Definition
In Roman civil law, the Publiciana (rendered "Pubuoiana" in some transcriptions, likely a typographical corruption of "Publiciana") was a praetorian action introduced by the praetor Publicius. Its purpose was to allow a person who had lost possession of a thing — before the period of usucaption was complete — to recover that thing as though the full prescriptive period had already run. The praetor granted the action by a legal fiction: the plaintiff was deemed to have held the property long enough to acquire title, even if in fact they had not.
Its effects were broadly analogous to the common law action of trover: recovery of a thing wrongfully withheld, or compensation for its value. The action was available to the bona fide possessor who had received a thing from a non-owner (a non domino) and who, had usucaption run its course, would have become the true owner.
Common Confusion
The term "Pubuoiana" as it appears in the supplemental edition of Black's Law Dictionary (2nd Ed.) is almost certainly a typographical corruption of "Publiciana," specifically the actio Publiciana in rem. Researchers encountering "Pubuoiana" in older texts, indexes, or transcriptions should treat it as an alternate rendering of Publiciana and search accordingly. The two terms refer to the same action. This is not a distinct legal concept.
Why It Matters in Research
Researchers working in Roman law sources, civil law jurisdictions, or comparative property law will encounter the actio Publiciana under several spellings and transliterations, particularly in older printed editions where typeface degradation or compositor error produced corrupted forms. "Pubuoiana" is one such form.
The significance of the action itself extends beyond Roman law antiquarianism. The Publiciana action underpins concepts of equitable ownership and bona fide possession that persist in civil law systems — notably in Scots law, Louisiana property law, and South African common law — where the distinction between real ownership and possessory title remains doctrinally active. Researchers tracing the roots of possessory remedies or the doctrine of usucaption in civilian jurisdictions should follow the Publiciana action through its reception in ius commune sources and into modern civil codes.
The comparison to trover drawn in Black's is instructive but imprecise. Trover was a common law action for the conversion of personal property; the Publiciana was an action in rem grounded in fictional completion of usucaption. The analogy is functional, not structural, and should not be pressed too far in comparative analysis.
Historical Dictionary Support
Black's Law Dictionary (2nd Ed., Supplemental) provides the only dictionary entry in the Law Mind corpus for this term. The entry correctly identifies the action's praetorian origin, its connection to the praetor Publicius, and its functional similarity to trover. It cites Mackeldey's Roman Law (§ 298), the Institutes (4, 6, 4), and the Digest (6, 2, 1, 16) — all legitimate primary and secondary sources for the action. These citations are genuine and useful starting points.
What the entry does not convey is the theoretical sophistication of the action: the Publiciana occupied a precise doctrinal space between possessory interdicts (which protected current possession without inquiry into title) and the rei vindicatio (which required proof of full dominium). The Publiciana was the intermediate remedy — available to the equitable owner who could not yet prove legal title. That layered structure is invisible in Black's brief treatment and must be recovered from the primary civil law sources cited.
Jurisdictional Note
The actio Publiciana has no direct analog in English common law jurisdictions. Its influence is felt primarily in mixed and civil law systems. Louisiana, as a civil law jurisdiction within the United States, recognizes possessory and petitory actions with conceptual roots in Roman law, though the Publiciana is not expressly named in the Louisiana Civil Code.