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CCDB → Angiosperms → Orobanchaceae → Euphrasia → Euphrasia williamsii B. L. Rob.
| Name | Accepted Name | Gametophytic(n) | Sporophytic(2n) | Data Source | reference | ||
| ! | Euphrasia williamsii B. L. Rob. | Euphrasia williamsii B. L. Rob. | 44 | IPCN66 | Love & Love 1966b | ||
| ! | Euphrasia williamsii B. L. Rob. | Euphrasia williamsii B. L. Rob. | 44 | Fedorov, 1974 | Liive A., LOve D. 1966 |