Carex myosuroides

Carex myosuroides (syn. Kobresia myosuroides), the mouse-tail bog sedge, is a species of sedge (family Cyperaceae) with a circumboreal distribution. It is the only known sedge to have ectomycorrhizal associations.

It is a known host to a number of fungi, including Anthracoidea elynae, Arthrinium puccinioides, Cladosporium herbarum, Clathrospora elynae, Lophodermium caricinum, Phaeosphaeria herpotrichoides, Schizonella melanogramma, Septoria punctoidea and possibly to Micropeziza cornea.