Onoclea struthiopteris vs Pteretis struthiopteris

Onoclea struthiopteris and Pteretis struthiopteris both are nouns.

Word	Noun	Adjective	Verb	Adverb
Onoclea struthiopteris	Yes	No	No	No
Pteretis struthiopteris	Yes	No	No	No

As nouns, Onoclea struthiopteris and Pteretis struthiopteris are synonyms defined as:

Onoclea struthiopteris and Pteretis struthiopteris: tall fern of northern temperate regions having graceful arched fronds and sporophylls resembling ostrich plumes

Other synonyms of Onoclea struthiopteris include fiddlehead, Matteuccia struthiopteris, ostrich fern, shuttlecock fern.

Onoclea struthiopteris (noun)	Pteretis struthiopteris (noun)
tall fern of northern temperate regions having graceful arched fronds and sporophylls resembling ostrich plumes	tall fern of northern temperate regions having graceful arched fronds and sporophylls resembling ostrich plumes