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Neoerysiphe chelones (Schwein.) U. Braun [2000104]

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

Nomenclature: Current taxonomic status: accepted or basionymous. Taxonomic rank: species. Synonyms: Golovinomyces chelones (Schwein.) V. P. Gelyuta; Erysiphaceae Tul. & C. Tul.; Erysiphales.

Type Information: Basionym: Erysiphe chelones Schwein. Type: Erysiphe chelones Schwein.

Taxonomic Literature: Taxonomic notes: +conidiophores erect, moderately long, about 30-60 x 9.5-11 µm;+appressoria nipple-shaped to moderately lobed;+ascomata outer wall cells obscure, irregularly shaped, ca. 8-20 µm diam.;. Braun U., Beih. Nova Hedwigia 89: 1-700 [237] (1987).

Biogeography: Continent: Northern America (USA, especially eastern and southeastern states; Canada; the species occurs wherever the host (Chelone glabra) is grown for ornament).

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

Reproduction Strategy: With sexual (and possible asexual) stages. Ascocarps: Cleistothecioid, orbicular, forming independently from the host thallus or mycelium, in loose groups or gregarious, (.085)-.1-.15-(.175) mm in diam.. Margin: External filaments present; interlaced with each other or interwoven with surrounding mycelium, mycelioid, straight, .5-2 µm long, 4-7 µm in diameter, hyaline or pigmented (later, brown), few or numerous (number variable), growing all across the lower half of the ascocarp, smooth or rough, thin, not ramified, septate.

Asci: 6-15 asci per ascocarp, indistinctly stipitate, 40-75 µm long, 25-40 µm wide; dehiscence unitunicate (asci always immature in the current season, ascospores not developed before overwintering).

Conidiomata: Present; hyphomycetous.

Conidiophores: Euoidium-type; not branched. Conidium Formation: Conidiogenous cells in chains. Conidia: Ellipsoid, ovoid, or doliiform; macroconidial, not branched, 24-39 µm long, 12-19 µm wide; aseptate.

(report generated 04.Okt.2007)

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