Old Portuguese erva

← Old French erbe (cognate)

← Proto-Indo-European *gʰreH₁- (derived)

← Proto-Indo-European *g(')herə- (mention)

← Latin herba (inherited)

← Mozarabic yerba (cognate)

← Old Spanish yerba (cognate)

← Old Occitan erba (cognate)

→ Galician herba (inherited)

→ Portuguese erva (inherited)