Podosphaera erineophila Naumov

Data Set Maintenance: Data set compiled and standard item. Data set author(s): Kainz C. Data set revised.

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

Type Information: Basionym: Podosphaera erineophila Naumov in Jacz.

Taxonomic Literature: Taxonomic notes: +ascocarp outer wall cells obscure, irregularly polygonal to rounded,

ca. 6-15 µm diam. Braun U., Beih. Nova Hedwigia 89: 1-700 [151] (1987); Braun U., The powdery mildews (Erysiphales) of Europe.- 1-337. Jena, Stuttgart, New York (1995).

Biogeography: Continent: Asia-Temperate and Europe (European part of the USSR). Region(s): China (Xinjiang). Country or state(s): Belarus, Baltic States (Estonia, Lithuania, Latvia), and Ukraine.

Ecology: Biotroph; phytopathogenic; growing on galls (Erineum betulinum), hypophyllous (very inconspicuous). Host or Phorophyte Taxonomy: Betulaceae.

Reproduction Strategy: With sexual (and possible asexual) stages. Ascocarps: Cleistothecioid, orbicular, forming independently from the host thallus or mycelium, (.055)-.06-.085-(.09) mm in diam.. Margin: External filaments present (straight to curved); 1.5-2.5 µm long, 7-10 µm in diameter, hyaline or pigmented (dark brown (1/2-3/4 of the stalk), paler or hyaline above), 3-8 per mm², growing more or less between the lower and upper hald of the ascocarp or on the upper half of the ascocarp (somewhat from the), stiff and straight, moderatly thick (throughout), not ramified, septate (2-6, mostly 4 septa).

Asci: 1 asci per ascocarp, sub-globose, not stipitate, 50-70 µm long, 40-60 µm wide; dehiscence unitunicate.

Ascospores: c. 8 per ascus, spores 8 per ascus, subglobose, 13.5-20 µm long, 10-14 µm wide; septa absent.

Conidiomata: Present (poorly developed); hyphomycetous.

Conidia: Macroconidial, not branched, 18-21 µm long, 12-14 µm wide; aseptate.

(report generated 04.Okt.2007)