NZ's strangest stinkhorn, woven like a cage

Size
Height: 5–15 cm
Lifespan
3–7 days
Diet
Saprotrophic. Feeds on decaying organic matter, particularly wood chips, leaf litter and garden mulch. Grows on forest floor in disturbed soils and along forest margins. Breaks down cellulose.
Habitat
Found in leaf litter, mulch and coastal scrub. A creature of wet, warm places where humans and nature overlap. Begins as a ghost egg that bursts into a white, hollow geodesic sphere.
Range
North Island and northern South Island in leaf litter, mulch, coastal scrub and gardens. Most common in lowland areas with warm, wet conditions. Also found in Australia and Chile.
Endemism
Native
Main Threats
None significant. This species is common and adaptable, thriving in disturbed habitats including gardens, parks and roadsides. Population stability is assured by habitat ubiquity.
Population
Not Threatened. Incredibly successful survivors, appearing in massive flushes after warm, wet weather. Common in gardens, parks and native forests throughout North Island and northern South Island.
Conservation Status
Not Threatened
The Basket Fungus is the geometric puzzle of the understory. It is a biological structure that looks more like a 3D-printed soccer ball than a living plant. It begins its life as a 'ghost egg'. This is a smooth, white, leathery ball buried in the mulch. Inside this egg, a compressed lattice of white, spongy tissue waits for a trigger. When the humidity hits a critical point, the egg bursts. The basket inflates with incredible speed. It expands into a hollow, white geodesic sphere. This is made of interconnected hexagonal arms. The structure is a masterpiece of lightweight engineering. It uses the minimum amount of material to create the maximum possible surface area. The design is efficient. The result is striking. This fungus is a mechanical escape artist. Unlike almost every other mushroom, the Basket Fungus does not stay anchored to its roots. Once the lattice has fully expanded, the base of the basket becomes brittle. It snaps. The white sphere is then free to be caught by the wind. It rolls like a ghostly tumbleweed across the forest floor or over a suburban lawn. This mobility is a deliberate dispersal strategy. The inner surfaces of the white arms are coated in a dark, sticky, foul-smelling slime called gleba. This slime smells like rotting meat. It acts as a dinner bell for flies. As the basket rolls and the flies feast, they get the spores stuck to their feet and wings. They carry the fungus's DNA far beyond its original hatching ground. The movement is passive. The distribution is active. Biologically, the Basket Fungus is a specialised saprobe. It is a master at breaking down wood chips and garden mulch. It turns dead cellulose into a high-energy stink-bomb. While it is technically edible in its young egg stage, most people avoid it. It is said to taste like a radish. But its mature form and its overwhelming scent of decay keep it off the dinner plate. The smell is a deterrent. The appearance is a curiosity. It is a fungus that lives fast and dies spectacularly. Within 48 hours of hatching, the white lattice begins to melt. It becomes a grey, translucent puddle. It returns its nutrients to the soil. To see a fresh Basket Fungus sitting on the grass is to see a piece of biological origami. It has mastered the art of being both a static structure and a rolling traveller. The transformation is rapid. The lifespan is brief. The impact is memorable. The sphere is hollow. The arms are fragile. The scent is potent. The flies are numerous. The cycle is complete. The fungus does not care for admiration. It cares for dispersal. It uses the wind. It uses the insects. It uses the decay. It succeeds by being unusual. It persists by being mobile. And that seems to be enough.