Golovinomyces laporteae (U. Braun) V. P. Gelyuta

Data Set Maintenance: Data set compiled and standard item. Data set author(s): Kainz C. Data set reviewer(s): Schubert K. (06-03-29); revised.

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

Type Information: Basionym: Erysiphe laporteae U. Braun. Type: Erysiphe laporteae U. Braun.

Taxonomic Literature: Taxonomic notes: +ascocarp outer wall cells irregularly polygonal, ca. 6-20 µm diam.;. Braun U., Beih. Nova Hedwigia 89: 1-700 [241] (1987).

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

Ecology: Biotroph; phytopathogenic; growing on leaves, amphigenous. Host or Phorophyte Taxonomy: Laportea bulbifera Wedd.; Laportea, Urticaceae.

Reproduction Strategy: With sexual (and possible asexual) stages. Ascocarps: Cleistothecioid, orbicular, forming independently from the host thallus or mycelium, not emerging (often, in the dense mycelial layer), in loose groups or densely gregarious, .12-.155 mm in diam.. Margin: External filaments present (usually short, not longer than the cleistothecial diam., sometimes 0.25-1.5 times as long as the cleistothecial diam.); interlaced with each other or interwoven with surrounding mycelium (the mycelium of older infections becomes brown, especially around the groups of ascocarps, the mycelium and the interwoven appendages form a dense felt, distinction between hyphae and appendages difficult), mycelioid, straight, .25-1.5 µm long, 4-9 µm in diameter, hyaline or pigmented (later, yellowish to brown), numerous, growing all across the lower half of the ascocarp, smooth or faintly rough, thin, not ramified, septate.

Asci: Dehiscence unitunicate (asci numerous).

Ascospores: 1–2 per ascus, spores 2 per ascus; septa absent.

Conidiomata: Present; hyphomycetous.

Conidiophores: Euoidium-type; not branched. Conidium Formation: Conidiogenous cells in chains. Conidia: Ellipsoid, ovoid, or doliiform; macroconidial, not branched, 25-40 µm long, 13.5-20 µm wide; aseptate.

(report generated 04.Okt.2007)