Synthyris plantaginea (E. James) Benth. | Besseya plantaginea (E. James) Rydb. | | | Synthyris plantaginea(E. James) Benth. | Besseya plantaginea(E. James) Rydb. |
Synthyris missurica (Raf.) Pennell | | a | | Synthyris missurica(Raf.) Pennell | |
Synthyris reniformis (Douglas ex Benth.) Benth. | Veronica regina-nivalis M. M. Mart. Ort. & Albach | | | Synthyris reniformis(Douglas ex Benth.) Benth. | Veronica regina-nivalisM. M. Mart. Ort. & Albach |