| Rumex crispus | IE, VCH23 Westmeath, Knockdrin | William Richardson Linton | Botanical Exchange Club of The British Isles Augustin Ley Harry Corbyn Levinge | 27/7/1895 | BIRM |
| Polypodium vulgare | IE, VCH23 Westmeath, Knock Ross | Harry Corbyn Levinge | Botanical Exchange Club of The British Isles Augustin Ley Harry Corbyn Levinge | 17/6/1892 | BIRM |
| Carex hostiana | IE, VCH23 Westmeath, Knock Drui, Co. West Meath | Harry Corbyn Levinge | Botanical Exchange Club of The British Isles Augustin Ley Harry Corbyn Levinge | 3/7/1895 | BIRM |
| Carex dioica | IE, VCH23 Westmeath, Donore | Harry Corbyn Levinge | Botanical Exchange Club of The British Isles Augustin Ley Harry Corbyn Levinge | 28/5/1895 | BIRM |
| Carex appropinquata | IE, VCH23 Westmeath, Bog of Lynn | Harry Corbyn Levinge | Botanical Exchange Club of The British Isles Augustin Ley Harry Corbyn Levinge | 14/6/1895 | BIRM |
| Potamogeton lucens x perfoliatus = P. x salicifolius | IE, VCH22 Meath, Navan | Charles Bailey | Botanical Exchange Club of The British Isles Augustin Ley | 15/9/1879 | BIRM |
| Galium mollugo var. insubricum | IE, VCH21 Co. Dublin, Howth | Harry Corbyn Levinge | Botanical Exchange Club of The British Isles Augustin Ley Harry Corbyn Levinge | 24/6/1892 | BIRM |
| 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 |
| Artemisia stelleriana | IE, VCH21 Co. Dublin, Dublin | Harry Joseph Riddelsdell | Augustin Ley | 1901 | BIRM |
| Sisymbrium irio | IE, VCH21 Co. Dublin, Dublin | Robert Lloyd Praeger | Botanical Exchange Club of The British Isles Albert Bruce Jackson Augustin Ley | 8/1903 | BIRM |
| Viola tricolor subsp. curtisii | IE, VCH20 Co. Wicklow, Rockfield | George Claridge Druce | Botanical Exchange Club of The British Isles Augustin Ley George Claridge Druce | 5/1909 | BIRM |
| Isoetes lacustris | IE, VCH20 Co. Wicklow, Lough Bray | Fred Moore | Botanical Exchange Club of The British Isles Augustin Ley George Nicholson | 10/1880 | BIRM |
| Eleocharis parvula | IE, VCH20 Co. Wicklow, Arklow | Charles Bailey | Augustin Ley Charles Bailey | 8/1868 | BIRM |
| Eleocharis parvula | IE, VCH20 Co. Wicklow, Arklow | Alexander Goodman More | Augustin Ley | 14/8/1847 | BIRM |
| Athyrium filix-femina | IE, East Galway, Portumna | Edward Francis Linton | Augustin Ley Edward Francis Linton | 6/8/1885 | BIRM |
| Saxifraga umbrosa | IE, Galway, Killaries | Augustin Ley | Augustin Ley | 13/9/1867 | BIRM |
| Sesleria caerulea | IE, Galway, Galway Bay | Samuel Alexander Stewart | Botanical Exchange Club of The British Isles Augustin Ley | 5/1891 | BIRM |
| Myrica gale | IE, VCH17 North-east Galway, Galway | Augustin Ley | Augustin Ley | 10/9/1867 | BIRM |
| Allium ampeloprasum | IE, VCH16 West Galway, Roundstone | Harry Corbyn Levinge | Augustin Ley Harry Corbyn Levinge | 15/9/1891 | BIRM |
| Allium ampeloprasum | IE, VCH16 West Galway, Roundstone | B King | Botanical Exchange Club of The British Isles Augustin Ley Harry Corbyn Levinge | 7/1892 8/1892 | BIRM |
