genus Parmelia vs Parmelia

genus Parmelia and Parmelia both are nouns.

Word	Noun	Adjective	Verb	Adverb
genus Parmelia	Yes	No	No	No
Parmelia	Yes	No	No	No

As nouns, genus Parmelia and Parmelia are synonyms defined as:

genus Parmelia and Parmelia: type genus of the Parmeliaceae; a large genus of chiefly alpine foliaceous lichens

genus Parmelia (noun)	Parmelia (noun)
type genus of the Parmeliaceae; a large genus of chiefly alpine foliaceous lichens	type genus of the Parmeliaceae; a large genus of chiefly alpine foliaceous lichens