the deep purple webcap toxic to NZ foragers
- Size
- Cap: 5–10 cm, Stem: 6–12 cm
- Lifespan
- 1 years
- Diet
- Mycorrhizal. Forms symbiotic relationship with roots of native beech and podocarp trees. Exchanges nutrients and water with tree, receiving carbohydrates in return. Cannot survive without host tree.
- Habitat
- Grows on ground in native beech and podocarp forests. Forms large, stately mushrooms with deep violet to purple cap and stem. Cap convex when young, flattening with age, covered in fine woolly scales.
- Range
- New Zealand. Found throughout South Island and southern North Island in native beech and podocarp forests. Most common in South Island beech forests and North Island central plateau. Genetically distinct form.
- Endemism
- Native
- Main Threats
- Habitat loss from forest clearance is primary threat. Also threatened by beech forest dieback due to climate change. Decline of mycorrhizal partners affects survival. Classified as At Risk - Declining.
- Population
- A spectacular deep violet mushroom found in native beech and podocarp forests. Cap and stem are rich, dark violet, fading to brownish-violet with age. Gills violet when young, turning rusty brown. Rare and declining.
- Conservation Status
- At Risk - Declining
The Violet Webcap is the purple jewel of the beech forest. It is defined by a colour that seems too rich, too intense to be real. The cap measures five to ten centimetres across. It is deep violet to purple. Fine, woolly scales cover the surface. The gills are violet when young. They turn rusty brown with age as the spores mature. The stem is six to twelve centimetres tall. It is also violet. A web-like partial veil leaves a ring zone near the top. The structure is distinct. The colour is unforgettable.
This is a mushroom that stops you in your tracks. The colour is so deep, so saturated, that it seems to glow against the brown leaf litter and green moss. It demands to be photographed. It is a mushroom that you remember for years after you have seen it. The visual impact is immediate. The memory is lasting. The encounter is rare.
Biologically, the Violet Webcap is a mycorrhizal fungus. It forms a partnership with the roots of beech and podocarp trees. It cannot survive without its host. It is a slow-growing, long-lived species. It takes years to establish and produce fruiting bodies. The dependency is total. The pace is glacial. The result is spectacular.
The Violet Webcap is declining in New Zealand. Its habitat, old-growth beech and podocarp forests, has been reduced by logging and land clearance. It is sensitive to disturbance. It requires undisturbed soil and mature trees. It is now classified as At Risk - Declining. The status is precarious. The trend is downward. The cause is human activity.
The Violet Webcap is not edible. Some Cortinarius species are poisonous. This one is too rare to risk. But its beauty is its purpose. It exists to be admired. It is a reminder that our native forests are home to rare and beautiful things. We are still learning to appreciate them. The value is aesthetic. The risk is toxic. The rarity is significant.
To find a Violet Webcap is to find a treasure. It is not common. It is becoming rarer. It is a reminder that we need to protect our native forests. Not just for the birds and the trees. But for the fungi too. For the hidden, beautiful, declining things that most people never see. The forest holds secrets. The violet cap reveals one. The protection is necessary. The appreciation is growing. The decline continues. It carries on. It does not seek attention. It seeks survival. And that seems to be enough.