| Selaginella selaginoides | IE, VCH18 Offaly, Edenderry | James Ponsonby Brunker | Albert Agricultural College, Glasnevin | | DBC |
| Stellaria palustris | IE, VCH19 Co. Kildare, Cushaling | James Ponsonby Brunker | Albert Agricultural College, Glasnevin | | DBC |
| Calamintha arvensis | IE, VCH18,VCH19,VCH22, Edenderry | James Ponsonby Brunker | Albert Agricultural College, Glasnevin | | DBC |
| Mimulus moschatus | IE, VCH20 Co. Wicklow, Powerscourt | James Ponsonby Brunker | | 14/9/1924 | DBC |
| Bromus hordeaceus | IE, VCH20 Co. Wicklow, Askintinny | James Ponsonby Brunker | | 15/6/1926 | DBC |
| Lycopodium inundatum | IE, VCH20 Co. Wicklow, Glendalough | James Ponsonby Brunker | Reginald Wiliam Scully | 7/1928 | GALW |
| Hieracium sabaudum | IE, VCH20 Co. Wicklow, Avoca | James Ponsonby Brunker | | 2/9/1928 | DBC |
| Hieracium sect. Foliosa | IE, VCH20 Co. Wicklow, Lough Dan | James Ponsonby Brunker | | 16/9/1928 | DBC |
| Hymenophyllum unilaterale | IE, VCH21 Co. Dublin, River Dodder | James Ponsonby Brunker | | 26/12/1928 | DBC |
| Trifolium striatum | IE, VCH20 Co. Wicklow, Kilcoole | James Ponsonby Brunker | | 1/6/1929 | DBC |
| Listera cordata | IE, VCH20 Co. Wicklow, Carrick Mountain | James Ponsonby Brunker | | 16/6/1929 | DBC |
| Hieracium sect. Oreadea | IE, VCH20 Co. Wicklow, Poulaphouca | James Ponsonby Brunker | Albert Agricultural College, Glasnevin | 28/6/1929 | DBC |
| Hieracium sect. Oreadea | IE, VCH20 Co. Wicklow, Dargle | James Ponsonby Brunker | Albert Agricultural College, Glasnevin | 1/7/1929 | 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 |
| Asplenium lanceolatum | IE, VCH20 Co. Wicklow, Arklow Head | James Ponsonby Brunker | | 21/7/1929 | DBC |
| Hieracium sabaudum | IE, VCH20 Co. Wicklow, Poulaphouca | James Ponsonby Brunker | Albert Agricultural College, Glasnevin | 29/7/1929 | DBC |
| Drosera longifolia | IE, VCH19,VCH20, Kings River | James Ponsonby Brunker | | 1/8/1929 | 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 |
| Melilotus indicus | IE, VCH21 Co. Dublin, Dublin | James Ponsonby Brunker | | 9/8/1929 | DBC |
| Potamogeton polygonifolius | IE, VCH20 Co. Wicklow, Ballinafunshoge | James Ponsonby Brunker | | 11/9/1929 | DBC |
| Lathraea squamaria | IE, VCH20 Co. Wicklow, Enniskerry | James Ponsonby Brunker | | 19/4/1930 | DBC |
| Sisymbrium thalianum | IE, VCH20 Co. Wicklow, Murrough Cultivated | James Ponsonby Brunker | | 21/4/1930 | DBC |
| Anemone nemorosa | IE, VCH20 Co. Wicklow, Ballysmuttan | James Ponsonby Brunker | | 3/5/1930 | 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 |
| 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 |
| Luzula pilosa | IE, VCH20 Co. Wicklow, Cronybyrne Wood | James Ponsonby Brunker | | 18/5/1930 | DBC |
| Ophioglossum vulgatum | IE, VCH20 Co. Wicklow, Powerscourt | James Ponsonby Brunker | Albert Agricultural College, Glasnevin | 21/5/1930 | DBC |
| Lepidium draba | IE, VCH20 Co. Wicklow, Newcastle | James Ponsonby Brunker | Albert Agricultural College, Glasnevin | 31/5/1930 | DBC |
| Saxifraga stellaris | IE, VCH20 Co. Wicklow, Camarahill | James Ponsonby Brunker | Albert Agricultural College, Glasnevin | 1/6/1930 | DBC |
| Carex binervis | IE, VCH21 Co. Dublin, Kilmashogue Mountain | James Ponsonby Brunker | Albert Agricultural College, Glasnevin | 14/6/1930 | DBC |
| Eleocharis quinqueflora | IE, VCH20 Co. Wicklow, Glen of Imaal | James Ponsonby Brunker | Albert Agricultural College, Glasnevin | 29/6/1930 | 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 |
| Koeleria cristata | IE, VCH20 Co. Wicklow, Killoughter | James Ponsonby Brunker | Albert Agricultural College, Glasnevin | 4/7/1930 | DBC |