As William R. Newman has already shown, the alchemical homunculus described in the pseudo-Paracelsian writing De natura rerum was not the only kind of "homunculus" present in the works of (or attributed to) Paracelsus. Two other important kinds of "homunculi" indeed appeared in other treatises: one in De homunculis et monstris and the other in both Vom langen Leben and the Liber de imaginibus. This article focuses on the latter tract and its relationships with De natura rerum. After discussing the authenticity of the Liber de imaginibus, I will provide a brief analysis of its content and discuss the major topics common to the two treatises: the "signatures of things" and the homunculus. By studying the reception of the latter, I will show how the alchemical conception of the homunculus, as explained in De natura rerum, quickly established itself as the most prominent notion despite the fact that the golem-like version of Vom langen Leben and De imaginibus had nearly as much success at first among Paracelsians.