应该是【paternal】
patriclan 父系氏族
matriclan 母系氏族
maternal
having feelings that are typical of a caring mother towards a child 母亲的；母亲般慈爱的
connected with being a mother 母亲的；作为母亲的
related through the mother's side of the family 母系的；母亲方面的
paternal
connected with being a father; typical of a kind father 父亲的；慈父般的
related through the father's side of the family 父系的