the tropical cup fungus found in NZ's north
- Size
- Height: 1–3 cm
- Lifespan
- 5–10 days
- Diet
- Saprotrophic: feeds on decaying wood of native broadleaf trees. Grows on fallen branches, twigs and woody debris in damp, shaded forests. Prefers well-rotted wood.
- Habitat
- Grows on decaying wood in warm, humid forests of upper North Island. Forms small, cup-shaped bright pink to orange-red fruiting bodies on short slender stems, like tiny goblets.
- Range
- Northern North Island, particularly in Northland, Auckland and Coromandel. Most common in warm, humid lowland forests. Also found in tropical Australia, Asia and South America.
- Endemism
- Native
- Main Threats
- None significant. Localised threats include forest clearance and climate change making northern forests cooler or drier.
- Population
- A tropical cup fungus reaching its southern limit in New Zealand. Bright pink to orange-red cups on short stems like tiny goblets. Found only in warm, humid forests of Northland, Auckland and Coromandel.
- Conservation Status
- Not Threatened
It arrives as a shock of colour in the muted greens and browns of the forest floor. The Pekepekekio is a tropical show-off, defined by a hue that seems impossible in the temperate bush. The cup is a shocking pink to brilliant orange-red. It is a tiny goblet, no more than two centimetres across. It sits perched on a slender stem, resembling a miniature champagne flute left behind after a fairy party. The inner surface is smooth and glossy. It looks almost wet. This is where the magic happens. The outer surface tells a different story. It is covered in fine, pale hairs. These give the cup a fuzzy, velvety texture.
Look closely and the simplicity dissolves. The cup is not just a bowl. The edges are often slightly ruffled or curled. The whole structure has a delicate, almost translucent quality when backlit by a shaft of forest sunlight. It looks like something from a coral reef rather than a rotting stick in a New Zealand gully. The visual dissonance is striking. It does not belong here. Yet it persists.
Biologically, this fungus is a latecomer to the decay party. It cannot break down fresh wood on its own. It waits for other, more robust fungi to do the heavy lifting. They soften the timber and break down the tough lignin. Once the wood has been partially rotted, the Pekepekekio moves in. Its fine mycelium threads through the soft, punky remains. It extracts the last remaining nutrients. It is the clean-up crew for the clean-up crew. This niche requires patience. It also requires timing.
The cup shape serves a purpose beyond aesthetics. The spore-producing tissue lines the inside. When the spores are mature, the fungus uses a remarkable mechanism to shoot them into the air. As the cup dries, the cells on the inner surface contract unevenly. This creates tension. When the tension reaches a breaking point, the spores are ejected in tiny puffs. They are visible only with a hand lens. They launch themselves into the air currents. These currents carry them to new branches and new logs. It is a violent act performed in silence.
To find a Pekepekekio is to find a tropical splash of colour in the temperate New Zealand bush. It is a stray from the tropics. It is a warm-weather wanderer that has somehow made a home in the chilly south. But there it is. Bright pink and unapologetic. A tiny goblet of colour on a rotting stick. It reminds us that the forest is always full of surprises if you know where to look. It does not care about our expectations. It simply grows.
No one told it otherwise.