Epichloë guerinii

{{Short description|Species of fungus}}

{{Speciesbox

| taxon = Epichloë guerinii

| authority = (Guillaumin, Ravel & C.D.Moon) Leuchtm. & Schardl

| synonyms =

• Neotyphodium guerinii {{small|Guillaumin, Ravel & C.D.Moon}}

}}

Epichloë guerinii is a hybrid asexual species in the fungal genus Epichloë.

A systemic and seed-transmissible grass symbiont first described in 2007,{{cite journal|last1=Moon|first1=Christina D.|last2=Guillaumin|first2=Jean-Jacques|last3=Ravel|first3=Catherine|last4=Li|first4=Chunjie|last5=Craven|first5=Kelly D.|last6=Schardl|first6=Christopher L.|title=New Neotyphodium endophyte species from the grass tribes Stipeae and Meliceae|journal=Mycologia|volume=99|issue=6|year=2007|pages=895–905|issn=0027-5514|doi=10.1080/15572536.2007.11832521}} Epichloë guerinii is a natural allopolyploid of Epichloë gansuensis and a strain in the Epichloë typhina complex.

Epichloë guerinii is found in Europe, where it has been identified in the grass species Melica ciliata and Melica transsilvanica.