| Summary: | application/pdf Fifteen Erysiphaceous taxa found on 20 host plant species in Patagonia are documented. A new species Oidium maculatae (type host: Viola maculata) is described. Berberis linearifolia, Buddleja globosa, Prosopis alpataco and Viola maculata, are new host plants for Erysiphales.Three new combinations on fungi and host plant species were founded: Erysiphe howeana – Fuchsia magellanica; E.patagoniaca – Nothofagus pumilio and N. antarctica. The genus Sawadaea and the species S. bicornis on Acer negundo and A. pseudoplatanus, are new records for South America. New host plants recorded for Argentina: Consolida ajacis, Galega officinalis and Plantago lanceolata. New host plants recorded for Patagonia: Galium aparine, Melilotus albus, Petunia x hybrida, Potentilla anserina, and Spiraea x bumalda. Oidium longipes is a new record for Argentina and Golovinomyces riedlianus is a new record for Patagonia. 東アジアと南米における絶対寄生菌の隔離分布機構の解明 journal article
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