Adda ac Efa

== Welsh == === Etymology === Literally, “Adam and Eve”. === Noun === Adda ac Efa (biblical) Adam and Eve monkshood, aconite (Aconitum napellus) Synonym: cwcwll y mynach early purple orchid (Orchis mascula) Synonym: tegeirian coch y gwanwyn === Mutation === === Further reading === R. J. Thomas, G. A. Bevan, P. J. Donovan, A. Hawke, et al., editors (1950–present), “Adda ac Efa”, in Geiriadur Prifysgol Cymru Online (in Welsh), University of Wales Centre for Advanced Welsh & Celtic Studies