| Neotinea maculata | IE, VCH9 Co. Clare, Ballyvaughan | Harry Corbyn Levinge | Augustin Ley Harry Corbyn Levinge | 18/5/1892 | BIRM |
| Neotinea maculata | IE, VCH9 Co. Clare, Burren | Patrick Bernard O'Kelly | Augustin Ley Harry Corbyn Levinge | 5/1894 | BIRM |
| Neotinea maculata | IE, VCH9 Co. Clare, Glenquin House | Harry Corbyn Levinge | Botanical Exchange Club of The British Isles Augustin Ley Harry Corbyn Levinge | 20/5/1892 | 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 |
| Potamogeton coloratus x berchtoldii = P. x lanceolatus | IE, VCH9 Co. Clare, Cahir River | Patrick Bernard O'Kelly | Dublin Museum Harry Corbyn Levinge Harold Stuart Thompson | 12/7/1894 | BIRM |
| Potamogeton friesii | IE, VCH23 Westmeath, Lough Derravaragh | Harry Corbyn Levinge | | 24/7/1895 | BIRM |
| Potamogeton gramineus | IE, VCH25 Co. Roscommon, River Suck | Harry Corbyn Levinge | Watson Botanical Exchange Club Arthur Bennett Harold Stuart Thompson | 26/7/1891 | BIRM |
| Potamogeton lucens | IE, VCH23 Westmeath, Lough Derravaragh | Harry Corbyn Levinge | Botanical Exchange Club of The British Isles Augustin Ley | 9/8/1892 | BIRM |
| Potentilla fruticosa | IE, VCH9 Co. Clare, Turlough | Harry Corbyn Levinge | Harold Stuart Thompson Harry Corbyn Levinge | 17/5/1892 | BIRM |
| Pyrola rotundifolia | IE, VCH23 Westmeath, Loughanstown | Harry Corbyn Levinge | Harold Stuart Thompson Harry Corbyn Levinge | 21/6/1892 | BIRM |
| 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 |
| Saxifraga rosacea | IE, VCH9 Co. Clare, Black Head | Harry Corbyn Levinge | Botanical Exchange Club of The British Isles Augustin Ley | 19/5/1892 | BIRM |
| Saxifraga rosacea | IE, VCH9 Co. Clare, Black Head | Harry Corbyn Levinge | Augustin Ley Harry Corbyn Levinge | 21/6/1891 | BIRM |
| Scrophularia auriculata | IE, VCH23 Westmeath, Lough Derravaragh | Harry Corbyn Levinge | Botanical Exchange Club of The British Isles Augustin Ley | 13/9/1895 | BIRM |
| Sesleria caerulea | IE, VCH15 South-east Galway, Castle Taylor | Harry Corbyn Levinge | Augustin Ley Harry Corbyn Levinge | 16/5/1892 | BIRM |
| Thalictrum minus | IE, VCH9 Co. Clare, Black Head | Patrick Bernard O'Kelly | Harold Stuart Thompson Harry Corbyn Levinge | 23/6/1893 | BIRM |
| Ulmus diversifolia | IE, Ambiguous locality (IE), Lismore Castle | Harry Corbyn Levinge | Augustin Ley | 8/1878 | BIRM |
| Vaccinium oxycoccos | IE, VCH23 Westmeath, Quarry Bog | Harry Corbyn Levinge | Augustin Ley Harry Corbyn Levinge | 5/7/1891 | BIRM |
| Veronica scutellata | IE, VCH9,VCH15, Garryland Wood | Patrick Bernard O'Kelly | Botanical Exchange Club of The British Isles Augustin Ley Harry Corbyn Levinge | 14/8/1893 | BIRM |
| Viola persicifolia | IE, VCH16 West Galway, Newtown Gort | Patrick Bernard O'Kelly | Harold Stuart Thompson Harry Corbyn Levinge | 19/6/1894 | BIRM |
| Carex appropinquata | IE, VCH23 Westmeath, Bog of Lynn | Harry Corbyn Levinge | Frederick Janson Hanbury Harry Corbyn Levinge | 6/6/1892 | BM |
| Carex appropinquata | IE, VCH23 Westmeath, Bog of Lynn | Harry Corbyn Levinge | Frederick Janson Hanbury | 6/6/1892 | BM |
| Carex appropinquata | IE, VCH23 Westmeath, Bog of Lynn | Harry Corbyn Levinge | Harry Corbyn Levinge | 6/6/1892 | BM |
| Carex appropinquata | IE, VCH23 Westmeath, Bog of Lynn | Harry Corbyn Levinge | James Groves | 6/6/1892 | BM |
| Carex appropinquata | IE, VCH23 Westmeath, Ladestown | Harry Corbyn Levinge | Frederick Janson Hanbury Harry Corbyn Levinge | 16/7/1891 | BM |
| Carex appropinquata | IE, VCH23 Westmeath, Ladestown | Harry Corbyn Levinge | Eliza Standerwick Gregory | 16/7/1891 | BM |
| Carex appropinquata | IE, VCH23 Westmeath, Ladestown | Harry Corbyn Levinge | Edward Francis Linton | 16/7/1891 | BM |
| Carex appropinquata | IE, VCH23 Westmeath, Ladestown | Harry Corbyn Levinge | Charles Edgar Salmon Harry Corbyn Levinge | 16/7/1891 | BM |
| Carex appropinquata | IE, VCH23 Westmeath, Lough Ennell | Harry Corbyn Levinge | Eliza Standerwick Gregory Harry Corbyn Levinge | 16/7/1891 | BM |
| Carex appropinquata | IE, VCH23 Westmeath, Lough Ennell | Harry Corbyn Levinge | Harry Corbyn Levinge | 16/7/1891 | BM |
| Carex appropinquata | IE, VCH23 Westmeath, Lough Ennell | Harry Corbyn Levinge | Edward Francis Linton Harry Corbyn Levinge | 16/7/1890 | BM |
| Carex appropinquata | IE, VCH23 Westmeath, Lough Ennell | Harry Corbyn Levinge | Edward Francis Linton Harry Corbyn Levinge | 16/7/1890 | BM |
| 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 appropinquata | IE, VCH23 Westmeath, Lough Ennell | Harry Corbyn Levinge | Eliza Vaughan | 16/7/1891 | BM |
| Carex appropinquata | IE, VCH23 Westmeath, Mullingar, Bog of Lynn | Harry Corbyn Levinge | Edward Francis Linton Harry Corbyn Levinge | 14/6/1895 | BM |
| Carex dioica | IE, VCH23 Westmeath, Donore | Harry Corbyn Levinge | Charles Edgar Salmon Harry Corbyn Levinge Henry Tuke Mennell | 28/5/1895 | BM |
| Carex dioica | IE, VCH23 Westmeath, Lough Derravaragh | Harry Corbyn Levinge | Arthur Bennett | 28/5/1895 | BM |
| Mentha spicata x suaveolens = M. x villosa | GB, VC57 Derbyshire, Matlock | A Steuart Eleonora Armitage Harry Corbyn Levinge | Harry Corbyn Levinge John Durbin Gray | 30/8/1893 | CGE |
| Mentha arvensis x aquatica = M. x verticillata | IE, VCH23 Westmeath, Knockdrin | Harry Corbyn Levinge | | 23/8/1888 | DBN |