Horsetail — renal signature
jointed stalk and urinary lore
Horsetail appears in signature-oriented herbals as a plant associated with urinary and connective-tissue themes, in part through its segmented, jointed form. The lower-abdominal marker is an editorial target-organ projection of that lore and must not be read as a renal anatomy diagram.
Point 5 of 6 in Doctrine of Signatures
Cross-tradition overlaps
No overlapping points are registered for this point.
Sources
Paracelsus, Paragranum (primary)
Paragranum discusses the signatura as a way of reading the hidden virtue of natural things; see Book IV, the discussion of signatures and external signs.
Roy Porter, The Greatest Benefit to Mankind: A Medical History of Humanity (scholarly_modern)
Historical account of early-modern European medicine and Paracelsian natural philosophy; see the chapters on Renaissance medicine and Paracelsianism.