| Mentha arvensis x aquatica = M. x verticillata | IE, VCH37 Co. Armagh, ballybrennan | W F Johnson | Science & Art Museum Dublin | 9/1894 | 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, VCH37 Co. Armagh, Fathom Park | Henry William Lett | Henry William Lett | 22/8/1894 | 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, VCH38 Co. Down, Saul | Samuel Alexander Stewart | | 8/1897 | DBN |
| Mentha arvensis x aquatica = M. x verticillata | IE, VCH39 Co. Antrim | | | | 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, VCH39 Co. Antrim, Lough Neagh | Richard Manliffe Barrington | National Museum Ireland | 27/8/1874 | 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, VCH39 Co. Antrim, Shanes Castle | Richard Manliffe Barrington | | 27/8/1874 | 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, VCH40 Co. Londonderry, Londonderry | | | | DBN |
| Mentha arvensis x aquatica = M. x verticillata | IE, Ambiguous locality (IE), Youghal | | A Ball | | DBN |
| Mentha arvensis x aquatica x spicata = M. x smithiana | IE, VCH3,VCH4, South Bride | Isaac Carroll | National Museum Ireland Alexander Goodman More | 9/1855 | DBN |
| Mentha arvensis x aquatica x spicata = M. x smithiana | IE, Kerry, Dingle | Michael Long | | 9/9/1969 | DBN |
| Mentha arvensis x aquatica x spicata = M. x smithiana | IE, VCH5 East Cork, South Bride | Thomas Wright | National Museum Ireland Alexander Goodman More | | DBN |
| Mentha arvensis x aquatica x spicata = M. x smithiana | IE, Cork | | National Museum Ireland Alexander Goodman More | 9/1855 | DBN |
| Mentha arvensis x aquatica x spicata = M. x smithiana | IE, VCH12 Co. Wexford, Kildavin Bridge | Rosemary Fitzgerald | | 15/9/1991 | DBN |
| Mentha arvensis x aquatica x spicata = M. x smithiana | IE, VCH12 Co. Wexford, Killowen | Rosemary Fitzgerald | | 22/9/1991 | DBN |
| Mentha arvensis x aquatica x spicata = M. x smithiana | IE, VCH12 Co. Wexford, Screen Hills | Nicholas F Stewart Rosemary Fitzgerald | | 14/9/1990 | DBN |
| Mentha arvensis x aquatica x spicata = M. x smithiana | IE, VCH21 Co. Dublin, Rathfarnham | Robert Lloyd Praeger | Robert Lloyd Praeger | 9/1903 | DBN |
| Mentha arvensis x aquatica x spicata = M. x smithiana | IE, VCH21 Co. Dublin, Rathfarnham | Robert Lloyd Praeger | Robert Lloyd Praeger | 9/1903 | DBN |
| Mentha arvensis x aquatica x spicata = M. x smithiana | IE, VCH23 Westmeath, Kilcleagh Abbey | | National Museum Ireland Alexander Goodman More | 9/1855 | DBN |
| Mentha arvensis x aquatica x spicata = M. x smithiana | IE, VCH38 Co. Down, Saintfield Cultivated | Coslett Herbert Waddell | Coslett Herbert Waddell | 9/1894 | DBN |
| Mentha arvensis x spicata = M. x gracilis | GB, VC17 Surrey, Kingston | Charles Frederick Ball | | 7/1900 | DBN |
| Mentha arvensis x spicata = M. x gracilis | IE, Cork, Rostallan | Robert Albert Phillips | Robert Albert Phillips | 9/1898 | DBN |
| Mentha arvensis x spicata = M. x gracilis | IE, VCH8 Co. Limerick, Bilboa River | Sylvia Reynolds | | 25/7/1990 | DBN |
| Mentha arvensis x spicata = M. x gracilis | IE, VCH12 Co. Wexford, Drumderry | Evelyn Mary Booth | | | DBN |
| Mentha arvensis x spicata = M. x gracilis | IE, VCH13 Co. Carlow, Borris | Robert Lloyd Praeger | National Museum Ireland Robert Lloyd Praeger | 29/7/1899 | DBN |
| Mentha arvensis x spicata = M. x gracilis | IE, VCH13 Co. Carlow, Kildavin | Evelyn Mary Booth | | | DBN |
| Mentha arvensis x spicata = M. x gracilis | IE, VCH18 Offaly, Portarlington | Robert Lloyd Praeger | Robert Lloyd Praeger | 3/8/1896 | DBN |
| Mentha arvensis x spicata = M. x gracilis | IE, VCH30 Co. Cavan, Cavan | Robert Lloyd Praeger | Science & Art Museum Dublin Robert Lloyd Praeger | 9/8/1905 | DBN |
| Mentha arvensis x spicata = M. x gracilis | IE, VCH30 Co. Cavan, Cavan | Robert Lloyd Praeger | Robert Lloyd Praeger | 9/8/1905 | DBN |
| Mentha arvensis x spicata = M. x gracilis | IE, VCH30 Co. Cavan, Lough Ramor | Robert Lloyd Praeger | Robert Lloyd Praeger | 20/7/1896 | DBN |
| Mentha spicata x suaveolens = M. x villosa | IE, VCH38 Co. Down, Saul Cultivated | Coslett Herbert Waddell | | 9/1895 | DBN |
| Mentha spicata x suaveolens = M. x villosa | IE, VCH38 Co. Down, Saul Cultivated | Coslett Herbert Waddell | Coslett Herbert Waddell Robert Lloyd Praeger | 9/1894 | DBN |
| Mentha spicata x suaveolens = M. x villosa | IE, VCH38 Co. Down, Saul | Coslett Herbert Waddell | National Museum Ireland Alexander Goodman More Coslett Herbert Waddell | 2/10/1894 | DBN |
| Mentha spicata x suaveolens = M. x villosa | IE, VCH38 Co. Down, Saul | Coslett Herbert Waddell | Alexander Goodman More Coslett Herbert Waddell | 2/10/1894 | DBN |
| Mentha spicata x suaveolens = M. x villosa | IE, VCH38 Co. Down, Saul | Coslett Herbert Waddell | | 2/10/1894 | DBN |