Neoerysiphe galeopsidis (DC.) U. Braun

Data Set Maintenance: Data set compiled and standard item. Data set author(s): Kainz C. Data set reviewer(s): Schubert K. (06-04-04); revised.

Nomenclature: Current taxonomic status: accepted or basionymous. Taxonomic rank: species. Synonyms: Erysiphe lamprocarpa (Wallr.) Link; Erysiphe labiatarum (Wallr.) Chev.; Erysiphe ballotae (Rabenh.) Fuss; Erysiphaceae Tul. & C. Tul.; Erysiphales.

Type Information: Basionym: Erysiphe galeopsidis DC. Type: Erysiphe galeopsidis DC.

Taxonomic Literature: Taxonomic notes: +conidiophores straight, foot-cells cylindric, moderately long, followed by 1-3 shorter cells;+appressoria moderately lobed;+ascocarp outer wall cells obscure, irregularly shaped, ca. 6-20 µm diam.;sacospores not developed before overwintering, asci always immature in the current season. Braun U., Beih. Nova Hedwigia 89: 1-700 [235-237] (1987); Braun U., The powdery mildews (Erysiphales) of Europe. - 1-337. Jena, Stuttgart, New York (1995).

Biogeography: Nearly cosmopolitan. Continent: Africa, Asia-Temperate, Australasia, Europe, Northern America, and Asia-Tropical. 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), 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, Baltic States (Estonia, Lithuania, Latvia), and Ukraine; Ontario (Canada), Colarado (USA), Montana (USA), Oregon (USA), Washington (USA), Wyoming (USA), Illinois (USA), Iowa (USA), Kansas (USA), Minnesota (USA), Missouri (USA), North Dakota (USA), Oklahoma (USA), South Dakota (USA), Wisconsin (USA), Connecticut (USA), Indiana (USA), Massachusetts (USA), Michigan (USA), New Jersey (USA), New York (USA), Ohio (USA), Pennsylvania (USA), California (USA), New Mexico (USA), Texas (USA), Florida (USA), North Carolina (USA), South Carolina (USA), and District of Columbia (USA). Checklist records: United States and Canada (continental).

Ecology: Biotroph; phytopathogenic; growing on stems and leaves, amphigenous. Host or Phorophyte Taxonomy: Galeopsis tetrahit L.; Galeopsis, Geraniaceae and Labiatae.

Reproduction Strategy: With sexual (and possible asexual) stages. Ascocarps: Cleistothecioid, orbicular, forming independently from the host thallus or mycelium, in loose groups and gregarious, (.085)-.1-.16-(.18) mm in diam.. Margin: External filaments present (often shorter than the cleistothecial diam.); interlaced with each other and interwoven with surrounding mycelium, mycelioid, straight, .25-2 µm long, 3.5-8 µm in diameter, hyaline and pigmented (brown), numerous, growing all across the lower half of the ascocarp (often forming a dense felt around the fruit-bodies), smooth, thin, not ramified and ramified (rarely), not branched, septate.

Asci: 5-16 asci per ascocarp, not stipitate and indistinctly stipitate, 40-80 µm long, 20-45 µm wide; dehiscence unitunicate (asci always immature in the current season, overwintered asci present).

Ascospores: 1–2, c. 4, and c. 8 per ascus, spores (2)-3-6-(8) per ascus, 21-23 µm long, 13.5-15.5 µm wide; septa absent.

Conidiomata: Present; hyphomycetous.

Conidiophores: Euoidium-type; not branched; basal cells 25-50 µm long, 8.5-12.5 µm wide. Conidium Formation: Conidiogenous cells in chains. Conidia: Ellipsoid, ovoid, and doliiform; macroconidial, not branched, 25-36 µm long, 13-22 µm wide; aseptate.

(report generated 04.Okt.2007)