Myrtleleaf St. John's Wort

Panhandle

Bay, Calhoun, Escambia, Jefferson, Leon, Liberty, Okaloosa, Santa Rosa, Wakulla, Washington

North

Alachua, Baker, Bradford, Clay, Columbia, Dixie, Duval, Flagler, Gilchrist, Lafayette, Levy, Marion, Nassau, Putnam, St. Johns, Suwannee, Taylor, Union

Central

Citrus, Hardee, Hernando, Highlands, Hillsborough, Lake, Manatee, Okeechobee, Orange, Osceola, Pasco, Pinellas, Polk, St. Lucie, Sarasota, Seminole, Volusia

South

Charlotte, Collier, Hendry, Lee

49 of 67 counties, from research-grade iNaturalist observations. They show where people have photographed it, not every place it grows — absence here isn't proof it's absent.