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Erysiphe mayorii var. cicerbitae U. Braun [2001010]

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: variety. Synonyms: Golovinomyces mayorii var. cicerbitae (U. Braun) V. P. Gelyuta; Erysiphaceae Tul. & C. Tul.; Erysiphales.

Type Information: Basionym: Erysiphe mayorii var. cicerbitae U. Braun. Type: Erysiphe mayorii var. cicerbitae U. Braun.

Taxonomic Literature: Taxonomic notes: +ascocarp outer wall cells obcscure, irregularly polygonal to rounded, ca. 8-20 µm diam.;Morphologically agreeing with var. mayorii, but asci and appendages different, see below. Braun U., Beih. Nova Hedwigia 89: 1-700 [179-181] (1987); Braun, U. The powdery mildews (Erysiphales) of Europe. - 1-337. Jena, Stuttgart, New York (1995).

Biogeography: Northern hemispheric. Continent: Europe. Country or state(s): Switzerland (incl. Liechtenstein), France (excl. Corsica), Spain (incl. Andorra & Monaco), and Romania.

Ecology: Biotroph; phytopathogenic; growing on stems or leaves, amphigenous. Host or Phorophyte Taxonomy: Cicerbita alpina (L.) Wallr.; Cicerbita, Compositae.

Reproduction Strategy: With sexual (and possible asexual) stages. Ascocarps: Cleistothecioid, orbicular, forming independently from the host thallus or mycelium, scattered or gregarious, .085-.15 mm in diam.. Margin: External filaments present (often somewhat longer than in var. mayorii); interwoven with surrounding mycelium, mycelioid, straight, 3.5-6.5 µm in diameter, hyaline (at first; 2: later, yellowish to brown) or pigmented, numerous, growing all across the lower half of the ascocarp, smooth or rough, thin, not ramified or ramified, often irregular, septate.

Asci: 6-30 asci per ascocarp, not stipitate or distinctly stipitate (mostly; 1: occasionally), 45-85 µm long, 20-40 µm wide; dehiscence unitunicate.

Ascospores: c. 4 or c. 8 per ascus, spores (4)-5-6-(7) per ascus, subglobose, ellipsoid, or ovoid, (11)-15-22 µm long, (6)-8-14.5 µm wide; septa absent.

Conidiomata: Present; hyphomycetous (conidial state poorly developed).

Conidiophores: Pseudoidium-type; not branched. Conidium Formation: Conidiogenous cells single. Conidia: Doliiform or cylindrical; macroconidial, not branched, 23-35 µm long, (11)-14-21 µm wide; aseptate.

(report generated 04.Okt.2007)

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