Redesignation of Phytophthora taxon Pgchlamydo as Phytophthora chlamydospora sp. nov.

Publication Type:

Journal Article


North American Fungi, Volume 10, p.1–14 (2015)



chlamydospora, new species, Pg chlamydo, Phytophthora, soil, streams


A new species, Phytophthora chlamydospora, is described. P. chlamydospora, previously known informally as P. taxon Pgchlamydo, is found in streams and wet soil worldwide and is a pathogen of some riparian tree species. It is self-sterile, and produces persistent non-papillate sporangia, usually on unbranched sporangiophores. Clamydospores are formed most regularly at warmer temperatures. Phytophthora chlamydospora is classified in ITS Clade 6.