- Size
- Cap: 15-35 mm diam.
- Lifespan
- Unknown
- Diet
- Mycorrhizal, forming symbiotic relationships with native trees.
- Habitat
- Under broadleaf and podocarp trees in damp, shaded forest.
- Range
- Found in native forests throughout New Zealand, particularly in damp, shaded areas.
- Endemism
- Not endemic
- Main Threats
- Habitat disturbance from logging, fire, or heavy grazing affecting soil moisture.
- Population
- Common in native forests throughout New Zealand, particularly in autumn.
- Conservation Status
- Not Threatened
It does not grow in the open. You will not find the Star Fibrecap in the park, the garden, or the roadside verge. It demands the deep, quiet shade of the native forest. It requires the specific chemistry of leaf litter and the cool, damp air of the understory. It is a creature of isolation, thriving where human footfalls are rare and the canopy is thick. This scarcity is not a sign of fragility. It is a preference for stability.
The cap is small, convex, and coloured a pale straw or ochre. It is dry to the touch and covered in fine, silky fibres that radiate from the centre. As the mushroom ages, these fibres split, revealing the pale flesh beneath. The splitting gives the species its name, though the "star" is subtle, visible only to those who look closely. It is not a showy fungus. It blends into the leaf litter, avoiding attention.
The gills are white and crowded. They are attached to the stem and become greyish-brown as the spores mature. The stem is white, slender, and solid. It does not have a ring. It does not have a web. It stands alone, supporting the small cap. The flesh is white and thin. It smells faintly of spermatic or earthy musk, a scent that is characteristic of the genus Inocybe. This odour is not pleasant, but it is distinctive. It serves as a warning to those who know how to read it.
This fungus is mycorrhizal. It forms symbiotic relationships with a variety of native trees, including beech, podocarps, and broadleaf species. The hyphae extend into the soil, gathering water and nutrients that the tree cannot reach. In exchange, the tree provides sugars produced by photosynthesis. It is a quiet trade, essential for the health of the forest. Without these fungi, the trees would struggle. The soil would be less fertile. The forest would be poorer.
Star Fibrecaps are found throughout New Zealand, from the northern forests to the southern beech lands. They fruit in autumn, often singly or in small clusters. They are toxic. Like all Inocybe species, they contain muscarine, a toxin that affects the nervous system. Consuming them can cause severe sweating, salivation, and gastrointestinal distress. They are best left alone. Their beauty is in their delicate structure, not their flavour.
Threats are minimal. The species is widespread and common. However, it is sensitive to changes in moisture and soil structure. Logging, fire, or heavy grazing can disrupt the delicate mycelial networks beneath the forest floor. Recovery is slow. The fungi wait for the conditions to return. They do not rush. It carries on.