| Mentha arvensis x aquatica = M. x verticillata | IE, VCH13 Co. Carlow, Saint Mullins | Robert Lloyd Praeger | Robert Lloyd Praeger | 11/8/1898 | DBN |
| Mentha arvensis x aquatica = M. x verticillata | IE, VCH8 Co. Limerick, Long Pavement | Bentley | Robert Lloyd Praeger | 1897 | DBN |
| Mentha arvensis x aquatica = M. x verticillata | IE, Tipperary, River Suir | J A F Briggs | | 28/7/1876 | DBN |
| Mentha arvensis x aquatica = M. x verticillata | IE, Tipperary, Clonmel | J A F Briggs | Alexander Goodman More | 28/7/1876 | DBN |
| Mentha arvensis x aquatica = M. x verticillata | IE, VCH21 Co. Dublin, Cockles Bridge | Nathaniel Colgan | Nathaniel Colgan | 20/8/1892 | DBN |
| Mentha arvensis x aquatica = M. x verticillata | IE, VCH6 Co. Waterford, Lismore | Frances 'Fanny' W Currey | | 1870 | DBN |
| Mentha arvensis x aquatica = M. x verticillata | IE, VCH19 Co. Kildare | J Douglas | | 1864 to 1865 | DBN |
| Mentha arvensis x aquatica = M. x verticillata | IE, VCH12 Co. Wexford, Drinagh | Rosemary Fitzgerald | | 21/9/1991 | DBN |
| Mentha arvensis x aquatica = M. x verticillata | IE, VCH9 Co. Clare, Killadysart | Matilda Cullen Knowles | Dublin Museum Matilda Cullen Knowles | 8/1907 | DBN |
| Mentha arvensis x aquatica = M. x verticillata | IE, VCH8 Co. Limerick, West Ardagh | Matilda Cullen Knowles | Science & Art Museum Dublin | 9/1908 | DBN |
| Mentha arvensis x aquatica = M. x verticillata | IE, VCH40 Co. Londonderry, Limavady | Mary Isabella Leebody | Robert Lloyd Praeger | 9/1894 | DBN |
| Mentha arvensis x aquatica = M. x verticillata | IE, VCH40 Co. Londonderry, Limavady | Mary Isabella Leebody | | 9/1893 | DBN |
| Mentha arvensis x aquatica = M. x verticillata | IE, VCH37 Co. Armagh, Fathom Park | Henry William Lett | Henry William Lett | 22/8/1894 | DBN |
| Mentha arvensis x aquatica = M. x verticillata | IE, VCH23 Westmeath, Knockdrin | Harry Corbyn Levinge | | 23/8/1888 | DBN |
| Mentha arvensis x aquatica = M. x verticillata | IE, VCH36 Tyrone, Strabane Canal | | Science & Art Museum Dublin | 9/1900 | DBN |
| Mentha arvensis x aquatica = M. x verticillata | IE, Cork | | Alexander Goodman More | 9/1855 | DBN |
| Mentha arvensis x aquatica = M. x verticillata | IE, VCH8 Co. Limerick, Foynes | Charlotte Grace O'Brien | Science & Art Museum Dublin | 8/1906 | DBN |
| Mentha arvensis x aquatica = M. x verticillata | IE, VCH9 Co. Clare, Edenvale | Robert Donough O'Brien | Science & Art Museum Dublin | 26/8/1904 | DBN |
| Mentha arvensis x aquatica = M. x verticillata | IE, VCH13 Co. Carlow | | Science & Art Museum Dublin Denis Robert Pack-Beresford | 1868 | DBN |
| Mentha arvensis x aquatica = M. x verticillata | IE, VCH39 Co. Antrim, Donegore | Robert Lloyd Praeger | Robert Lloyd Praeger | 8/1886 | DBN |
| Mentha arvensis x aquatica = M. x verticillata | IE, VCH38 Co. Down, Downpatrick | Robert Lloyd Praeger | Robert Lloyd Praeger | 9/1886 | DBN |
