Are Conradina and Rowan native to the same locales?  
Conradina: Conradina is a genus of flowering plants in the mint family, Lamiaceae. Conradina:  There are 7 species of "Conradina", all native to the southeastern United States. Rowan: The rowans or mountain-ashes are shrubs or trees in the genus "Sorbus" of the rose family Rosaceae.
i don't know