These plant names can sure be confusing at times. I was curious so I went to The Catalogue of Life website and typed in Perovskia scabiosifolia and it came back "No records found", so I typed in just the genus Perovskia and these are the only ones that showed up:
Perovskia abrotanoides Kar. Species accepted name
Perovskia atriplicifolia Benth. Species accepted name
At The Plant List website, the following are the only ones listed:
Perovskia abrotanoides Kar. Accepted
Perovskia angustifolia Kudrjasch. Accepted
Perovskia angustifolia Kudr. Unresolved
Perovskia artemisioides Boiss. Accepted
Perovskia atriplicifolia Benth. Accepted
Perovskia botschantzevii Kovalevsk. & Kochk. Accepted
Perovskia kudrjaschevii Gorschk. & Pjataeva Accepted
Perovskia kudrjaschevii Gorschk. & Pjat. Synonym
Perovskia linczevskii Kudrjasch. Accepted
Perovskia pamirica C.Y.Yang & B.Wang Synonym
Perovskia scrophulariifolia Bunge Accepted
Perovskia virgata Kudrjasch. Accepted
