The Cosmic Tree stands among the most densely documented symbols in the depth-psychology corpus, drawing sustained attention from Eliade, Jung, Neumann, Campbell, von Franz, and Edinger across mythological, alchemical, and clinical registers. Eliade grounds the symbol in its shamanic substrate: the World Tree as axis mundi connecting the three cosmic zones — upper, middle, and underworld — and as the medium through which the shaman ascends to receive fateful knowledge. Jung’s treatment, concentrated in ‘The Philosophical Tree,’ subordinates the cosmic-axial dimension to the individuation process, reading spontaneous tree imagery in patients’ dreams and paintings as projections of the self and the opus of psychological transformation; he notes explicitly that the world-tree and world-axis functions recede in alchemical and modern clinical contexts. Neumann situates the Cosmic Tree within Great Mother symbolism, emphasizing the tree goddess’s solar and rebirth associations across Egyptian, Canaanite, and Kabbalistic traditions. Campbell maintains the broadest comparative range, tracing the axial tree through Babylonian, Norse, Hindu, and Mesoamerican mythologies, consistently linking it to the goddess-serpent-renewal complex. Von Franz and Edinger interpret it through an alchemical-psychological lens as the living symbol of gnosis and the individuating self. A key tension runs throughout: whether the symbol’s primary meaning is cosmological (axis mundi, world-center) or psychological (self, individuation process) — a polarity the corpus never fully resolves.