| Astragalus danicus | GB, VC29 Cambridgeshire, Gog Magog | George Goode | Allan Octavian Hume Coslett Herbert Waddell | 6/1892 | SLBI |
| Barbarea intermedia | IE, VCH38 Co. Down, Saintfield | Coslett Herbert Waddell | Allan Octavian Hume Coslett Herbert Waddell | 10/6/1905 | SLBI |
| Barbarea intermedia | IE, VCH38 Co. Down, Saintfield | Coslett Herbert Waddell | Allan Octavian Hume Coslett Herbert Waddell | 6/1905 | SLBI |
| Callitriche hermaphroditica | VCH39, Harbour Island | Coslett Herbert Waddell | Watson Botanical Exchange Club William Robert Sherrin | 18/8/1909 | SLBI |
| Callitriche hermaphroditica | IE, VCH38 Co. Down, Aughnadarragh | Coslett Herbert Waddell | Allan Octavian Hume Coslett Herbert Waddell | 8/1896 | SLBI |
| Cardamine impatiens | GB, VC69 Westmorland, Whitbarrow Scar IE, VCH38 Co. Down, Saintfield Cultivated | Coslett Herbert Waddell | Watson Botanical Exchange Club Allan Octavian Hume Coslett Herbert Waddell | 7/1902 | SLBI |
| Carex elata | IE, VCH32 Co. Monaghan, Rossmore | Coslett Herbert Waddell | Allan Octavian Hume Coslett Herbert Waddell | 3/7/1900 | SLBI |
| Circaea alpina | IE, VCH38 Co. Down, Saintfield | Coslett Herbert Waddell | Allan Octavian Hume | 20/8/1903 | SLBI |
| Circaea lutetiana x alpina = C. x intermedia | IE, VCH38 Co. Down, Saintfield | Coslett Herbert Waddell | Watson Botanical Exchange Club Allan Octavian Hume | 7/1904 | SLBI |
| Crepis capillaris | IE, VCH19 Co. Kildare, Grey Abbey | Coslett Herbert Waddell | Watson Botanical Exchange Club Coslett Herbert Waddell William Robert Sherrin | 5/7/1913 | SLBI |
| Draba muralis | IE, VCH40 Co. Londonderry, Umbra | Coslett Herbert Waddell Henry William Lett | Alfred Loydell William Robert Sherrin | 1905 | SLBI |
| Eriocaulon aquaticum | IE, VCH16,VCH17, Lough Corrib | Samuel Arthur Brennan | Watson Botanical Exchange Club Coslett Herbert Waddell William Robert Sherrin | 8/1895 | SLBI |
| Euphrasia salisburgensis | IE, VCH8 Co. Limerick, Askeaton | Coslett Herbert Waddell | Watson Botanical Exchange Club Coslett Herbert Waddell | 7/1900 | SLBI |
| Euphrasia salisburgensis | IE, VCH8 Co. Limerick, Askeaton,Nantinan | Coslett Herbert Waddell | Allan Octavian Hume | 11/8/1905 | SLBI |
| Fallopia convolvulus var. subalatum | IE, VCH38 Co. Down, grey abbey | Coslett Herbert Waddell | Watson Botanical Exchange Club William Robert Sherrin | 9/1914 | SLBI |
| Galium album | IE, VCH38 Co. Down, Saintfield | Coslett Herbert Waddell | William Robert Sherrin | 5/1896 | SLBI |
| Hieracium sect. Hieracium | IE, VCH38 Co. Down, Saintfield, Rowallane | Coslett Herbert Waddell | Allan Octavian Hume Coslett Herbert Waddell | 12/7/1904 | SLBI |
| Lathyrus palustris | IE, VCH37 Co. Armagh, Lough Neagh | S A Blenan | Watson Botanical Exchange Club Coslett Herbert Waddell William Robert Sherrin | 5/7/1865 | SLBI |
| Limonium vulgare x humile = L. x neumanii | IE, VCH38 Co. Down, Portaferry | Coslett Herbert Waddell | Allan Octavian Hume Coslett Herbert Waddell | 9/1905 | SLBI |
