| Plants : Orchidaceae | Ferns and Flowering Plants |
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| Cephalanthera longifolia |
Description: This orchid is called the Narrow-Leaved Helleborine or the Long-Leaved Helleborine and is extinct in Northern Ireland: the photograph was taken in Co. Clare.
It was known to occur in damp woodland about the north-east corner of Lough Neagh and Muckamore areas until about 1840. It had also been found in 1694 by William Sherard at Derry Lough near Ballynahinch - one of the earliest records for any plant species in Northern Ireland.
All names: Cephalanthera longifolia (L.) Fritsch; Cephalanthera ensifolia (Schmidt) Rich.
Distribution Map from NBN: Cephalanthera longifolia at National Biodiversity Network mapping facility, data for UK.
iNaturalist: Cephalanthera longifolia at iNaturalist World Species Observations database.
| Hackney, P., 2026. Cephalanthera longifolia. (L.) Fritsch. [In] Flora of Northern Ireland. https://habitas.org/flora/species.php?item=2286. Accessed on 2026-11-02. |