+ | Carex appropinquata | IE, VCH23 Westmeath, Mullingar, Bog of Lynn | Harry Corbyn Levinge | Charles Bailey Harry Corbyn Levinge | 14/6/1895 | MANCH |
| Inula salicina | IE, VCH15 South-east Galway, Lough Derg | Edward Francis Linton | Botanical Exchange Club of The British Isles Charles Bailey Harry Corbyn Levinge | 14/7/1895 | MANCH |
+ | Myriophyllum verticillatum | IE, VCH20 Co. Wicklow, nr Mullingar | Harry Corbyn Levinge | Botanical Exchange Club of The British Isles Charles Bailey Harry Corbyn Levinge | 22/7/1895 | MANCH |
+ | Potamogeton friesii | IE, VCH20 Co. Wicklow, Loch Derravaragh | Harry Corbyn Levinge | Charles Bailey Harry Corbyn Levinge | 24/7/1895 | MANCH |
| Potamogeton lucens | IE, VCH23 Westmeath, Lough Derravaragh | Harry Corbyn Levinge | | 9/8/1892 | MANCH |
| Rumex crispus x obtusifolius = R. x pratensis | IE, VCH23 Westmeath, Knockdrin | William Richardson Linton | Botanical Exchange Club of The British Isles Charles Bailey Harry Corbyn Levinge | 27/7/1895 | MANCH |
| Rumex crispus x obtusifolius = R. x pratensis | IE, VCH23 Westmeath, Knockdrin | William Richardson Linton | Botanical Exchange Club of The British Isles Charles Bailey Harry Corbyn Levinge | 27/7/1895 | MANCH |
| Rumex crispus x obtusifolius = R. x pratensis | IE, VCH23 Westmeath, Knockdrin | William Richardson Linton | Botanical Exchange Club of The British Isles Charles Bailey Harry Corbyn Levinge | 27/7/1895 | MANCH |
+ | Utricularia intermedia | IE, VCH16 West Galway, Connemara | Harry Corbyn Levinge | | 17/9/1891 | MANCH |
| Mentha arvensis x spicata = M. x gracilis | GB, VC57 Derbyshire, Miller's Dale | Harry Corbyn Levinge | | 7/9/1893 | LIV |
| Baldellia ranunculoides | GB, VC49 Caernarvonshire, Criccieth | Harry Corbyn Levinge | James Sykes Gamble | 8/1884 | K |
| Baldellia ranunculoides | IE, VCH23 Westmeath | Harry Corbyn Levinge | James Sykes Gamble | 16/9/1888 | K |
| Callitriche stagnalis | GB, VC49 Caernarvonshire, Criccieth | Harry Corbyn Levinge | James Sykes Gamble | 8/1884 | K |
| Chaenorhinum minus | IE, VCH20 Co. Wicklow, Killoughter | Harry Corbyn Levinge | Harry Corbyn Levinge | 7/10/1890 | K |
| Clinopodium ascendens | IE, VCH2 North Kerry, Muckross | Harry Corbyn Levinge | Harry Corbyn Levinge | 9/1890 | K |
| Festuca arundinacea | IE, VCH23 Westmeath, Knock Drui, Co. West Meath | Harry Corbyn Levinge | | 4/8/1884 | K |
| Galeopsis tetrahit | GB, VC49 Caernarvonshire, Criccieth | Harry Corbyn Levinge | James Sykes Gamble | 8/1884 | K |
| Glebionis segetum | GB, VC49 Caernarvonshire, Portmadoc | Harry Corbyn Levinge | James Sykes Gamble | 9/9/1884 | K |
| Habenaria albida | IE, VCH9 Co. Clare, Ballyvaughan | Harry Corbyn Levinge | Arthur Bennett | 18/5/1892 | K |
| Habenaria albida | IE, VCH9 Co. Clare, Lisdoonvarna | Harry Corbyn Levinge | | 23/6/1891 | K |
| Habenaria viride | IE, VCH9 Co. Clare, Lisdoonvarna | Harry Corbyn Levinge | Charles Baron Clarke | 23/6/1891 | K |
| Marrubium vulgare | IE, VCH9 Co. Clare, Black Head | Harry Corbyn Levinge | | 21/6/1891 | K |
| Marrubium vulgare | IE, VCH9 Co. Clare, Black Head | Harry Corbyn Levinge | Harry Corbyn Levinge | 21/6/1891 | K |
| Mentha spicata | IE, VCH23 Westmeath, River Gaine | Harry Corbyn Levinge | James Sykes Gamble | 27/9/1888 | K |
| Oenanthe fistulosa | IE, VCH20 Co. Wicklow, The Murrough | Harry Corbyn Levinge | | 10/7/1890 | K |
| Oenanthe fistulosa | IE, VCH23 Westmeath, Lough Ennell | Harry Corbyn Levinge | Harry Corbyn Levinge | 6/8/1891 | K |
| Plantago maritima | GB, VC49 Caernarvonshire, Criccieth | Harry Corbyn Levinge | James Sykes Gamble | 8/1884 | K |
| Scutellaria galericulata | GB, VC49 Caernarvonshire, Criccieth | Harry Corbyn Levinge | | 8/1854 | K |
| Scutellaria minor | GB, VC49 Caernarvonshire, Criccieth | Harry Corbyn Levinge | James Sykes Gamble | 8/1884 | K |
| Sium latifolium | IE, VCH9 Co. Clare, Ennis | Patrick Bernard O'Kelly | Harry Corbyn Levinge Patrick Bernard O'Kelly | 12/8/1891 | K |
| Sium latifolium | IE, VCH9 Co. Clare, Ennis | Patrick Bernard O'Kelly | Harry Corbyn Levinge | 13/7/1891 | K |
| Stellaria palustris | IE, VCH23 Westmeath, Lough Ennell | Harry Corbyn Levinge | | 14/8/1891 | K |
| Stellaria palustris | IE, VCH23 Westmeath, River Brosna | Harry Corbyn Levinge | | 6/8/1891 | K |
| Veronica montana | IE, VCH23 Westmeath, Knockdrin | Harry Corbyn Levinge | Harry Corbyn Levinge | 4/1890 | K |
| Veronica scutellata | GB, VC49 Caernarvonshire, Criccieth | Harry Corbyn Levinge | James Sykes Gamble | 8/1884 | K |
| Carex diandra | IE, VCH23 Westmeath, Scragh Bog | Harry Corbyn Levinge | | 26/6/1890 | GALW |
| Ceratophyllum demersum | | Harry Corbyn Levinge | Dublin Museum Harry Corbyn Levinge | 13/9/1895 | GALW |
| Ceratophyllum demersum | IE, VCH23 Westmeath, Lough Derravaragh | Harry Corbyn Levinge | Dublin Museum Irish National Herbarium Glasnevin Dublin Harry Corbyn Levinge | 9/8/1892 | GALW |
| Ceratophyllum demersum | IE, VCH23 Westmeath, Lough Derravaragh | Harry Corbyn Levinge | National Museum Ireland Harry Corbyn Levinge Robert Lloyd Praeger | 9/8/1892 | GALW |
| Ceratophyllum demersum | IE, VCH23 Westmeath, Lough Derravaragh | Harry Corbyn Levinge | Dublin Museum Harry Corbyn Levinge | 24/7/1895 | GALW |