Gentiana quinquefolia vs Gentianella quinquefolia

Gentiana quinquefolia and Gentianella quinquefolia both are nouns.

Word	Noun	Adjective	Verb	Adverb
Gentiana quinquefolia	Yes	No	No	No
Gentianella quinquefolia	Yes	No	No	No

As nouns, Gentiana quinquefolia and Gentianella quinquefolia are synonyms defined as:

Gentiana quinquefolia and Gentianella quinquefolia: gentian of eastern North America having clusters of bristly blue flowers

Other synonyms of Gentiana quinquefolia include ague weed, agueweed, five-flowered gentian, stiff gentian.

Gentiana quinquefolia (noun)	Gentianella quinquefolia (noun)
gentian of eastern North America having clusters of bristly blue flowers	gentian of eastern North America having clusters of bristly blue flowers