| Oenanthe fistulosa | IE, VCH22 Meath, Bective | James Ponsonby Brunker | Albert Agricultural College, Glasnevin | 10/7/1930 | DBC |
| Rhynchospora alba | IE, VCH19 Co. Kildare, Cushaling | James Ponsonby Brunker | Albert Agricultural College, Glasnevin | 9/7/1930 | DBC |
| Filago vulgaris | IE, VCH20 Co. Wicklow, Bray Head | James Ponsonby Brunker | Albert Agricultural College, Glasnevin | 5/7/1930 | DBC |
| Koeleria cristata | IE, VCH20 Co. Wicklow, Killoughter | James Ponsonby Brunker | Albert Agricultural College, Glasnevin | 4/7/1930 | DBC |
| Cirsium dissectum | IE, VCH20 Co. Wicklow, Lough Dan | James Ponsonby Brunker | Albert Agricultural College, Glasnevin | 2/7/1930 | DBC |
| Lycopodium clavatum | IE, VCH20 Co. Wicklow, Lough Dan | James Ponsonby Brunker | Albert Agricultural College, Glasnevin | 2/7/1930 | DBC |
| Orobanche caryophyllacea | IE, VCH20 Co. Wicklow, Lough Dan | James Ponsonby Brunker | Albert Agricultural College, Glasnevin | 2/7/1930 | DBC |
| Eleocharis quinqueflora | IE, VCH20 Co. Wicklow, Glen of Imaal | James Ponsonby Brunker | Albert Agricultural College, Glasnevin | 29/6/1930 | DBC |
| Carex binervis | IE, VCH21 Co. Dublin, Kilmashogue Mountain | James Ponsonby Brunker | Albert Agricultural College, Glasnevin | 14/6/1930 | DBC |
| Saxifraga stellaris | IE, VCH20 Co. Wicklow, Camarahill | James Ponsonby Brunker | Albert Agricultural College, Glasnevin | 1/6/1930 | DBC |
| Lepidium draba | IE, VCH20 Co. Wicklow, Newcastle | James Ponsonby Brunker | Albert Agricultural College, Glasnevin | 31/5/1930 | DBC |
| Ophioglossum vulgatum | IE, VCH20 Co. Wicklow, Powerscourt | James Ponsonby Brunker | Albert Agricultural College, Glasnevin | 21/5/1930 | DBC |
| Luzula pilosa | IE, VCH20 Co. Wicklow, Cronybyrne Wood | James Ponsonby Brunker | | 18/5/1930 | DBC |
| Geranium lucidum | IE, VCH20 Co. Wicklow, The Devil's Glen | James Ponsonby Brunker | Albert Agricultural College, Glasnevin | 17/5/1930 | DBC |
| Melica uniflora | IE, VCH20 Co. Wicklow, The Devil's Glen | James Ponsonby Brunker | | 17/5/1930 | DBC |
| Alchemilla vulgaris | IE, VCH20 Co. Wicklow, Ballyman Glen | James Ponsonby Brunker | Albert Agricultural College, Glasnevin | 14/5/1930 | DBC |
| Botrychium lunaria | IE, VCH20 Co. Wicklow, Ballyman Glen | James Ponsonby Brunker | | 14/5/1930 | DBC |
| Carex dioica | IE, VCH20 Co. Wicklow, Ballyman Glen | James Ponsonby Brunker | | 14/5/1930 | DBC |
| Anemone nemorosa | IE, VCH20 Co. Wicklow, Ballysmuttan | James Ponsonby Brunker | | 3/5/1930 | DBC |
| Sisymbrium thalianum | IE, VCH20 Co. Wicklow, Murrough Cultivated | James Ponsonby Brunker | | 21/4/1930 | DBC |
| Lathraea squamaria | IE, VCH20 Co. Wicklow, Enniskerry | James Ponsonby Brunker | | 19/4/1930 | DBC |
| Potamogeton polygonifolius | IE, VCH20 Co. Wicklow, Ballinafunshoge | James Ponsonby Brunker | | 11/9/1929 | DBC |
| Melilotus indicus | IE, VCH21 Co. Dublin, Dublin | James Ponsonby Brunker | | 9/8/1929 | DBC |
| Hieracium strictiforme | IE, VCH20 Co. Wicklow, The Devil's Glen | James Ponsonby Brunker | Albert Agricultural College, Glasnevin | 3/8/1929 | DBC |
| Hieracium umbellatum | IE, VCH20 Co. Wicklow, The Devils Glen | James Ponsonby Brunker | Albert Agricultural College, Glasnevin | 3/8/1929 | DBC |
| Drosera longifolia | IE, VCH19,VCH20, Kings River | James Ponsonby Brunker | | 1/8/1929 | DBC |
| Hieracium sabaudum | IE, VCH20 Co. Wicklow, Poulaphouca | James Ponsonby Brunker | Albert Agricultural College, Glasnevin | 29/7/1929 | DBC |
| Asplenium lanceolatum | IE, VCH20 Co. Wicklow, Arklow Head | James Ponsonby Brunker | | 21/7/1929 | DBC |
| Galium boreale | IE, VCH23 Westmeath, Killinare House | James Ponsonby Brunker | | 12/7/1929 | DBC |
| Teucrium scordium | IE, VCH23 Westmeath, Killinure Lough | James Ponsonby Brunker | | 12/7/1929 | DBC |
| Eleocharis parvula | IE, VCH20 Co. Wicklow, Arklow | Arthur Wilson Stelfox | | 7/1929 | DBC |
| Hieracium sect. Oreadea | IE, VCH20 Co. Wicklow, Dargle | James Ponsonby Brunker | Albert Agricultural College, Glasnevin | 1/7/1929 | DBC |
| Hieracium sect. Oreadea | IE, VCH20 Co. Wicklow, Poulaphouca | James Ponsonby Brunker | Albert Agricultural College, Glasnevin | 28/6/1929 | DBC |
| Listera cordata | IE, VCH20 Co. Wicklow, Carrick Mountain | James Ponsonby Brunker | | 16/6/1929 | DBC |
| Trifolium striatum | IE, VCH20 Co. Wicklow, Kilcoole | James Ponsonby Brunker | | 1/6/1929 | DBC |
| Hymenophyllum unilaterale | IE, VCH21 Co. Dublin, River Dodder | James Ponsonby Brunker | | 26/12/1928 | DBC |
| Narthecium ossifragum | IE, VCH20 Co. Wicklow, Newcastle | Michael John Gorman | Albert Agricultural College, Glasnevin | 11/1928 | DBC |
| Scirpus maritimus | IE, VCH20 Co. Wicklow, Newcastle | Michael John Gorman | Albert Agricultural College, Glasnevin | 11/1928 | DBC |
| Plantago maritima | IE, VCH20 Co. Wicklow, Newcastle | Michael John Gorman | Albert Agricultural College, Glasnevin | 10/1928 | DBC |
| Elytrigia repens | IE, VCH21 Co. Dublin, Glasnevin | Michael John Gorman | Albert Agricultural College, Glasnevin | 10/1928 | DBC |