Pseudo-Cyprian

Pseudo-Cyprian is the conventional designation for the anonymous authors of Latin works falsely attributed to Cyprian of Carthage. These works do not have a common transmission history. Most are not forgeries, but were texts mistakenly attributed to Cyprian from an early date in their transmission. In many cases the works were taken to be authentic until modern times.
The Pseudo-Cyprianic corpus can be divided into four groups. The first group is a set of treatises that was copied from an early date alongside authentic letters and became part of larger letter collections, acquiring Cyprianic attribution along the way. These include:

De laude martyrii, mentioned in a stichometry of a Cyprianic manuscript from 365
De rebaptismate
De aleatoribus
De duobus montibus Sina et Sion
De centesima, sexagesima, tricesima
Ad Vigilium episcopum de Judaica incredulitate
De bono pudicitiae, now ascribed to Novatian
De spectaculis, now ascribed to Novatian
Adversus Judaeos, also mentioned in the stichometry of 365
Ad Novatianum
Ad plebem Carthaginis, actually a Donatist forgery

The second group consists of late antique texts that circulated independently of Cyprian's authentic letters. It includes:

Exhortatio de paenitentia
Carmen ad quendam senatorem
Carmen ad Flavium Felicem de resurrectione mortuorum
Hymnus de pascha or De cruce Domini
De pascha computus
Cena Cypriani
two prayers, called Oratio I and II

The third group consists of texts that only came to be attributed to Cyprian at a relatively late date. It includes:

Ad Turasium, attributed to Cyprian from the 11th century, also attributed to Jerome
De singularitate clericorum, attributed to Cyprian in the 12th century
Expositio symboli, actually written by Rufinus of Aquileia, mistakenly attributed to Cyprian from the 12th century
De duodecim abusivis saeculi, a 7th-century work attributed to Cyprian during the Carolingian Renaissance, sometimes attributed to Augustine of Hippo
De voluntate Dei, sermon from a single manuscript of the 8th or 9th century

The fourth group consists of texts first attributed to Cyprian only in printed editions of his works. It includes:

Revelatio capitis beati Johannis Baptistae, published in the first edition of Cyprian's works by Giovanni Andrea Bussi in 1471
Ad Fortunatum de duplici martyrio, published by Desiderius Erasmus in 1530 and probably also forged by him
several works of Arnold of Bonneval were published under Cyprian's name for better sales and sometimes taken as authentic by later editors

Two works attributed to Cyprian are of disputed authenticity:

Quod idola dii non sint, not generally accepted as Cyprian's
Ad Silvanum, a letter that is generally accepted as Cyprian's

In addition, the works of Cyprianus Gallus have sometimes been published with those of Cyprian of Carthage, but there is no reason to think the two authors to be the same person.