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| Author(s) [A-Z] | Year [ascending] | Title | Type | Journal | Citation |
| Brunker, J.P. | 1937 | Abundance of Spiranthes spiralis (Koch) | Journal | Ir. Nat. J. | Details... |
| Praeger, R.Ll. | 1938 | Spiranthes gemmipara | Journal | Ir. Nat. J. | Details... |
| Belfast Naturalists' Field Club | 1939 | Summer Session: Church Hill Demesne and Maghery | Journal | Proc. Belf. Nat. Fld. Club | Details... |
| Belfast Naturalists' Field Club | 1939 | Summer Session: Magheramorne | Journal | Proc. Belf. Nat. Fld. Club | Details... |
| Grainger, V.F. | 1939 | Irregularity of orchids | Journal | Ir. Nat. J. | Details... |
| Hudson, H.J. | 1943 | Cephalanthera ensifolia in West Mayo | Journal | Ir. Nat. J. | Details... |
| Praeger, R.Ll. | 1943 | Cephalanthera ensifolia in West Mayo | Journal | Ir. Nat. J. | Details... |
| Stelfox, A.W. | 1943 | Cephalanthera ensifolia in West Mayo | Journal | Ir. Nat. J. | Details... |
| Chase, C.D. | 1945 | The marsh orchids of north-east Ireland | Journal | Ir. Nat. J. | Details... |
| Kertland, M.P.H. & Sayers, W.J. | 1945 | Report of Botanical Section | Journal | Proc. Belf. Nat. Fld. Club | Details... |
| Praeger, R.Ll. | 1945 | Marsh orchis and hairy hawkbit in north-east Ireland | Journal | Ir. Nat. J. | Details... |
| Brunker, J.P. | 1946 | Cephalanthera ensifolia in West Mayo | Journal | Ir. Nat. J. | Details... |
| Deane, C.D. | 1947 | Bird's-nest orchis, Neottia nidus-avis Rich. | Journal | Ir. Nat. J. | Details... |
| Heslop-Harrison, J.W. | 1949 | Notes on the dactylorchids of north-western Donegal | Journal | Ir. Nat. J. | Details... |
| Heslop-Harrison, J.W. | 1949 | Orchis cruenta Mull.: a new Irish marsh orchid | Journal | Ir. Nat. J. | Details... |
| Gough, K. & Teacher, D. | 1950 | The distribution of Orchis cruenta Muller | Journal | Ir. Nat. J. | Details... |
| Heslop-Harrison, J.W. | 1950 | Orchis fuchsii Druce subsp. hebridensis (Wilm.) H. Harr. in Co. Kerry | Journal | Ir. Nat. J. | Details... |
| Heslop-Harrison, J.W. | 1950 | Notes on some Irish dactylorchids | Journal | Ir. Nat. J. | Details... |
| Meikle, R.D. | 1950 | Gymnadenia conopsea (L.) R.Br. in Ireland | Journal | Ir. Nat. J. | Details... |
| Webb, D.A. | 1950 | The fly orchid in Leix | Journal | Ir. Nat. J. | Details... |
255 references found.