arian Gwion bach

== Welsh == === Etymology === Literally, “small yellow rattle”. === Noun === arian Gwion bach m marsh lousewort (Pedicularis palustris) ==== Synonyms ==== melog y waun === Further reading === Cymdeithas Edward Llwyd (2018), “Y Bywiadur”, in Llên natur‎[1], retrieved 13 Sept 2025.