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Golovinomyces cichoracearum (DC.) V. P. Gelyuta var. cichoracearum

Data Set Maintenance: Data set compiled and standard item. Data set author(s): Kainz C. Data set reviewer(s): Schubert K. (06-03-28); revised.

Nomenclature: Current taxonomic status: accepted or basionymous. Taxonomic rank: variety. Synonyms: Erysiphe cichoracearum DC. var. cichoracearum; Erysiphaceae Tul. & C. Tul.; Erysiphales.

Type Information: Basionym: Erysiphe cichoracearum DC. var. cichoracearum. Type: Erysiphe cichoracearum DC. var. cichoracearum.

Taxonomic Literature: Taxonomic notes: +conidiophores erect, foot-cells straight or with curved basal part, cylindric, sometimes slightly attenuated (0.5-1 µm) at the basal septum, followed by 1-3 shorter cells (ca. 10-30 µm long);+appressoria nipple-shaped, sometimes with crenulate surface, rarely somewhat lobed, one appressorium per cell or opposite or several in a series;+ascomata outer wall cells irregularly shaped, ca. 8-25 µm diam., occasionally 30 µm diam.;. Braun U., Beih. Nova Hedwigia 89: 1-700 [248-252] (1987); Braun U., The powdery mildews (Erysiphales) of Europe. - 1-337. Jena, Stuttgart, New York (1995).

Biogeography: Cosmopolitan. Country or state(s): Denmark, Finland, United Kingdom, Norway, Sweden, Austria, Benelux (Belgium & Luxembourg), former Czechoslovakia (incl. Czech Republic & Slovacia), Germany, Hungary, Netherlands, Poland, Switzerland (incl. Liechtenstein), France (excl. Corsica), Portugal, Spain (incl. Andorra & Monaco), Bulgaria, Greece, Italy (incl. San Marino & The Vatican City, excl. Sicily, Sardinia), Romania, European Turkey, Former Yugoslavia [incl. Bosnia and Herzegovina, Croatia, Macedonia, Moldova, Serbia and Montenegro, Slovenia], Belarus, and Baltic States (Estonia, Lithuania, Latvia); Central Russia.

Ecology: Biotroph; phytopathogenic; growing on stems or leaves, amphigenous. Host or Phorophyte Taxonomy: Scorzonera hispanica L.; Scorzonera, Compositae.

Reproduction Strategy: With sexual (and possible asexual) stages. Ascocarps: Cleistothecioid, orbicular, forming independently from the host thallus or mycelium, scattered or gregarious, (.065)-.085-.16-(.2) mm in diam.. Margin: External filaments present (very rarely uniformly short and rudimentary); interlaced with each other (often; 3: often) or interwoven with surrounding mycelium, mycelioid, straight, .5-2-(4) µm long, (3)-4-9-(12) µm in diameter, hyaline or pigmented (later, pale to deep brown throughout, sometimes faintly coloured or brown in the basal half and paler or hyaline in the upper half), numerous, growing all across the lower half of the ascocarp or on the upper half of the ascocarp (rarely some), smooth, thin, not ramified (mostly), septate.

Asci: 5-25 asci per ascocarp, not stipitate or distinctly stipitate (mostly), (35)-50-80-(90) µm long, (20)-25-45-(55) µm wide; dehiscence unitunicate.

Ascospores: 1–2 to c. 4 per ascus, spores 2-3-(4) per ascus, subglobose, ellipsoid, or ovoid, 18-30 µm long, 11-20 µm wide; septa absent.

Conidiomata: Present; hyphomycetous.

Conidiophores: Euoidium-type; not branched; basal cells (40)-50-80-(140) µm long, 9-15 µm wide. Conidium Formation: Conidiogenous cells in chains. Conidia: Ellipsoid, ovoid, doliiform, or cylindrical; macroconidial (length and width measured on fresh material; germ tubes arising from an end, moderately long, simple, tips unlobed, slightly enlarged (club-shaped)), not branched, 25-42 µm long, 14-22 µm wide; aseptate.

(report generated 04.Okt.2007)

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