Cephalanthera longifolia – Narrow-leaved Helleborine – also as Red Helleborine a large distribution range
as Narrow-leaved Helleborine found throughout the European continent, North Africa and Iran.
Cephalanthera longifolia – Narrow-leaved Helleborine
In Norway’s Narrow-leaved Helleborine sparingly in very scattered areas in a belt from Buskerud and North along the coast to South Trondelag.
Narrow-leaved helleborine is not very nutrient demanding, growing somewhat moister and usually more shaded than Red helleborine. It performs best in warm habitats in south-facing hillsides preferably somewhat alkaline soil with thermophilic deciduous and is usually not far from the sea, but in the interior of Telemark grow up to 500 meters above sea level on a southern slope in Hjartdal in Telemark.
Narrow-leaved Helleborine blooms in spring when Convallaria majalis has begun to bloom in late May or first of June. It can form large populations and is a wonderful sight in the woodland floor where they are standing with their white and smelling flowers that do not open fully. It will often seed capsules than Red Helleborine and grows up to 60 cm high with many long leaves. I’ve seen Narrow-leaved Helleborine which has established itself quickly in road shoulders, and in some places very exposed to the sun. I also observed newly established seedlings at landfill sites with newly filling soil where Narrow-leaved Helleborine is found in wooded areas nearby, and I have also seen that it has established itself in uncared gardens. As with several of our orchids, some human activities also give this species better conditions.
Protected under the Nature Diversity Act and stands as endangered on the Norwegian Red List.