Articles by Taxonomic Group

Physarum galbeum is reported for the first time from Turkey. Four species of fungi are recorded for the first time from Bulgaria (Botryosphaeria visci on Viscum album, Erysiphe elevata on Catalpa bignonioides, Erysiphe flexuosa on Aesculus hippocastanum, and Scleroderma polyrhizum). Additionally, Botryosphaeria visci is a new record for Romania.

A critical revision of all available, previously collected in Israel specimens of Golovinomyces species and respective reference data was made. In addition, extensive herbarium materials were collected here by authors. As a result, species composition of ten species from the genus Golovinomyces was established. Three of the species, namely, G. cynoglossi, G. echinopis, and G. verbasci, were recorded for the first time for Israel. Also, incorrect identification of Neoerysiphe cumminsiana as Erysiphe cichoracearum on Filago eriocephala, Hedypnois cretica, Lagoseris sancta, Phagnalon rupestre, Picris amalecitana, P. galilaea, Rhagadiolus stellatus, Senecio vernalis, Thrincia tuberosa, and Tolpis virgata was revealed.

The powdery mildew fungus Leveillula helichrysi, so far only known from the Ukraine, is recorded, described, and illustrated from Germany, including the anamorph, which has been found for the first time. Based on the anamorph, the correct assignment of this species to Leveillula could be confirmed. L. helichrysi belongs in Leveillula subgen. Obtusispora.

Information about Neoerysiphe galii (Erysiphales), a powdery mildew fungus new for Israel, is provided. The necessity of additional examination of Neoerysiphe and Golovinomyces specimens collected on Galium species is emphasised since some of these host species can be infected, apart from N. galii and G. riedlianus, by another fungus similar to G. cichoraceorum.

Of the 73 specimens of Erysiphales collected in the north-eastern part of Bulgaria in 1996, 1998, and 1999, and another 3 Bulgarian specimens present in herb. BUCM, one species (Erysiphe caulicola (Petr.) U. Braun), and 42 fungus-host combinations are reported for the first time from this country. In addition, 17 new localities for previously known such combinations are recorded from Black Sea Coast, Northeast Bulgaria, and Sofia region.