| Mentha aquatica x spicata = M. x piperita | IE, Galway, Clifden | M Scannell | Science & Art Museum Dublin | 26/6/1968 | DBN |
| Mentha arvensis x aquatica = M. x verticillata | IE, VCH8 Co. Limerick, West Ardagh | Matilda Cullen Knowles | Science & Art Museum Dublin | 9/1908 | DBN |
| Puccinellia maritima | IE, VCH9 Co. Clare, Inishmacnaghtan | Matilda Cullen Knowles | Science & Art Museum Dublin Matilda Cullen Knowles | 6/1908 | BIRM |
| Mentha arvensis x aquatica = M. x verticillata | IE, VCH8 Co. Limerick, Foynes | Charlotte Grace O'Brien | Science & Art Museum Dublin | 8/1906 | DBN |
| Pimpinella saxifraga | IE, VCH26 East Mayo, Lough Carra | Robert Lloyd Praeger | Science & Art Museum Dublin Robert Lloyd Praeger | 7/1906 | GALW |
| 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 |
| Chenopodium suecicum | IE, VCH19 Co. Kildare, Straffan | Matilda Cullen Knowles | Science & Art Museum Dublin | 10/1904 | GALW |
| Mentha arvensis x aquatica = M. x verticillata | IE, VCH9 Co. Clare, Edenvale | Robert Donough O'Brien | Science & Art Museum Dublin | 26/8/1904 | DBN |
| Eruca vesicaria subsp. sativa | IE, VCH19 Co. Kildare, Straffan | Matilda Cullen Knowles | Irish National Herbarium Glasnevin Dublin Science & Art Museum Dublin | 8/1904 | GALW |
| Lepidium ruderale | IE, VCH19 Co. Kildare, Straffan | Matilda Cullen Knowles | Irish National Herbarium Glasnevin Dublin Science & Art Museum Dublin | 8/1904 | GALW |
| Crithmum maritimum | IE, VCH27 West Mayo, Dooega | Robert Lloyd Praeger | Science & Art Museum Dublin Robert Lloyd Praeger | 27/7/1904 | GALW |
| Chamerion angustifolium | IE, VCH1 South Kerry, Slievanore | Robert Lloyd Praeger | Science & Art Museum Dublin Robert Lloyd Praeger | 20/7/1904 | GALW |
| Juniperus nana | IE, VCH28 Co. Sligo, Rosses Point | Robert Lloyd Praeger | Science & Art Museum Dublin Robert Lloyd Praeger | 12/7/1904 | GALW |
| Salix viminalis x caprea = S. x smithiana | IE, VCH8 Co. Limerick, West Loghill | Matilda Cullen Knowles | Science & Art Museum Dublin | 6/1904 | DBN |
| Salix viminalis x cinerea = S. x holosericea | IE, VCH8 Co. Limerick, Loghill | Matilda Cullen Knowles | Science & Art Museum Dublin | 6/1904 | DBN |
| Spergularia marina | IE, VCH8,VCH9, Foynes | Matilda Cullen Knowles | Irish National Herbarium Glasnevin Dublin Science & Art Museum Dublin | 6/1904 | GALW |
| Coronopus didymus | IE, VCH27 West Mayo, Westport Quay | Robert Lloyd Praeger | Science & Art Museum Dublin Robert Lloyd Praeger | 7/7/1903 | GALW |
| Coronopus squamatus | IE, VCH27 West Mayo, Clare Island | Robert Lloyd Praeger | Science & Art Museum Dublin Robert Lloyd Praeger | 7/1903 | GALW |
| Osmunda regalis | IE, VCH33 Fermanagh, County Fermà nagh | Robert Lloyd Praeger | Science & Art Museum Dublin Robert Lloyd Praeger | 7/1903 | GALW |
| Mentha aquatica x spicata = M. x piperita | IE, VCH8 Co. Limerick, White River | Matilda Cullen Knowles | Science & Art Museum Dublin | 6/1903 | DBN |
