#Rust of couch grass (#Elymus repens) caused by by #Puccinia agropyri, here hyperparasitized by #Sphaerellopsis filum (Andrésy, FR).

Again and again #Sphaerellopsis filum colonizing #Puccinia triticina uredinia. So beautiful 😮 that I interrupted several times my #Zymo isolation to prepare microscope slides and take pictures...

#Sphaerellopsis filum (Darluca filum) mycoparasite of #Puccinia triticina (leaf #rust) found colonizing most of uredinia present on this #wheat flag leaf.

Cirrhus of #mycoparasite #Sphaerellopsis filum (or macrocondialis?) piercing rust pustules on weed #grass (#Grignon