+ | Anagallis minima | | Henry Elliott Fox | Botanical Exchange Club of The British Isles Charles Bailey | 8/1884 | MANCH |
+ | Saxifraga hypnoides | | Augustin Ley | Botanical Exchange Club of The British Isles Elizabeth Anne Lomax | 14/7/1886 | MANCH |
+ | Zostera noltei | | John Edwards Griffith | Botanical Exchange Club of The British Isles | 8/1884 | MANCH |
| Fragaria moschata | US, Massachusetts, Lowell | F S Beattie | Botanical Exchange Club of The British Isles | 10/5/1930 | SLBI |
| Thalictrum minus subsp. majus | SE, Uppsala l, Uppsala Cultivated | John Thomas Irvine Boswell-Syme | Botanical Exchange Club of The British Isles Augustin Ley | 9/1879 | BIRM |
| Eriophorum vaginatum | IT | | Botanical Exchange Club of The British Isles Augustin Ley George Claridge Druce | 7/1886 | BIRM |
| Senecio vulgaris var. radiatus | IE, Ambiguous locality (IE), Killarney | George Claridge Druce | Botanical Exchange Club of The British Isles Augustin Ley George Claridge Druce | 6/1890 | BIRM |
| Potamogeton lucens x gramineus = P. x angustifolius | IE, VCH40 Co. Londonderry, coleraine | Samuel Alexander Stewart | Botanical Exchange Club of The British Isles Charles Bailey | 29/7/1883 | MANCH |
| Rubus pascuorum | IE, VCH40 Co. Londonderry, Carnabridge | Charles Bailey | Botanical Exchange Club of The British Isles Allan Octavian Hume | 14/7/1896 | SLBI |
| Barbarea intermedia | IE, VCH39 Co. Antrim, Whitewell, Belfast | Samuel Alexander Stewart | Botanical Exchange Club of The British Isles Augustin Ley | 15/6/1879 | BIRM |
+ | Calamagrostis stricta | IE, VCH39 Co. Antrim, Toome Bridge | George Claridge Druce | Botanical Exchange Club of The British Isles Charles Bailey | 7/1909 | MANCH |
| Potamogeton perfoliatus x crispus = P. x cooperi | IE, VCH39 Co. Antrim, Templepatrick | Samuel Alexander Stewart | Botanical Exchange Club of The British Isles Augustin Ley | 10/8/1894 | BIRM |
| Hieracium basalticola | IE, VCH39 Co. Antrim, Sallagh Braes | Samuel Alexander Stewart | Botanical Exchange Club of The British Isles William Hadden Beeby | 15/6/1890 | SLBI |
| Hieracium basalticola | IE, VCH39 Co. Antrim, Sallagh Braes | Samuel Alexander Stewart | Botanical Exchange Club of The British Isles Frederick Townsend | 15/6/1890 | SLBI |
| Rubus anisacanthos | IE, VCH39 Co. Antrim, Portrush | Charles Bailey | Botanical Exchange Club of The British Isles Allan Octavian Hume | 14/7/1896 | SLBI |
| Viola curtisii | IE, VCH39 Co. Antrim, Portrush | Charles Bailey | Botanical Exchange Club of The British Isles Allan Octavian Hume | 15/7/1896 | SLBI |
| Viola tricolor subsp. curtisii | IE, VCH39 Co. Antrim, Portrush | Charles Bailey | Botanical Exchange Club of The British Isles Augustin Ley | 15/7/1896 | BIRM |
| Bidens cernua | IE, VCH39 Co. Antrim, Portmore Lough | Samuel Alexander Stewart | Botanical Exchange Club of The British Isles Augustin Ley | 27/8/1886 | BIRM |
+ | Calamagrostis stricta | IE, VCH39 Co. Antrim, Lough Neagh | Robert Lloyd Praeger | Botanical Exchange Club of The British Isles Charles Bailey Samuel Alexander Stewart | 7/8/1892 | MANCH |
+ | Calamagrostis stricta | IE, VCH39 Co. Antrim, Lough Neagh | Robert Lloyd Praeger | Botanical Exchange Club of The British Isles Charles Bailey Samuel Alexander Stewart | 7/8/1892 | MANCH |
+ | Viola tricolor | IE, VCH39 Co. Antrim, Lough Neagh | Samuel Alexander Stewart | Botanical Exchange Club of The British Isles | 25/6/1886 | MANCH |
