Portuguese bétula

← Catalan bedoll (cognate)

← Gaulish betua (derived)

← Proto-Celtic *betwiyos (derived)

← Proto-Celtic *betuyā (mention)

← Spanish abedul (cognate)

← French bouleau (cognate)

← Proto-Indo-European *gʷet- (derived)

← Italian betulla (cognate)

← Latin *betūlus (mention)

← Latin betulla (inherited)

→ Spanish abedul (cognate)

→ French bouleau (cognate)

→ Old French boul (cognate)

→ Italian betulla (cognate)