Schaff, Philip. History of the Christian Church (The Complete Eight Volumes in One). Amazon Kindle Edition, 2014.
Volume 2, Ante-Nicene Christianity A.D. 100-325, “Chapter 13. Ecclesiastical Literature of the Ante-Nicene Age, and Biographical Sketches of the Church Fathers.” sec. 159-204.
§ 163. The Pseudo-Clementine Works.
Schaff notes a number of works falsely attributed to Clement of Rome. Among these are a homily which is orthodox but otherwise uninteresting (Schaff 2014, 20605), two letters about virginity (Schaff 2014, 20613), part of the Apostolical Constitutions, a number of Ebionite homilies, and a number of decretal letters assigning Clement as the successor of Peter to the papacy (Schaff 2014, 20621).
We observe that some of the writings are orthodox and some are heretical. They tend to assert an authority for Clement and for particular doctrines which were never claimed by Clement or during his time.