Table 1.

Phytomyxean species according to Karling (1968) including the species described more recently

	Terrestrial	Fresh water	Marine
Green plants	Ligniera verrucosa Maire & A. Tisson Ligniera junci (Schwartz) Maire & A. Tisson* Ligniera pilorum Fron. & Gaillat Ligniera betae (Němec) Karling Ligniera hypogeae (Borzí) Karling Ligniera plantaginis (Němec) Karling Plasmodiophora brassicae Woronin Polymyxa graminis Ledingham Polymyxa betae Keskin Sorodiscus radicicolus Ivimey Cook Sorosphaera veronicae J. Schröt. Sorosphaera radicalis Ivimey Cook & Schwartz* Sorosphaera viticola Kirchm., Neuh. & L. Huber Spongospora subterranea (Wallr.) Lagerh. Spongospora campanulae (Ferd. & Winge) Ivimey Cook Spongospora cotulae Barrett Tetramyxa rhizophaga Lihnell Tetramyxa elaeagni Y. Yendo & K. Takase	Ligniera isoetes Palm Ligniera junci Membranosorus heterantherae Ostenf. & H.E. Petersen Sorodiscus callitrichis Lagerh. & Winge Sorosphaera veronicae Spongospora nasturtii M. W. Dick Tetramyxa triglochinis Molliard	Plasmodiophora bicaudata Feldmann Plasmodiophora diplantherae (Ferd. & Winge) Ivimey Cook Plasmodiophora halophilae Ferd. & Winge Plasmodiophora maritima Feldm.-Maz. Tetramyxa parasitica K. I. Goebel
Oomycetes	Octomyxa achlyae Couch, J. Leitn. & Whiffen* Octomyxa brevilegniae Pend.* Woronina polycystis Cornu* Woronina pythii Goldie-Sm.*	Octomyxa achlyae* Octomyxa brevilegniae* Sorodiscus cokeri Goldie-Sm.* Woronina leptolegnia Karling* Woronina polycystis* Woronina pythii*
Green algae s. l.		Sorodiscus karlingii Ivimey Cook Woronina aggregata Zopf Woronina glomerata (Cornu) A. Fisch
Brown algae			Maullinia ectocarpi I. Maier, E. R. Parodi, Westermeier & D. G. Müll. Phagomyxa algarum Karling
Diatoms			Phagomyxa bellerocheae Schnepf Phagomyxa odontellae Kühn, Schnepf & Bulman

Species are sorted by the taxonomic affiliation of their hosts and the preferred habitat of their hosts. Some of them are listed in terrestrial and fresh water habitats as their hosts can live in both habitats. The Phytomyxean species are not considered to be terrestrial even though their hosts grow in soil because the actively motile zoospores require water for dispersal and infection of hosts. Zoospores can swim from soil water into open water. The 18 species causing hypertrophies of the host are indicated in bold fonts. Species marked with asterisk cause enlarged cells of the host, but no considerable hypertrophies