Botanische Staatssammlung München © 1995–2008
Data remain intellectual property of the data set authors.

Podosphaera volkartii (S. Blumer) U. Braun & S. Takam.

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

Nomenclature: Current taxonomic status: accepted or basionymous. Taxonomic rank: species. Synonyms: Sphaerotheca volkartii S. Blumer; Erysiphaceae Tul. & C. Tul.; Erysiphales.

Type Information: Basionym: Sphaerotheca volkartii S. Blumer.

Taxonomic Literature: Taxonomic notes: +acomata outer wall cells irregularly polygonal, 6-25 µm diam.;. Braun U., Beih. Nova Hedwigia 89: 1-700 [110] (1987).

Biogeography: Northern hemispheric. Continent: Europe. Country or state(s): Finland, United Kingdom, Sweden, Poland, Switzerland (incl. Liechtenstein), Romania, and Former Yugoslavia [incl. Bosnia and Herzegovina, Croatia, Macedonia, Moldova, Serbia and Montenegro, Slovenia].

Ecology: Biotroph; phytopathogenic; growing on leaves, hypophyllous (mycelium and conidial state scarce and inconspicuous). Host or Phorophyte Taxonomy: Dryas octopetala L.; Dryas, Rosaceae.

Reproduction Strategy: With sexual (and possible asexual) stages. Ascocarps: Cleistothecioid, orbicular, forming independently from the host thallus or mycelium, not emerging (in the dense tomentum of the host leaves), scattered or gregarious, .065-.095 mm in diam.. Margin: External filaments absent or present (very short and often rudimentary); mycelioid, straight, 4-7 µm in diameter, hyaline or faintly pigmented, few (absent or only few), thin, not ramified, aseptate (or with few septa).

Asci: 1 asci per ascocarp, globose, not stipitate, 60-90 µm long, 50-70 µm wide; dehiscence unitunicate.

Ascospores: c. 8 per ascus, spores 8 per ascus, subglobose, broadly ellipsoid, or ovoid, 16-21 µm long, 13-18 µm wide; septa absent.

Conidiomata: Present; hyphomycetous (conidial state scarce and inconspicuous).

Conidiophores: Euoidium-type.

(report generated 04.Okt.2007)

In case that additional characters and states are required to be included in this data set, consult the LIAS Instructions to Participants and follow the procedures described there.