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| Author(s) [A-Z] | Year [ascending] | Title | Type | Journal | Citation |
| Anon. | 1899 | Grey phalarope in Co. Armagh | Journal | Ir. Nat. | Details... |
| Druce, G.C. | 1899 | Notes on the flora of the counties of Armagh, Down, Antrim and Derry | Journal | Ir. Nat. | Details... |
| Johnson, W.F. | 1899 | Entomological notes from Poyntzpass, etc. | Journal | Ir. Nat. | Details... |
| Johnson, W.F. | 1899 | Macroglossa stellatarum and M. bombyliformis at Poyntzpass | Journal | Ir. Nat. | Details... |
| Johnson, W.F. | 1899 | Spring migrants at Poyntzpass | Journal | Ir. Nat. | Details... |
| Praeger, R.Ll. | 1899 | Notes on 'Cybele Hibernica' | Journal | Ir. Nat. | Details... |
| Davies, J.H. | 1900 | Some mosses from North-East Ireland | Journal | Ir. Nat. | Details... |
| Davies, J.H. | 1900 | Botanical notes from north Ireland | Journal | Ir. Nat. | Details... |
| Druce, G.C. | 1900 | Irish Rubi | Journal | Ir. Nat. | Details... |
| Johnson, W.F. | 1900 | Stachys betonica Benth., in Co. Armagh | Journal | Ir. Nat. | Details... |
| Johnson, W.F. | 1900 | Spring migrants at Poyntzpass | Journal | Ir. Nat. | Details... |
| Linton, E.F. | 1900 | Distribution of the Alchemilla vulgaris group in Ireland | Journal | Ir. Nat. | Details... |
| Praeger, R.Ll. | 1900 | Flora of Co. Armagh | Journal | Ir. Nat. | Details... |
| Stewart, S.A. | 1900 | The march of Matricaria discoidea | Journal | Ir. Nat. | Details... |
| Belfast Naturalists' Field Club | 1901 | Summer Programme: Armagh | Journal | Proc. Belf. Nat. Fld. Club | Details... |
| Davies, J.H. | 1901 | Polygonum mite at Lough Neagh | Journal | Ir. Nat. | Details... |
| Johnson, W.F. | 1901 | Cerastis ligula, Eep., at Poyntzpass, Ireland | Journal | Ent. Monthly Mag. | Details... |
| Rogers, W.M. | 1901 | Some north-east Ireland Rubi | Journal | Ir. Nat. | Details... |
| Davies, J.H. | 1902 | Notes on some mosses in Northern Ireland | Journal | Ir. Nat. | Details... |
| Davies, J.H. | 1902 | Mosses of Northern Ireland | Journal | Ir. Nat. | Details... |
279 references found.