| Arabis hirsuta | IE, VCH16 West Galway, Roundstone | George Claridge Druce | Botanical Exchange Club of The British Isles Druce Herbarium, Oxford Augustin Ley | 9/1906 | BIRM |
| Asplenium adiantum-nigrum | IE, VCH16 West Galway, Roundstone | Edward Francis Linton | Augustin Ley | 2/8/1885 | BIRM |
| Eleocharis multicaulis | IE, VCH16 West Galway, Roundstone | Edward Francis Linton | Botanical Exchange Club of The British Isles Augustin Ley Edward Francis Linton | 13/8/1885 | BIRM |
| Erica mackaiana | IE, VCH16 West Galway, Roundstone | William Richardson Linton | Botanical Exchange Club of The British Isles Augustin Ley Edward Francis Linton | 13/8/1885 | BIRM |
| Erica mackaiana | IE, VCH16 West Galway, Roundstone | J Kelly | Botanical Exchange Club of The British Isles Augustin Ley William Richardson Linton | 9/1888 | BIRM |
| Euphrasia brevipila | IE, VCH16 West Galway, Roundstone | James Walter White | Botanical Exchange Club of The British Isles Augustin Ley | 21/8/1907 | BIRM |
| Najas flexilis | IE, VCH16 West Galway, Roundstone | Samuel Alexander Stewart | Augustin Ley | 15/8/1877 | BIRM |
| Potamogeton natans | IE, VCH16 West Galway, Roundstone | Edward Francis Linton | Botanical Exchange Club of The British Isles Augustin Ley Edward Francis Linton | 8/8/1885 | BIRM |
| Senecio jacobaea | IE, VCH16 West Galway, Roundstone | William Richardson Linton | Augustin Ley William Richardson Linton | 2/8/1885 | BIRM |
| Tripleurospermum maritimum subsp. vinicaule | IE, VCH16 West Galway, Roundstone | Augustin Ley | Augustin Ley Edward Francis Linton | 12/8/1885 | BIRM |
| Daboecia cantabrica | IE, VCH16 West Galway, Recess | | Augustin Ley | 28/5/1900 | BIRM |
| Apium nodiflorum x inundatum = A. x moorei | IE, VCH16 West Galway, Portumna | William Richardson Linton | Botanical Exchange Club of The British Isles Augustin Ley William Richardson Linton | 5/8/1885 | BIRM |
| Hypericum elodes | IE, VCH16 West Galway, Oughterard | Augustin Ley | Augustin Ley | 10/9/1867 | BIRM |
| Rhynchospora alba | IE, VCH16 West Galway, Oughterard | Augustin Ley | Augustin Ley | 11/9/1867 | BIRM |
| Gentianella campestris | IE, VCH16 West Galway, Maam Crossroads | Augustin Ley | Augustin Ley | 11/9/1867 | BIRM |
| Carex aquatilis | IE, VCH16 West Galway, Maam | Edward Shearburn Marshall | Botanical Exchange Club of The British Isles Augustin Ley | 3/7/1895 | BIRM |
| Carex hostiana var. sterilis | IE, VCH16 West Galway, Maam | Edward Shearburn Marshall | Botanical Exchange Club of The British Isles Augustin Ley | 5/7/1895 | BIRM |
| Juncus bulbosus | IE, VCH16 West Galway, Maam | Edward Francis Linton | Botanical Exchange Club of The British Isles Augustin Ley Edward Francis Linton | 13/8/1885 | BIRM |
| Potamogeton natans x gramineus = P. x sparganiifolius | IE, VCH16 West Galway, Maam | William Richardson Linton | Botanical Exchange Club of The British Isles Augustin Ley William Richardson Linton | 13/8/1885 | BIRM |
| Samolus valerandi | IE, VCH16 West Galway, Maam | Augustin Ley | Augustin Ley | 11/9/1867 | BIRM |