Kupruina

Kupruina is a fictional plant species that appears in the fantasy novel "The Serpent's Shadow" by Sarah J. Maas. It is described as a bioluminescent flora that grows in the shadowy depths of the Whispering Woods. The plant emits a soft, ethereal blue light, which serves as a crucial light source for those traversing the otherwise dark forest. Its leaves are said to be broad and waxy, absorbing moisture from the damp air. The glow of the kupruina is not constant but pulses gently, creating a mesmerizing and slightly eerie atmosphere.

In the narrative, kupruina plays a significant role in guiding the protagonist through a perilous journey. The light it provides is not only for visibility but also has a symbolic meaning, representing hope and guidance in a place of despair and danger. Certain characters in the story possess knowledge of how to find and utilize the kupruina, making them valuable guides. The plant's unique properties have also led to speculation among readers about its potential medicinal or magical uses within the fictional world, though these are not explicitly detailed in the novel. The exact biological composition and origin of the kupruina remain a mystery within the context of the story, adding to the mystical allure of the Whispering Woods.