tafod y ddaear dulas

== Welsh == === Noun === tafod y ddaear dulas m (plural tafodau'r ddaear dulas) dark purple earthtongue (Geoglossum atropurpureum) === Mutation === === Further reading === Cymdeithas Edward Llwyd (2018), “Y Bywiadur”, in Llên natur‎[1], retrieved 16 August 2025.