| Mentha arvensis x aquatica = M. x verticillata | IE, VCH25 Co. Roscommon, Lough Ree | Robert Lloyd Praeger | Robert Lloyd Praeger | 21/8/1900 | DBN |
| Mentha arvensis x aquatica = M. x verticillata | IE, VCH18 Offaly, Tullamore | Robert Lloyd Praeger | Robert Lloyd Praeger | 30/8/1899 | DBN |
| Mentha arvensis x aquatica = M. x verticillata | IE, VCH14 Laois, Graigue | Robert Lloyd Praeger | Robert Lloyd Praeger | 31/7/1899 | DBN |
| Mentha arvensis x aquatica = M. x verticillata | IE, VCH30 Co. Cavan, Annagh Lough | Robert Lloyd Praeger | Robert Lloyd Praeger | 8/1905 | DBN |
| Mentha arvensis x aquatica = M. x verticillata | IE, VCH11 Co. Kilkenny, Lough Cullin | Robert Lloyd Praeger | Robert Lloyd Praeger | 11/8/1899 | DBN |
| Mentha arvensis x aquatica = M. x verticillata | IE, VCH30 Co. Cavan, Lough Oughter | Robert Lloyd Praeger | National Museum Ireland Robert Lloyd Praeger | 8/1905 | DBN |
| Mentha arvensis x aquatica = M. x verticillata | IE, VCH37 Co. Armagh, ballybrennan | W F Johnson | Robert Lloyd Praeger | 9/1894 | DBN |
| Mentha arvensis x aquatica = M. x verticillata | IE, VCH10 North Tipperary, Cloughjordan | Robert Lloyd Praeger | Robert Lloyd Praeger | 12/8/1900 | DBN |
| Mentha arvensis x aquatica = M. x verticillata | IE, VCH19 Co. Kildare, Monasterevin | Robert Lloyd Praeger | Robert Lloyd Praeger | 23/7/1893 | DBN |
| Mentha arvensis x aquatica = M. x verticillata | IE, VCH24 Co. Longford, River Tang, mouth of | Robert Lloyd Praeger | Robert Lloyd Praeger | 19/8/1900 | DBN |
| Mentha arvensis x aquatica = M. x verticillata | IE, VCH18 Offaly, Clara | Robert Lloyd Praeger | Robert Lloyd Praeger | 30/8/1899 | DBN |
| Mentha arvensis x aquatica = M. x verticillata | IE, VCH39 Co. Antrim, Portmore Lough | Robert Lloyd Praeger | | 27/8/1886 | DBN |
| Mentha arvensis x aquatica = M. x verticillata | IE, VCH15 South-east Galway, Ballinasloe | Robert Lloyd Praeger | Robert Lloyd Praeger | 29/8/1899 | DBN |
| Mentha arvensis x aquatica = M. x verticillata | IE, VCH20 Co. Wicklow, Kilmacanogue | Robert Lloyd Praeger | Robert Lloyd Praeger | 12/8/1894 | DBN |
| Mentha arvensis x aquatica = M. x verticillata | IE, VCH27 West Mayo, Lough Conn | Robert Lloyd Praeger | Robert Lloyd Praeger | 27/7/1900 | DBN |
| Mentha arvensis x aquatica = M. x verticillata | IE, VCH25 Co. Roscommon, Slieve Bawn | Robert Lloyd Praeger | Robert Lloyd Praeger | 2/8/1900 | DBN |
| Mentha arvensis x aquatica = M. x verticillata | IE, VCH24 Co. Longford, Ballymahon | Robert Lloyd Praeger | Robert Lloyd Praeger | 19/8/1900 | DBN |
| Mentha arvensis x aquatica = M. x verticillata | IE, VCH28 Co. Sligo, Ballysadare River | Robert Lloyd Praeger | Robert Lloyd Praeger | 15/8/1897 | DBN |
| Mentha arvensis x aquatica = M. x verticillata | IE, VCH24 Co. Longford, River Tang, mouth of | Robert Lloyd Praeger | Robert Lloyd Praeger | 19/8/1900 | DBN |