sheep's fescue vs Festuca ovina

sheep's fescue and Festuca ovina both are nouns.

Word	Noun	Adjective	Verb	Adverb
sheep's fescue	Yes	No	No	No
Festuca ovina	Yes	No	No	No

As nouns, sheep's fescue and Festuca ovina are synonyms defined as:

sheep's fescue and Festuca ovina: cultivated for sheep pasturage in upland regions or used as a lawn grass

Other synonyms of sheep's fescue include sheep fescue.

sheep's fescue (noun)	Festuca ovina (noun)
cultivated for sheep pasturage in upland regions or used as a lawn grass	cultivated for sheep pasturage in upland regions or used as a lawn grass