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| Author(s) [A-Z] | Year [ascending] | Title | Type | Journal | Citation |
| Bonaparte-Wyse, L.H. | 1901 | Sirex gigas L. in Co. Down | Journal | Ir. Nat. | Details... |
| Brenan, S.A. | 1901 | Sphaerotheca mors-uvae in Co. Antrim | Journal | Ir. Nat. | Details... |
| Brenan, S.A. | 1901 | Spring migrants in Co. Antrim | Journal | Ir. Nat. | Details... |
| Brenan, S.A. | 1901 | Plants of Co. Antrim | Journal | Ir. Nat. | Details... |
| Brown, J. | 1901 | Notes on fishes from the Co. Down coast | Journal | Ir. Nat. | Details... |
| Brown, J. | 1901 | Bird notes from the Mourne Mountains | Journal | Ir. Nat. | Details... |
| Campbell, D.C. | 1901 | Arrival of the swift at Londonderry | Journal | Ir. Nat. | Details... |
| Campbell, D.C. | 1901 | Hawfinch near Londonderry | Journal | Ir. Nat. | Details... |
| Cole, G.A.J. | 1901 | Pisolitic iron ore in Lough Neagh | Journal | Ir. Nat. | Details... |
| Colgan, N. | 1901 | Carex aquatilis Wahlb. in County Dublin | Journal | Ir. Nat. | Details... |
| Colgan, N. | 1901 | A new Irish sedge, Carex irrigua | Journal | Ir. Nat. | Details... |
| D'Arcy, C.F. | 1901 | Some notes on the flora of Glenariff, Co. Antrim | Journal | Ir. Nat. | Details... |
| Davies, J.H. | 1901 | Chenopodium ficifolium Sm. in Ireland | Journal | Ir. Nat. | Details... |
| Davies, J.H. | 1901 | Polygonum mite at Lough Neagh | Journal | Ir. Nat. | Details... |
| Davies, J.H. | 1901 | Ditrichum vaginans, a new British moss in Ireland | Journal | Ir. Nat. | Details... |
| Druce, G.C. | 1901 | On some forms of Rhinanthus new to the British Flora | Journal | Ir. Nat. | Details... |
| Fahy, M. | 1901 | Antiquarian and natural history notes of the parish of Duneane and barony of Toome | Journal | Proc. Belf. Nat. Fld. Club | Details... |
| Green, W.A. | 1901 | Amphipeplea (Limnaea) glutinosa in the River Bann | Journal | Ir. Nat. | Details... |
| Green, W.A. | 1901 | New inland station for Hydrobia (Paludestrina) jenkinsi | Journal | Ir. Nat. | Details... |
| Hart, W.E. | 1901 | Peacock butterfly near Derry | Journal | Ir. Nat. | Details... |
3701 references found.