Where does “ffiolredyn brau” come from?

ffiolredyn brau (Welsh) comes from Welsh ffiolredyn, from Welsh ffiol, from Middle Welsh fiol, from Middle English fiole, from Old French fiole, from Late Latin fiola, from Latin phiala, from Ancient Greek φιάλη — round and shallow bowl, saucer, or pan.

ffiolredyn brau (Welsh): brittle bladder-fern (Cystopteris fragilis)

Definitions

brittle bladder-fern (Cystopteris fragilis)

Ancestry of “ffiolredyn brau”, step by step

ffiolredyn brau traces back through two separate lines of ancestry.

via Welsh ffiolredyn

Step	Language	Word	Meaning
1	Welsh	ffiolredyn	bladder ferns (Cystopteris)
2	Welsh	ffiol	phial, vial
3	Middle Welsh	fiol	—
4	Middle English	fiole	A receptacle, vial, or bottle or diminutive size;...
5	Old French	fiole	vial, phial
6	Late Latin	fiola	vial, phial
7	Latin	phiala	saucer; a censer, thurible
8	Ancient Greek	φιάλη	round and shallow bowl, saucer, or pan

via Welsh brau

Step	Language	Word	Meaning
1	Welsh	brau	brittle, fragile, frail, weak
2	Proto-Celtic	bruseti	to break
3	Proto-Indo-European	bʰrews-	to break

Every word from Ancient Greek φιάλη →Every word from Latin phiala →Every word from Late Latin fiola →