| Trifolium striatum | IE, VCH35 West Donegal, Saint John's Point | Robert Lloyd Praeger | Science & Art Museum Dublin Robert Lloyd Praeger | 15/7/1902 | GALW |
| Papaver rhoeas | IE, VCH38 Co. Down, County Down | Robert Lloyd Praeger | Science & Art Museum Dublin Robert Lloyd Praeger | 12/7/1902 | GALW |
| Mentha arvensis x aquatica = M. x verticillata | IE, VCH36 Tyrone, Strabane Canal | | Science & Art Museum Dublin | 9/1900 | DBN |
| Salix viminalis x caprea = S. x smithiana | IE, VCH36 Tyrone | Matilda Cullen Knowles | Science & Art Museum Dublin | 9/1900 | DBN |
| Salix viminalis x caprea = S. x smithiana | IE, VCH36 Tyrone, Foyle | Matilda Cullen Knowles | Science & Art Museum Dublin | 9/1900 | DBN |
| Mentha arvensis x aquatica = M. x verticillata | IE, VCH25 Co. Roscommon, Slieve Bawn | Robert Lloyd Praeger | Science & Art Museum Dublin Robert Lloyd Praeger | 21/8/1900 | DBN |
| Mentha arvensis x aquatica = M. x verticillata | IE, VCH29 Co. Leitrim, Garadice Lough | Robert Lloyd Praeger | Science & Art Museum Dublin Robert Lloyd Praeger | 21/8/1900 | DBN |
| Teucrium scordium | IE, VCH24 Co. Longford, Lough Ree | Robert Lloyd Praeger | Science & Art Museum Dublin Robert Lloyd Praeger | 20/8/1900 | GALW |
| Nasturtium sylvestre | IE, VCH8 Co. Limerick, Lough Gur | Robert Lloyd Praeger | Science & Art Museum Dublin Robert Lloyd Praeger | 15/8/1900 | GALW |
| Euphrasia brevipila | IE, VCH10 North Tipperary, Cloughjordan | Robert Lloyd Praeger | Science & Art Museum Dublin Robert Lloyd Praeger | 12/8/1900 | GALW |
| Lepidium heterophyllum | IE, VCH31,VCH37, Ballymascanlan | Robert Lloyd Praeger | Science & Art Museum Dublin Robert Lloyd Praeger | 16/7/1900 | GALW |
| Geranium columbinum | IE, VCH15 South-east Galway, Gort | Robert Lloyd Praeger | Science & Art Museum Dublin Robert Lloyd Praeger | 7/7/1900 | GALW |
| Myosotis secunda | IE, VCH19 Co. Kildare, Baltinglass | Robert Lloyd Praeger | Science & Art Museum Dublin Robert Lloyd Praeger | 18/9/1899 | GALW |
| Coronopus didymus | IE, VCH16 West Galway, Salt Hill | Robert Lloyd Praeger | Science & Art Museum Dublin Robert Lloyd Praeger | 28/8/1899 | GALW |
| Chenopodium rubrum | IE, VCH15 South-east Galway, Ballyloughaun | Robert Lloyd Praeger | Science & Art Museum Dublin Robert Lloyd Praeger | 24/8/1899 | GALW |
| Scutellaria galericulata | IE, VCH6 Co. Waterford, Ballyscanlan Lough | Robert Lloyd Praeger | Science & Art Museum Dublin | 12/8/1899 | GALW |
| Scutellaria minor | IE, VCH6 Co. Waterford, Ballyscanlan Lough | Robert Lloyd Praeger | Science & Art Museum Dublin Robert Lloyd Praeger | 12/8/1899 | GALW |
| Spergularia rubra | IE, VCH11 Co. Kilkenny, Snowhill | Robert Lloyd Praeger | Science & Art Museum Dublin Robert Lloyd Praeger | 11/8/1899 | GALW |
| Radiola linoides | IE, VCH13 Co. Carlow, Blackstairs Mountain | Robert Lloyd Praeger | Science & Art Museum Dublin Robert Lloyd Praeger | 30/7/1899 | GALW |
| Geranium columbinum | IE, VCH13 Co. Carlow, Borris | Robert Lloyd Praeger | Science & Art Museum Dublin Robert Lloyd Praeger | 29/7/1899 | GALW |