Sabbatia campestris vs sabbatia

Sabbatia campestris and sabbatia both are nouns.

Word	Noun	Adjective	Verb	Adverb
Sabbatia campestris	Yes	No	No	No
sabbatia	Yes	No	No	No

As nouns, sabbatia is a hypernym of Sabbatia campestris; that is, sabbatia is a word with a broader meaning than Sabbatia campestris:

Sabbatia campestris: prairie herb with solitary lilac-colored flowers
sabbatia: any of various plants of the genus Sabbatia having usually pink cymose flowers; occur from acid bogs to brackish marshes

Sabbatia campestris (noun)	sabbatia (noun)
prairie herb with solitary lilac-colored flowers	any of various plants of the genus Sabbatia having usually pink cymose flowers; occur from acid bogs to brackish marshes