Where does “*berca” come from?

*berca (Old Dutch) comes from Proto-West Germanic berku, from Proto-Germanic berkō, from Proto-Indo-European bʰerHǵós — birch.

Ancestry of “*berca”, step by step

StepLanguageWordMeaning
1Proto-West GermanicberkuAlternative form of *birkijā; birch
2Proto-Germanicberkōbirch
3Proto-Indo-EuropeanbʰerHǵósbirch

Words derived from “*berca

Every word from Proto-Indo-European bʰerHǵósEvery word from Proto-Germanic berkōEvery word from Proto-West Germanic berku