| 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 |
| Polygonum arenastrum | IE, VCH38 Co. Down, grey abbey | Coslett Herbert Waddell | Watson Botanical Exchange Club Coslett Herbert Waddell William Robert Sherrin | 9/1916 | SLBI |
| Polygonum aviculare var. littorale | IE, VCH38 Co. Down, Ballywalter | Coslett Herbert Waddell | Watson Botanical Exchange Club Coslett Herbert Waddell William Robert Sherrin | 21/9/1917 | SLBI |
| Pyrola media | IE, VCH36 Tyrone, Kildress | Samuel Arthur Brennan | Watson Botanical Exchange Club Coslett Herbert Waddell | 7/1897 | SLBI |
| Rosa canina x obtusifolia = R. x dumetorum | IE, VCH38 Co. Down, grey abbey | Coslett Herbert Waddell | Watson Botanical Exchange Club William Robert Sherrin | 31/8/1915 | SLBI |
| Rosa glauca var. coriifolia | GB, VC69 Westmorland, Kentmere | Coslett Herbert Waddell | | 14/8/1899 | SLBI |
| Rosa glauca | IE, VCH38 Co. Down, Saintfield | Coslett Herbert Waddell | | 5/8/1896 | SLBI |
| Rosa mollis | IE, VCH39 Co. Antrim, Whitewell, Belfast | Coslett Herbert Waddell | | 24/7/1896 | SLBI |
| Rosa spinosissima x canina = R. x hibernica | IE, VCH38 Co. Down, Holywood | Coslett Herbert Waddell | Allan Octavian Hume | 6/1906 to 7/1906 | SLBI |
| Rosa spinosissima x canina = R. x hibernica | IE, VCH38 Co. Down, Tillysburn | Coslett Herbert Waddell | Coslett Herbert Waddell | 15/6/1896 to 24/7/1896 | SLBI |
| Rubus cardiophyllus | IE, VCH38 Co. Down, Killough | Coslett Herbert Waddell | Coslett Herbert Waddell | 30/7/1902 | SLBI |
| Rubus corylifolius | IE, VCH38 Co. Down, Saintfield | Coslett Herbert Waddell | Allan Octavian Hume Coslett Herbert Waddell | 21/8/1894 | SLBI |
| Rubus dunensis | IE, VCH38 Co. Down, Saintfield | Coslett Herbert Waddell | Allan Octavian Hume | 16/7/1905 | SLBI |
| Rubus dunensis | IE, VCH38 Co. Down, Saintfield | Coslett Herbert Waddell | Allan Octavian Hume | 16/7/1905 | SLBI |
| Rubus errabundus | GB, VC86 Stirlingshire, Stirling Castle | Coslett Herbert Waddell | Watson Botanical Exchange Club Coslett Herbert Waddell | 25/7/1890 | SLBI |
| Rubus fissus | IE, VCH38 Co. Down, Saintfield | Coslett Herbert Waddell | Allan Octavian Hume Coslett Herbert Waddell | 6/7/1905 | SLBI |
| Rubus fissus | IE, VCH38 Co. Down, Saintfield | Coslett Herbert Waddell | Allan Octavian Hume Coslett Herbert Waddell | 6/7/1905 | SLBI |
| Rubus fissus | IE, VCH38 Co. Down, Saintfield | Coslett Herbert Waddell | Allan Octavian Hume Coslett Herbert Waddell | 6/7/1905 | SLBI |
| Rubus fissus | IE, VCH38 Co. Down, Saintfield | Coslett Herbert Waddell | Allan Octavian Hume Coslett Herbert Waddell | 6/7/1905 | SLBI |
| Rubus hibernicus | IE, VCH38 Co. Down, Rowallan | Coslett Herbert Waddell | Allan Octavian Hume | 16/7/1905 | SLBI |
| Rubus hibernicus | IE, VCH38 Co. Down, Saintfield | Coslett Herbert Waddell | | 16/7/1905 | SLBI |