Phytophthora ramorum is an oomycete plant pathogen classified in the kingdom Stramenopila. P. ramorum is the causal agent of sudden oak death on oak and over 40 plant genera. It causes stem cankers on trees, and leaf blight on ornamentals and forest shrubs species. It is an emerging plant pathogen first observed in North America but also widespread in Europe.

Browse this species genome in the Ensembl Genomes website.