Petasites vulgaris vs Petasites hybridus

Petasites vulgaris and Petasites hybridus both are nouns.

Word	Noun	Adjective	Verb	Adverb
Petasites vulgaris	Yes	No	No	No
Petasites hybridus	Yes	No	No	No

As nouns, Petasites vulgaris and Petasites hybridus are synonyms defined as:

Petasites vulgaris and Petasites hybridus: small Eurasian herb having broad leaves and lilac-pink rayless flowers; found in moist areas

Other synonyms of Petasites vulgaris include bog rhubarb, butterbur.

Petasites vulgaris (noun)	Petasites hybridus (noun)
small Eurasian herb having broad leaves and lilac-pink rayless flowers; found in moist areas	small Eurasian herb having broad leaves and lilac-pink rayless flowers; found in moist areas