| Geranium sanguineum | IE, VCH10 North Tipperary, Cloughjordan | Robert Lloyd Praeger | National Museum Ireland Robert Lloyd Praeger | 12/8/1900 | GALW |
| Hymenophyllum tunbrigense | IE, VCH33 Fermanagh, Correl Glen | Tetley West | National Museum Ireland Robert Lloyd Praeger | 31/7/1900 | GALW |
| Isoetes lacustris | IE, VCH20,VCH21, Lough Bray Upper | J Adams | National Museum Ireland Harold Stuart Thompson | 20/7/1904 | BIRM |
| Juniperus communis | IE, Mayo, Lough Carra | Robert Lloyd Praeger | National Museum Ireland Robert Lloyd Praeger | 7/1906 | GALW |
| Lepidium draba | IE, VCH27 West Mayo, Westport | | National Museum Ireland Robert Lloyd Praeger | 7/1903 | GALW |
| Linum bienne | IE, VCH6 Co. Waterford, Tramore | Robert Lloyd Praeger | National Museum Ireland Robert Lloyd Praeger | 12/8/1899 | GALW |
| Linum bienne | IE, VCH22 Meath, Laytown | Robert Lloyd Praeger | National Museum Ireland Robert Lloyd Praeger | 8/1896 | GALW |
| Linum bienne | | | National Museum Ireland Robert Lloyd Praeger | | GALW |
| Lithospermum officinale | IE, VCH39 Co. Antrim, Cave Hill | Robert Lloyd Praeger | National Museum Ireland Robert Lloyd Praeger | 15/7/1885 | GALW |
| Lychnis flos-cuculi | IE, VCH39 Co. Antrim, Portmore | | National Museum Ireland Robert Lloyd Praeger | 6/1893 | GALW |
| Melampyrum pratense var. montanum | IE, VCH20 Co. Wicklow, Great Sugar Loaf | Robert Lloyd Praeger | National Museum Ireland Robert Lloyd Praeger | 12/5/1894 | GALW |
| Melampyrum pratense | IE, VCH19 Co. Kildare, Baltinglass | Robert Lloyd Praeger | National Museum Ireland Robert Lloyd Praeger | 18/6/1899 | GALW |
| Melampyrum pratense | IE, VCH11 Co. Kilkenny, Brandon Hill | Robert Lloyd Praeger | National Museum Ireland Robert Lloyd Praeger | 1/8/1898 | GALW |
| 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, VCH11 Co. Kilkenny, Lough Cullin | Richard Manliffe Barrington | National Museum Ireland | 19/8/1871 | 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 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, VCH23 Westmeath, Kilcleagh Abbey | | National Museum Ireland Alexander Goodman More | 9/1855 | 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, VCH5 East Cork, South Bride | Thomas Wright | National Museum Ireland Alexander Goodman More | | 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 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 |
| Minuartia hybrida | IE, VCH23 Westmeath, Athlone | Robert Lloyd Praeger | National Museum Ireland Robert Lloyd Praeger | 2/7/1899 | GALW |
| Minuartia hybrida | IE, VCH10 North Tipperary, Cloughjordan | Robert Lloyd Praeger | National Museum Ireland Robert Lloyd Praeger | 12/8/1900 | GALW |
| Minuartia hybrida | IE, VCH19 Co. Kildare, Curragh | Robert Lloyd Praeger | National Museum Ireland Robert Lloyd Praeger | 19/7/1897 | GALW |
| Moehringia trinervia | IE, VCH19,VCH22, Maynooth | Robert Lloyd Praeger | National Museum Ireland Robert Lloyd Praeger | 26/5/1894 | GALW |
| Myosotis secunda | IE, VCH21 Co. Dublin, Glenasmole | Robert Lloyd Praeger | National Museum Ireland Robert Lloyd Praeger | 6/1895 | GALW |
| Myosotis secunda | IE, VCH6 Co. Waterford, Kilmacthomas | Robert Lloyd Praeger | National Museum Ireland Robert Lloyd Praeger | 8/7/1899 | GALW |
| Narcissus tazetta x poeticus = N. x medioluteus | IE, VCH9 Co. Clare, Parteen | Matilda Cullen Knowles | National Museum Ireland Harold Stuart Thompson | 26/4/1907 | BIRM |
| Nasturtium sylvestre | IE, VCH6,VCH7,VCH11, Carrick-on-Suir | Robert Lloyd Praeger | National Museum Ireland Robert Lloyd Praeger | 23/6/1900 | GALW |
| Ophioglossum vulgatum | IE, VCH18 Offaly, Lough Goura | Robert Lloyd Praeger | National Museum Ireland Robert Lloyd Praeger | 25/6/1898 | GALW |
| Papaver somniferum | IE, VCH21 Co. Dublin, Rathgar | Robert Lloyd Praeger | National Museum Ireland Robert Lloyd Praeger | 7/1902 | GALW |
| Salix viminalis x caprea = S. x smithiana | IE, VCH27 West Mayo, Westport | Matilda Cullen Knowles | National Museum Ireland Matilda Cullen Knowles | 4/7/1909 | DBN |
| Silene dioica | IE, VCH27 West Mayo, Inishturk | Robert Lloyd Praeger | National Museum Ireland Robert Lloyd Praeger | 7/1906 | GALW |
| Silene latifolia subsp. alba | IE, VCH21 Co. Dublin, Portmarnock | Robert Lloyd Praeger | National Museum Ireland Robert Lloyd Praeger | 6/1894 | GALW |
| Stellaria palustris | IE, VCH23 Westmeath, Lough Ennell | Harry Corbyn Levinge | National Museum Ireland Harry Corbyn Levinge Robert Lloyd Praeger | 30/7/1892 | GALW |
| Stellaria palustris | IE, VCH15 South-east Galway, Portumna | Robert Lloyd Praeger | National Museum Ireland Robert Lloyd Praeger | 23/6/1898 | GALW |
| Stellaria palustris | IE, VCH17 North-east Galway, Tuaim | Robert Lloyd Praeger | National Museum Ireland Robert Lloyd Praeger | 3/7/1899 | GALW |
| Stellaria palustris | IE, VCH10 North Tipperary, Youghal Bay | Robert Lloyd Praeger | National Museum Ireland Robert Lloyd Praeger | 25/6/1899 | GALW |
| Taxus baccata | IE, VCH16 West Galway, Roundstone | Robert Lloyd Praeger | National Museum Ireland Robert Lloyd Praeger | 22/8/1896 | GALW |