gwlydd melyn Mair

== Welsh == === Alternative forms === gwlydd melynion Mair === Etymology === Literally, “yellow stalks of Mary”. === Noun === gwlydd melyn Mair (plural, singular gwlyddyn melyn Mair m) yellow pimpernel (Lysimachia nemorum) Synonym: trewyn === Mutation === === Further reading === Cymdeithas Edward Llwyd (2016), “Y Bywiadur”, in Llên natur‎[1], retrieved 25 May 2025 R. J. Thomas, G. A. Bevan, P. J. Donovan, A. Hawke, et al., editors (1950–present), “trewyn”, in Geiriadur Prifysgol Cymru Online (in Welsh), University of Wales Centre for Advanced Welsh & Celtic Studies