| Rosa glauca | IE, VCH38 Co. Down, Saintfield | Coslett Herbert Waddell | | 5/8/1896 | 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 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, Saintfield | Coslett Herbert Waddell | | 16/7/1905 | SLBI |
| Rubus hibernicus | IE, VCH38 Co. Down, Saintfield | Coslett Herbert Waddell | Allan Octavian Hume Coslett Herbert Waddell | 16/7/1905 | SLBI |
| Rubus hibernicus | IE, VCH38 Co. Down, Saintfield | Coslett Herbert Waddell | Allan Octavian Hume | 16/7/1905 | SLBI |
| Rubus lettii | IE, VCH38 Co. Down, Saintfield | Coslett Herbert Waddell | Allan Octavian Hume | 12/8/1898 | 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 |
| Rubus nemoralis | IE, VCH38 Co. Down, Saintfield | Coslett Herbert Waddell | Watson Botanical Exchange Club Allan Octavian Hume Coslett Herbert Waddell | 4/8/1902 | SLBI |
| Rubus rufescens | IE, VCH38 Co. Down, Saintfield | Coslett Herbert Waddell | | 4/8/1902 | SLBI |
| Senecio sarracenicus | IE, VCH38 Co. Down, Saintfield | Coslett Herbert Waddell | Allan Octavian Hume Coslett Herbert Waddell | 16/7/1905 | SLBI |
| Senecio sarracenicus | IE, VCH38 Co. Down, Saintfield | Coslett Herbert Waddell | Allan Octavian Hume | 16/7/1905 | SLBI |
| Senecio sarracenicus | IE, VCH38 Co. Down, Saintfield | Coslett Herbert Waddell | Allan Octavian Hume | 16/7/1905 | SLBI |
| Rubus lettii | IE, VCH38 Co. Down, Saintfield Vicarage | Coslett Herbert Waddell | Coslett Herbert Waddell William Moyle Rogers | 12/8/1898 | SLBI |
| Hieracium sect. Hieracium | IE, VCH38 Co. Down, Saintfield, Rowallane | Coslett Herbert Waddell | Allan Octavian Hume Coslett Herbert Waddell | 12/7/1904 | 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 |
| 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 |
| Viola reichenbachiana | IE, VCH39 Co. Antrim, Edenderry | Coslett Herbert Waddell | Watson Botanical Exchange Club Coslett Herbert Waddell Hugh Neville Dixon Leslie Beeching Hall | 4/4/1904 | SLBI |
| Rosa mollis | IE, VCH39 Co. Antrim, Whitewell, Belfast | Coslett Herbert Waddell | | 24/7/1896 | SLBI |
| Viola lutea | IE, VCH40 Co. Londonderry, Magilligan point | Coslett Herbert Waddell | Allan Octavian Hume Coslett Herbert Waddell | 5/1904 | SLBI |
| Draba muralis | IE, VCH40 Co. Londonderry, Umbra | Coslett Herbert Waddell Henry William Lett | Alfred Loydell William Robert Sherrin | 1905 | SLBI |
| Lemna gibba | GB, VC37 Worcestershire, Ripple | Coslett Herbert Waddell | Watson Botanical Exchange Club Coslett Herbert Waddell | 8/1898 | SHYB |
| Rubus rogersii | IE, VCH38 Co. Down, Saintfield | Coslett Herbert Waddell | Coslett Herbert Waddell Charles Edgar Salmon | 27/8/1894 1/9/1894 | SHYB |
+ | Muscari neglectum | GB, VC15 East Kent, Luddenham | Frederic Henry Ward | Coslett Herbert Waddell Elizabeth Anne Lomax | 18/5/1887 | MANCH |
| Potamogeton polygonifolius | GB, VC25 East Suffolk, Belton | George Fitt | Charles Cardale Babington Coslett Herbert Waddell | 7/1843 | MANCH |
+ | Helianthemum oelandicum subsp. levigatum | GB, VC65 North-west Yorkshire, Middleton in Teesdale,Cronkley Fell | Henry Elliott Fox | Botanical Exchange Club of The British Isles Coslett Herbert Waddell Elizabeth Anne Lomax | 2/7/1886 | MANCH |
+ | Cerastium arcticum | GB, VC92 South Aberdeenshire, Braemar,Craig-na-dal-beag | Augustin Ley | Coslett Herbert Waddell Elizabeth Anne Lomax | 14/7/1876 | MANCH |
+ | Euphorbia hyberna | IE, VCH2 North Kerry, Killarney,Cromagloun (Cromaglan) | Samuel Alexander Stewart | Coslett Herbert Waddell Elizabeth Anne Lomax | 18/6/1885 | MANCH |
| Potamogeton gramineus x perfoliatus = P. x nitens | IE, VCH38 Co. Down, magheralin | Coslett Herbert Waddell | Botanical Exchange Club of The British Isles Charles Bailey Coslett Herbert Waddell | 7/1904 | MANCH |
+ | Viola tricolor | IE, VCH38 Co. Down, Saintfield | Coslett Herbert Waddell | Botanical Exchange Club of The British Isles Charles Bailey Coslett Herbert Waddell | 4/10/1910 | MANCH |
+ | Mentha suaveolens x longifolia = M. x rotundifolia | IE, VCH38 Co. Down, Saul | Coslett Herbert Waddell | Charles Bailey | 8/1895 | MANCH |
+ | Calamagrostis stricta | IE, VCH39 Co. Antrim, Lough Neagh | Coslett Herbert Waddell Nathaniel Carrothers | Watson Botanical Exchange Club Charles Bailey Coslett Herbert Waddell | 29/7/1911 | MANCH |
+ | Euphrasia nemorosa x brevipila | IE, Nantenan, near Askeaton, co. Limerick. [H8] | Coslett Herbert Waddell | | 11/9/1905 | MANCH |
| Mentha arvensis x aquatica x spicata = M. x smithiana | IE, VCH38 Co. Down, Bryansford Cultivated | Coslett Herbert Waddell | Watson Botanical Exchange Club Coslett Herbert Waddell | 8/1895 | LIV |