Gerardia fruticosa Pursh | Penstemon fruticosus (Pursh) Greene sect. Erianthera |
Gerardia glutinosa (Gaertn.) Bunge | Rehmannia glutinosa (Gaertn.) DC. |
Gerardia humilis Diels | Agalinis humilis (Diels) D‘Arcy |
Gerardia fruticosa Pursh | Penstemon fruticosus (Pursh) Greene sect. Erianthera |
Gerardia glutinosa (Gaertn.) Bunge | Rehmannia glutinosa (Gaertn.) DC. |
Gerardia humilis Diels | Agalinis humilis (Diels) D‘Arcy |