(Scientific Designation: Maclura lumina | Common Names: The Glow Hedge, Brain Fruit Tree | Charles’s Ledger: Variable-F03)
Botanical Profile: The Living Polymer
Habitat: Grows in dense, impenetrable hedge rows, primarily along riverbanks and marsh edges.
Bioluminescence: The blossoms and heartwood emit a soft, steady violet glow. These hedges serve as natural "night landmarks," marking the transition between safe soil and the deep mire.
The Brain Fruit: Large, crystalline blue fruit known as "The Brains." Unlike its bitter ancestors, the fruit is sweet and citrusy, serving as a primary high-energy food source for the village.
Charles’s Note: "The Weeper is the only reason we don’t lose our feet to the rot. It provides the glue, the light, and the stitches. It is a biological factory masquerading as a hedge."
Physical Characteristics: The Glass Needle
Thorns: The branches are guarded by hollow, glass-like needles. These are incredibly sharp and brittle, designed to break off and deliver an irritant or act as a conduit for the tree's sap.
Violet Sap: A high-viscosity bio-polymer that is UV-reactive. When exposed to the multi-spectrum light of the Prism Sky, it cures into a hard, waterproof, and flexible seal.
Heartwood: Extremely dense and naturally luminescent; it retains its glow for weeks even after being harvested.
Performance Specs: Material Science
UV Sealing: The sap is the village’s primary waterproofing agent. It is used to seal boots, grain storage, and river skiffs. Once "sun-cured," it is impervious to the Neon Rot.
Sutures & Pipettes: The hollow thorns are harvested by Mara for precision medical work. They are used as micro-pipettes for administering doses or as surgical needles for clean stitching.
Ghost Strings: The fibrous inner bark, when treated with cured sap, creates the "Ghost String"—a bowstring that is silent, waterproof, and slightly luminescent.
Charles’s Audit: The Chemical Constant
"You don't just eat the Brains; you use them to keep the darkness at bay. If we didn't have the Weeper's sap, our boots would rot off our feet in a month, and we'd be stitching our wounds with rusted wire. It is the adhesive that holds our survival together. Two, three, five, seven... follow the blue light home." — Charles, The Analyst
Serrated Perimeter: The thicket counts as Difficult Terrain. Any creature that moves more than 10 feet through a Reed patch must succeed on a DC 13 Dexterity save or take 1d4 slashing damage.
Seismic Warning: While within a Reed thicket, creatures have Advantage on Perception checks to detect approaching Large or larger land-based predators.
Structural Reinforcement: Any shield or armor reinforced with Sentinel Reeds gains a +1 bonus to AC against piercing attacks but becomes vulnerable to high-heat/fire damage.