genus Virgilia vs Virgilia

genus Virgilia and Virgilia both are nouns.

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

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

genus Virgilia and Virgilia: genus of South African trees having pinnate leaves and rose-purple flowers followed by leathery pods

genus Virgilia (noun)	Virgilia (noun)
genus of South African trees having pinnate leaves and rose-purple flowers followed by leathery pods	genus of South African trees having pinnate leaves and rose-purple flowers followed by leathery pods