| Viola tricolor subsp. curtisii | IE, VCH39 Co. Antrim, Lough Neagh | Samuel Alexander Stewart | Botanical Exchange Club of The British Isles Augustin Ley | 25/6/1886 | BIRM |
| Hieracium basalticola | IE, VCH39 Co. Antrim, Knockagh | Samuel Alexander Stewart | Botanical Exchange Club of The British Isles | | ABS |
| Pilosella peleteriana | IE, VCH39 Co. Antrim, Core Hill, Belfast Cultivated | Coslett Herbert Waddell | Botanical Exchange Club of The British Isles Coslett Herbert Waddell Edward Francis Linton Samuel Alexander Stewart | 8/1900 | ABS |
| Euphrasia micrantha | IE, VCH39 Co. Antrim, Colin Top | Ida Mary Roper | Botanical Exchange Club of The British Isles Ida Mary Roper | 29/8/1928 | SLBI |
| Equisetum hyemale x variegatum = E. x trachyodon | IE, VCH39 Co. Antrim, Colin Glen | Samuel Alexander Stewart | Botanical Exchange Club of The British Isles Augustin Ley | 29/7/1893 | BIRM |
| Rosa sherardii | IE, VCH39 Co. Antrim, Carnlough | Coslett Herbert Waddell | Botanical Exchange Club of The British Isles Coslett Herbert Waddell | 9/8/1910 | BIRM |
+ | Equisetum hyemale x variegatum = E. x trachyodon | IE, VCH39 Co. Antrim, Belfast,Colin Glen | Samuel Alexander Stewart | Botanical Exchange Club of The British Isles Charles Bailey | 29/7/1893 | MANCH |
| Pilosella caespitosa x lactucella = P. x floribunda | IE, VCH39 Co. Antrim, Belfast, Cave Hill Cultivated | Coslett Herbert Waddell | Botanical Exchange Club of The British Isles Allan Octavian Hume Coslett Herbert Waddell | 8/1900 | SLBI |
| Mentha spicata | IE, VCH39 Co. Antrim, Belfast | James Walter White | Botanical Exchange Club of The British Isles James Walter White Job Edward Lousley | 2/8/1927 | SLBI |
| Mentha spicata x longifolia = M. x villosonervata | IE, VCH39 Co. Antrim, Belfast | James Walter White | Botanical Exchange Club of The British Isles J Fraser | 12/8/1926 | K |
| Mentha spicata x longifolia = M. x villosonervata | IE, VCH39 Co. Antrim, Belfast | Charles Edward Britton James Walter White | Botanical Exchange Club of The British Isles | 5/8/1926 | K |
| Zannichellia palustris | IE, VCH39 Co. Antrim, Belfast | Samuel Alexander Stewart | Botanical Exchange Club of The British Isles Samuel Alexander Stewart | 12/8/1878 | ABS |
| Angelica archangelica | IE, VCH39 Co. Antrim, Ballintoy IE, VCH39 Co. Antrim, Carrickarade Island | Charles Bailey | Botanical Exchange Club of The British Isles Charles Bailey | 11/7/1896 | BIRM |
| Viola tricolor subsp. curtisii | IE, VCH39 Co. Antrim, Antrim | Samuel Alexander Stewart | Botanical Exchange Club of The British Isles William Hadden Beeby John Gilbert Baker | 25/6/1886 | SLBI |
| Rubus polyanthemus | IE, VCH39 Co. Antrim, Aird | Charles Bailey | Botanical Exchange Club of The British Isles Allan Octavian Hume | 13/7/1896 | SLBI |
| Puccinellia maritima | IE, VCH38 Co. Down, Strangford Lough | Coslett Herbert Waddell | Botanical Exchange Club of The British Isles Coslett Herbert Waddell William Hunt Painter | 7/1904 | ABS |
| Rubus hibernicus | IE, VCH38 Co. Down, Saintfield | Harry Joseph Riddelsdell | Botanical Exchange Club of The British Isles | 18/8/1925 | SLBI |
| Rubus lettii | IE, VCH38 Co. Down, Saintfield | Coslett Herbert Waddell | Botanical Exchange Club of The British Isles Coslett Herbert Waddell | 22/8/1903 | SLBI |
| Rubus leyanus | IE, VCH38 Co. Down, Saintfield | Coslett Herbert Waddell | Botanical Exchange Club of The British Isles Coslett Herbert Waddell | 21/8/1903 | SLBI |