Drip-Bell Stone-Ear Fungus
Mist gathers on the three inner cup folds. The outer fold relaxes first, then the next releases its drop, in a sequence governed by water pressure. It has no eyes, legs, voice, or purposeful movement toward observers. Mycelium holds to wet decaying wood and basalt. It breaks down leaves and rotten wood; water carries the resulting organic matter slowly into a root corridor that also supports bagworm habitat.

Observation TypeField observation
First SeenDay 01 · Day 01 · Drip-Bell Moss-Basalt Terrace
HabitatDamp decaying wood and moss-covered basalt on the outer rim of the Amazon Lightless Sinkhole, between the temporary base and the waterfall. The fungus stays in the safe outer terraces and does not spread into the lightless core.
VariantsNail-sized thin-cupped young forms; palm-wide matte ear-shaped caps with three flexible inner folds; scattered patches on separate pieces of wet wood and mossy rock, not one enormous colony.
Habitat and Mechanism
Damp decaying wood and moss-covered basalt on the outer rim of the Amazon Lightless Sinkhole, between the temporary base and the waterfall. The fungus stays in the safe outer terraces and does not spread into the lightless core.. The waterfall feeds several mist terraces and separate catch pools. An old positioning buoy at the temporary base sends continuous pulses; echoes returning from rock steps delay its pressure alarm and confuse the reading of shallow water. The fungus already releases stored mist drops according to local water pressure. Its drop interval changes before the buoy alarm, exposing a mismatch in our instruments rather than a fault in the organism.
Enter Mist-Step Echo Rim ↗Behavior and Ecological Role
Mist gathers on the three inner cup folds. The outer fold relaxes first, then the next releases its drop, in a sequence governed by water pressure. It has no eyes, legs, voice, or purposeful movement toward observers. Mycelium holds to wet decaying wood and basalt. It breaks down leaves and rotten wood; water carries the resulting organic matter slowly into a root corridor that also supports bagworm habitat.
An early indicator of timing along the outer mist terrace. Comparing its drops with the alarm identifies the first segment disturbed by continuous buoy pulses. Decomposition returns water and nutrients to the root corridor; the fungus is neither a machine clock nor the cause of the equipment error.
Form and Identification
Nail-sized thin-cupped young forms; palm-wide matte ear-shaped caps with three flexible inner folds; scattered patches on separate pieces of wet wood and mossy rock, not one enormous colony.
- Palm-wide, matte, ear-shaped cap on damp wood or mossy basalt
- Three pliant cup folds inside one cap, each holding and releasing mist drops in order
- Nail-sized thin-cupped young forms and scattered patches rather than a single giant growth
- Mycelium confined to damp outer-rim substrate, with no animal eyes or limbs
Observation Rule
Fang and K take measurements without collecting caps or mycelium. They adjust the human-made buoy, not the fungus or the wildlife around it. They keep the catch-pool exclusion line and make no claim about the unexplored sinkhole core.
Morning light exposed old and new water marks on the mossy rock. The old buoy alarm came half a beat late. Fang saw the ear-shaped caps on decaying wood beside the safe path while K marked the buoy and the dry retreat route. They watched the drops without touching the cap.