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| Author(s) [A-Z] | Year [ascending] | Title | Type | Journal | Citation |
| O'Shea, N. & Thornton, H.G. | 1984 | Seiridium cardinale (Wagener) Sutton & Gibson (Coryneum cardinale) on Cupressus macrocarpa in Ireland | Journal | Ir. Nat. J. | Details... |
| O'Sullivan, A.M. | 1967 | Gaudinia fragilis (L.) P. Beauv. in Limerick grassland | Journal | Ir. Nat. J. | Details... |
| O'Sullivan, A.M. | 1969 | Proposals for the intensive study of vegetation in Ireland | Journal | Ir. Nat. J. | Details... |
| O'Sullivan, A.M. | 1979 | Occurrence of Datura stramonium L. and other aliens in Irish tillage fields | Journal | Ir. Nat. J. | Details... |
| O'Sullivan, G. | 1986 | Lough Beltra 1984. Proceedings of the 1984 Lough Beltra Workshop, Galway, March 2nd, 1985 | Book | | Details... |
| O'Sullivan, G. | 1986 | Lough Beltra 1985. Proceedings of the 1985 Lough Beltra Workshop, Dublin, 26th March, 1986 | Book | | Details... |
| O'Sullivan, G. | 1987 | Lough Beltra 1986. Proceedings of the 3rd Annual Lough Beltra Workshop, Galway, 25 February 1987 | Book | | Details... |
| O'Sullivan, G. | 1992 | Lough Beltra 1988 - an overview | Chapter | | Details... |
| O'Sullivan, G. & Gillooly, M. | 1989 | Lough Beltra 1987. Proceedings of the 4th Annual Lough Beltra Workshop, Dublin, 23rd March 1988 | Book | | Details... |
| Odum, S. | 1965 | Germination of ancient seeds. Floristical observatons and experiments with archaeologically dated soil samples | Journal | Dan. Bot. Ark. | Details... |
| Ogden, J. | 1974 | The reproductive strategy of higher plants. II. The reproductive strategy of Tussilago farfara L. | Journal | J. Ecol. | Details... |
| Ogle, C.C., Cock, G.D.L., Arnold, G., & Mickleson, N. | 2000 | Impact of an exotic vine Clematis vitalba (F. Ranunculaceae) and of control measures on plant biodiversity in indigenous forest, Taihape, New Zealand | Journal | Austral Ecol. | Details... |
| Ojala, A., Kankaala, P. & Tulonen, T. | 2002 | Growth response of Equisetum fluviatile to elevated CO2 and temperature | Journal | Envir. Expt. Bot. | Details... |
| Olivier, S. | 2001 | The diet to prevent migraine attack. The Times (18 September 2001) Part 2 | Newspaper article | | Details... |
| Olsen, C. | 1921 | The ecology of Urtica dioica | Journal | J. Ecol. | Details... |
| Olson, A.R. | 1990 | Observations on the floral shoots of Montropa hypopitys (Montropaceae) | Journal | Rhodora | Details... |
| Osborne, B.A. & Doyle, G.J. | 1992 | Occurrence and habitat of the spring quillwort Isoetes setacea Lam. in Lough Goller, Co. Clare (H9) | Journal | Ir. Nat. J. | Details... |
| Ottway, B. | 1979 | Gracilaria foliifera an alga new to Ireland | Journal | Ir. Nat. J. | Details... |
| Ottway, B. & MacDonnacha, C. | 1980 | Gracilaria bursa-pastoris in Connemara | Journal | Ir. Nat. J. | Details... |
| Ottway, B., Parker, M., McGrath, D. & Crowley, M. | 1979 | Observations on a bloom of Gyrodinium aureolum Hulbert on the south coast of Ireland, summer 1976, associated with mortalities of littoral and sub-littoral organisms | Journal | Ir. Fish. Invest. | Details... |
5058 references found.