Golovinomyces echinopis (U. Braun) V. P. Gelyuta

Data Set Maintenance: Data set compiled and standard item. Data set author(s): Kainz C. (00-07-21). Data set reviewer(s): Schubert K. (06-03-28); not revised (00-08-31).

Nomenclature: Current taxonomic status: accepted or basionymous. Taxonomic rank: species. Synonyms: Erysiphe echinopis U. Braun; Erysiphaceae Tul. & C. Tul.; Erysiphales.

Type Information: Basionym: Erysiphe echinopis U. Braun. Type: Erysiphe echinopis U. Braun.

Taxonomic Literature: Taxonomic notes: +conidiophores erect, foot-cells straight, width increasing from base to top, followed by a longer second cell, ca. 100-170 µm, and a third cell of about 40-100 µm, third cell often followed by 1-2 short cells of about 20-30 µm in length, the position of the described second and third cells may be exchanged, very rarely a very long foot-cell followed by some shorter cells;+appressoria nipple-shaped;+ascocarp outer wall cells obscure, irregularly shaped, 8-20 µm diam.;. Braun U., Beih. Nova Hedwigia 89: 1-700 [264] (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): United Kingdom, Norway, Germany, Hungary, Poland, Switzerland (incl. Liechtenstein), France (excl. Corsica), Spain (incl. Andorra & Monaco), Bulgaria, Italy (incl. San Marino & The Vatican City, excl. Sicily, Sardinia), Romania, Former Yugoslavia [incl. Bosnia and Herzegovina, Croatia, Macedonia, Moldova, Serbia and Montenegro, Slovenia], Belarus, Baltic States (Estonia, Lithuania, Latvia), and Ukraine.

Ecology: Biotroph; phytopathogenic; growing on leaves, amphigenous. Host or Phorophyte Taxonomy: Echinops sphaerocephalus L.; Echinops, Compositae.

Reproduction Strategy: With sexual (and possible asexual) stages. Ascocarps: Cleistothecioid, orbicular, forming independently from the host thallus or mycelium, scattered or in loose groups, .12-.18 mm in diam.. Margin: External filaments present (length variable, mostly rather short); interlaced with each other or interwoven with surrounding mycelium (seperation between appendages and mycelium difficult), mycelioid, straight, .25-2 µm long, 3.4-9 µm in diameter, hyaline or faintly pigmented, numerous, growing all across the lower half of the ascocarp, smooth, thin, not ramified (usually), septate.

Asci: 6-18 asci per ascocarp, distinctly stipitate, 65-110 µm long, 30-60 µm wide; dehiscence unitunicate.

Ascospores: 1–2 or c. 4 per ascus, spores 2-(3) per ascus, subglobose, ellipsoid, or ovoid, 24-43 µm long, 16-25 µm wide; septa absent.

Conidiomata: Present; hyphomycetous.

Conidiophores: Euoidium-type; not branched; basal cells 40-85 µm long, 10-12 µm wide. Conidium Formation: Conidiogenous cells in chains. Conidia: Ellipsoid, ovoid, or doliiform; macroconidial (wide, mostly with characteristically attenuated ends, more or less concave), not branched, 25-40 µm long, 19-26 µm wide; aseptate.

(report generated 04.Okt.2007)