+ | Euphorbia serrulata | | Arthur Bennett | Charles Bailey | 1880 | MANCH |
| Potamogeton trichoides | | | Arthur Bennett | | ABS |
+ | Teucrium botrys | | W Miller | Charles Bailey Arthur Bennett | 8/1881 | MANCH |
| Epipogium aphyllum | SE, J, Hammordoe | E Janssen | William Hadden Beeby Arthur Bennett Otto Nordstedt | 12/8/1883 | SLBI |
| Potamogeton praelongus | IE, VCH39 Co. Antrim, Sixmile River | Samuel Alexander Stewart | Arthur Bennett | 8/1894 | SLBI |
| Polygonum aviculare | IE, VCH38 Co. Down, Ballywalter | Coslett Herbert Waddell | Watson Botanical Exchange Club Arthur Bennett Charles Edgar Salmon Coslett Herbert Waddell Edward Shearburn Marshall Harold Stuart Thompson | 21/9/1917 | BIRM |
| Carex riparia | IE, Donegal, Donegal | Arthur Bennett | Arthur Bennett Charles Edgar Salmon | 6/1893 | BM |
| Potamogeton lucens x gramineus = P. x angustifolius | IE, VCH30 Co. Cavan | Samuel Alexander Stewart | Botanical Exchange Club of The British Isles Arthur Bennett | 6/7/1881 | ABS |
| Ranunculus flammula subsp. scoticus | IE, VCH27 West Mayo, Achill Island | Edward Shearburn Marshall | Allan Octavian Hume Arthur Bennett | 23/6/1899 | SLBI |
| Potamogeton gramineus | IE, VCH25 Co. Roscommon, River Suck | Harry Corbyn Levinge | Watson Botanical Exchange Club Arthur Bennett Harold Stuart Thompson | 26/7/1891 | BIRM |
| Sparganium minimum | IE, VCH25 Co. Roscommon, Kiltoom | Henry Chichester Hart | Arthur Bennett William Hadden Beeby | 1885 | SLBI |
| Carex appropinquata | IE, VCH23 Westmeath, Mullingar | David Moore | Arthur Bennett Charles Edgar Salmon David Moore | 1843 | BM |
| Potamogeton gramineus | IE, VCH23 Westmeath, Lough Iron | Robert Lloyd Praeger | Allan Octavian Hume Arthur Bennett | 3/7/1899 | SLBI |
| Carex appropinquata | IE, VCH23 Westmeath, Lough Ennell | Harry Corbyn Levinge | Arthur Bennett Charles Edgar Salmon | 16/7/1891 | BM |
| Carex appropinquata | IE, VCH23 Westmeath, Lough Ennell | Harry Corbyn Levinge | Arthur Bennett Charles Edgar Salmon | 16/7/1891 | BM |
| Carex dioica | IE, VCH23 Westmeath, Lough Derravaragh | Harry Corbyn Levinge | Arthur Bennett | 28/5/1895 | BM |
| Potamogeton lonchites | IE, VCH22 Meath, Navan | Edward Francis Linton | Edward Francis Linton William Hadden Beeby Arthur Bennett | 18/8/1885 | SLBI |
| Galium mollugo var. insubricum | IE, VCH21 Co. Dublin, Hough | Harry Corbyn Levinge | Augustin Ley Harry Corbyn Levinge Arthur Bennett | 15/6/1891 to 11/7/1891 | BIRM |
| Carex remota | IE, VCH20 Co. Wicklow, Ballymacarthur | M L Hodgson | Arthur Bennett Charles Edgar Salmon | 28/8/1890 | BM |
| Najas flexilis | IE, VCH16 West Galway, Roundstone | Samuel Alexander Stewart | William Hadden Beeby Arthur Bennett | 15/8/1887 | SLBI |
| Potamogeton gramineus | IE, VCH16 West Galway, Maam | David Moore | Allan Octavian Hume Arthur Bennett Charles Bailey | 8/1868 | SLBI |
| Potamogeton gramineus | IE, VCH16 West Galway, Maam | Arthur Bennett | Arthur Bennett Edward Francis Linton | 13/8/1885 | SLBI |
| Saxifraga umbrosa | IE, VCH16 West Galway, Ben Lettery | Samuel Alexander Stewart | William Hadden Beeby Arthur Bennett | 10/5/1876 | SLBI |
| Carex disticha | IE, VCH12 Co. Wexford, Macmine Castle | Edward Shearburn Marshall | Arthur Bennett Charles Edgar Salmon | 11/6/1897 | BM |
| Carex strigosa | IE, VCH12 Co. Wexford, Courtown | Edward Shearburn Marshall | Arthur Bennett | 14/6/1897 | E |
| Carex appropinquata | IE, VCH9 Co. Clare, Dromoland | Matilda Cullen Knowles | Arthur Bennett Matilda Cullen Knowles Charles Edgar Salmon | 29/6/1908 | BM |
| Habenaria albida | IE, VCH9 Co. Clare, Ballyvaughan | Harry Corbyn Levinge | Arthur Bennett | 18/5/1892 | K |
| Puccinellia maritima | IE, VCH8 Co. Limerick, Robertstow Creek | Matilda Cullen Knowles | Watson Botanical Exchange Club Augustin Ley Arthur Bennett | 6/1904 | BIRM |
| Carex acutiformis | IE, VCH6 Co. Waterford, Clonea Castle | Richard Manliffe Barrington | Arthur Bennett Charles Edgar Salmon | 26/5/1899 | BM |
| Spiranthes romanzoffiana | IE, VCH3 West Cork, Berehaven Peninsula | Alexander Goodman More | William Hadden Beeby Arthur Bennett | | SLBI |
| Potamogeton polygonifolius | IE, Kerry, Killarney | Reginald Wiliam Scully | Botanical Exchange Club of The British Isles Arthur Bennett Reginald Wiliam Scully | 8/1888 | MANCH |
| Potamogeton polygonifolius | IE, Kerry, Beaufort Bridge | Reginald Wiliam Scully | Arthur Bennett Reginald Wiliam Scully | 27/7/1889 | E |
| Potamogeton gramineus | IE, VCH2 North Kerry, Killarney,Lower Lake | Reginald Wiliam Scully | Arthur Bennett | 7/1889 | E |
| Potamogeton gramineus | IE, VCH2 North Kerry, Killarney,Lower Lake | Reginald Wiliam Scully | Arthur Bennett | 7/1889 | E |
| Saxifraga hirsuta var. dentata | IE, VCH2 North Kerry, Kerry | William Andrews | Botanical Exchange Club of The British Isles Arthur Bennett Augustin Ley | 1849 | BIRM |
| Carex aquatilis x nigra = C. x hibernica | IE, VCH1 South Kerry, Kenmare | Reginald Wiliam Scully | Allan Octavian Hume Reginald Wiliam Scully Arthur Bennett | 5/6/1889 | SLBI |
| Saxifraga umbrosa x hirsuta = S. x geum | IE, VCH1 South Kerry, Brandon Mountain | Samuel Alexander Stewart | Arthur Bennett | 18/7/1878 | SLBI |
+ | Valerianella rimosa | IE, Waterford,Durrow | Arthur Bennett | Charles Bailey | 6/1882 | MANCH |
| Carex buxbaumii | IE, VCH36,VCH39, Lough Neagh Cultivated | Arthur Bennett | Botanical Exchange Club of The British Isles | 1886 | ABS |
| Carex buxbaumii | IE, VCH36,VCH39, Lough Neagh Cultivated | Arthur Bennett | | 1883 1899 | SLBI |