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| Author(s) [A-Z] | Year [ascending] | Title | Type | Journal | Citation |
| Hobson, D.D. | 1991 | The status of Populus nigra L. in the Republic of Ireland | Journal | Watsonia | Details... |
| Hong, D.-Y. | 1991 | A biosystematic study on Ranunculus subgenus Batrachium in S Sweden | Journal | Nordic J. Bot. | Details... |
| Jalas, J. & Suominen, J. (eds) | 1991 | Atlas Florae Europaeae 9: Paeoniaceae to Capparaceae | Book | | Details... |
| Jermy, A.C. & Camus, J. | 1991 | The illustrated field guide to ferns and allied plants of the British Isles | Book | | Details... |
| Johnston, A. | 1991 | Junior Excursion | Journal | Proc. Belf. Nat. Fld. Club | Details... |
| Kang, H. & Primack, R.B. | 1991 | Temporal variation of flower and fruit size in relation to seed yield in celandine poppy (Chelidonium majus; Papaveraceae) | Journal | Amer. J. Bot. | Details... |
| Kitching, J.A. | 1991 | Introduction | Chapter | | Details... |
| Lack, A.J. & Diaz, A. | 1991 | The pollination of Arum maculatum L. - a historical review and new observations | Journal | Watsonia | Details... |
| Little, C. | 1991 | Ecology of the rocky intertidal zone | Chapter | | Details... |
| Long, D.G. & Blockeel, T.L. | 1991 | | Journal | Bull. Brit. Bryol. Soc. | Details... |
| Macdonald, I.A.W., Thebaud, C., Strahm, W.A. & Strasberg, D. | 1991 | Effects of alien plant invasions on native vegetation remnants on La Reunion (Mascarene Islands, Indian Ocean) | Journal | Env. Cons. | Details... |
| Martin, W.L. | 1991 | Survey of hay meadows in the area of West Corrib, Co. Galway | Journal | Ir. Nat. J. | Details... |
| Minchin, A. | 1991 | Further distributional records of the adventive brown alga Colpomenia peregrina (Phaeophyta) in Ireland | Journal | Ir. Nat. J. | Details... |
| Myers, A.A., Little, C., Costello, M.J. & Partridge, J.C. | 1991 | The ecology of Lough Hyne. Proceedings of a conference 4-5 September, 1990 | Book | | Details... |
| Nash, D.W. | 1991 | New vice-county records for North Tipperary (H10) | Journal | Ir. Nat. J. | Details... |
| Neeson, E. | 1991 | A history of Irish forestry | Book | | Details... |
| Nelson, E.C. | 1991 | Review: 'Heather in England and Wales' ed. R.T. Bunce | Journal | Bull. Ir. biogeog. Soc. | Details... |
| Nelson, E.C. & Walsh, W.F. | 1991 | The Burren: a companion to the wildflowers of an Irish limestone wilderness | Book | | Details... |
| Nixon, J.M. | 1991 | Biological Flora of the British Isles no. 173. Avenula (Dumort.) Dumort | Journal | J. Ecol. | Details... |
| Northridge, R.H. | 1991 | Chenopodium capitatum in Co. Fermanagh | Journal | Ir. Nat. J. | Details... |
5058 references found.