Where does “Juglans” come from?

Juglans (Translingual) comes from Latin iuglans, from Latin Iovis glans — Jupiter's acorn.

Juglans (Translingual): taxonomic name

Definitions

Step	Language	Word	Meaning
1	Latin	iuglans	walnut; walnut tree
2	Latin	Iovis glans	Jupiter's acorn

Juglans — Etymology, Origin & Word History | Etymology Explorer