Phytopythium vexans

are parasitized by

• Global Biotic Interactions: Rozella irregularis (E. J. Butler) Sparrow 1938

are pathogens of

• Global Biotic Interactions: Zea mays L. (corn,)
• Global Biotic Interactions: Lolium multiflorum Lam. (Italian Rye Grass)
• Global Biotic Interactions: Poa trivialis L. (rough bluegrass)
• Global Biotic Interactions: Agrostis capillaris L. (Colonial bent(grass))
• Global Biotic Interactions: Lolium perenne L. (perennial ryegrass)

have host

• Global Biotic Interactions: Cinchona officinalis L. (quinine)
• Global Biotic Interactions: Malus pumila Mill. (paradise apple)
• Global Biotic Interactions: Quercus robur L. (English oak)
• Global Biotic Interactions: Hevea brasiliensis (Willd. ex A. Juss.) Müll. Arg. (Para rubber tree)
• Global Biotic Interactions: Ananas comosus (L.) Merr. (Pineapple)