Dactylorhiza purpurella, the northern marsh orchid, is an orchid native to Great Britain, Ireland and Denmark. Two varieties are recognised: \n* Dactylorhiza purpurella var. cambrensis (R.H.Roberts) R.M.Bateman & Denholm - coastal Great Britain and Denmark \n* Dactylorhiza purpurella subsp. purpurella - Ireland and northern Great Britain. Recorded from Co. Donegal in Ireland.