and standard item. Data set author(s): Kainz C. Data set reviewer(s): Schubert K. (06-01-25); revised.

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

Type Information: Basionym: Erysiphe huayinensis R. Y. Zheng & G. Q. Chen. Type: Erysiphe huayinensis R. Y. Zheng & G. Q. Chen.

Taxonomic Literature: Taxonomic notes: +ascocarp outer wall cells irregularly polygonal to rounded, ca. 8-20(-25) µm diam.;. Braun U., Beih. Nova Hedwigia 89: 1-700 [190-191] (1987).

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

Ecology: Biotroph; phytopathogenic; growing on leaves, amphigenous. Host or Phorophyte Taxonomy: Plectranthus sp.; Plectranthus, Labiatae.

Reproduction Strategy: With sexual (and possible asexual) stages. Ascocarps: Cleistothecioid, orbicular, forming independently from the host thallus or mycelium, scattered (over the whole upper surface, occasionally at the lower surface), (.07)-.075-.1-(.11) mm in diam.. Margin: External filaments present; mycelioid or setiform, straight, (.5)-1-2-(3) µm long, (3.5)-5-9-(10.5) µm in diameter, hyaline or pigmented (later in the lower half, paler or hyaline in the upper half), numerous, (6)-10-30 per mm², growing all across the lower half of the ascocarp, flexuose (curved, undulate-geniculate, rarely substraight), sub-stiff and straight, or geniculate (bent), smooth or verrucose, thin (above) or moderatly thick (towards the base, occasionally confluent near the base), not ramified or ramified, irregular (seldom), septate.

Asci: (2)-3-6-(7) asci per ascocarp, not stipitate (subsessile) or indistinctly stipitate, (40)-45-60 µm long, 30-40-(45) µm wide; dehiscence unitunicate.

Ascospores: c. 4 or c. 8 per ascus, spores (4)-5-6-(8) per ascus, subglobose, ellipsoid (or oblong), or ovoid, 15-22.5-(24) µm long, (9)-10-14-(15) µm wide; septa absent; wall thin, remaining hyaline, hyaline.

Conidiomata: Present; hyphomycetous.

Conidiophores: Pseudoidium-type; not branched. Conidium Formation: Conidiogenous cells single. Conidia: Ellipsoid, ovoid, or sub-cylindrical; macroconidial, not branched, 30-40 µm long, 14-19 µm wide; aseptate.

(report generated 04.Okt.2007)

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