turns bright blue when you bruise it
- Size
- Width: 3–8 cm
- Lifespan
- 1 years
- Diet
- Saprotrophic. Feeds on dead wood of native and introduced trees such as beech, manuka and kanuka.
- Habitat
- Grows on dead wood in native forests. Forms white to cream brackets that turn bright blue when bruised or cut.
- Range
- Throughout North and South Islands on dead wood in native forests, particularly beech and podocarp forests.
- Endemism
- Endemic
- Main Threats
- Habitat loss from forest clearance. Removal of dead wood from forest floors reduces substrate availability.
- Population
- A white bracket fungus that bruises bright blue when touched. Found on dead wood in native forests nationwide.
- Conservation Status
- Not Threatened
- Human Risk
- harmless
- Handling Note
- inedible but harmless, do not eat
- Conservation Note
- Endemic fungus; not assessed by NZTCS as fungi are generally outside the scope of current threat classifications.
- Te Ao Māori
- In Māori tradition, the Blueing Bracket was the mushroom that changed colour when touched. It was a sign that the forest was alive. It could feel. Its blue bruising was a way for the fungus to speak. It said 'I am here, do not eat me'. The message was visual. The response was respect. The connection was tangible. The forest communicated through change. The fungus demonstrated sensitivity. The tradition acknowledged this interaction. The name may vary. The observation remains. The blue stain is a signal. It is a boundary. It is a warning. The culture recognises the life in the wood. The fungus embodies this vitality. It reacts to presence. It asserts its being. The lesson is clear. The forest is aware. The Blueing Bracket proves it. The tradition holds this truth. The fungus remains a teacher.
The colour-changer of the forest floor. A fungus with a party trick. The fruiting body is a bracket. It measures three to eight centimetres across. It is white to cream. It is soft and spongy when fresh. The upper surface is covered in fine hairs. It is often zoned with concentric rings of darker cream. The underside is covered in tiny, angular pores. They are white to cream. It looks ordinary. This is a deception.
The magic happens when it is touched. Bruise the flesh. Cut it. Scratch it. It turns bright blue. Not pale blue. Not grey-blue. It is a vivid, startling, electric blue. The colour appears within seconds. It spreads through the damaged tissue like a wave. It is a chemical reaction. It is the oxidation of a compound called variegatic acid. This is the same reaction that makes some boletes turn blue. A fungus that bleeds blue when hurt. The visual is immediate. The cause is chemical.
Biologically, the Blueing Bracket is a saprotroph. It feeds on dead wood. It is a decomposer. It turns fallen logs and branches into soil. The blue bruising is thought to deter insects and other animals. It is a visual warning. It says 'I am not food'. The message is clear. The recipient understands. The survival strategy is effective. The colour is the shield.
The Blueing Bracket is not edible. It is tough and bitter. It has no culinary value. But its beauty is in its trick. Its ability to surprise is the point. It makes a person say 'wow' when touching it. The reaction is human. The fungus is indifferent. It does not perform for an audience. It performs for survival.
To find a Blueing Bracket is to find a fungus that interacts. It responds to touch. The log is dead. The bracket grows, white and soft. A finger touches. The flesh turns blue. It is electric and startling. The fungus does not know it is magic. It just wants to not be eaten. The intent is simple. The result is complex. The observer is delighted. The fungus is protected.
The blue fades. The fungus continues to rot the wood. That is what bracket fungi do. The work is slow. The decomposition is steady. The soil gains nutrients. The forest recycles itself. The Blueing Bracket plays its part. It breaks down the lignin. It breaks down the cellulose. It returns the carbon. The blue stain remains as a memory. The touch leaves a mark. The fungus carries on. It does not seek praise. It seeks completion. The log disappears. The fungus persists. And that seems to be enough.