Size
Cap: 10-30 mm diam.
Lifespan
Unknown
Diet
Saprotrophic, decomposing dead organic matter in soil.
Habitat
In short, nutrient-poor grassland and pasture.
Range
Found in grasslands and pastures throughout New Zealand, particularly in nutrient-poor soils.
Endemism
Not endemic
Main Threats
Habitat loss from intensive farming, fertiliser use, and ploughing.
Population
Common in unimproved pastures and grasslands throughout New Zealand.
Conservation Status
Not Threatened
You might mistake it for moss. The Olive Waxcap does not shout with the crimson of its cousins. It is muted, coloured a dull olive-green or brownish-yellow. It blends into the damp grass, visible only to those who look closely. The cap is convex, smooth, and waxy to the touch. It is often sticky in wet weather, gleaming under the grey sky. As it ages, the margins may fade to a paler hue, but the centre remains distinct. It is a modest mushroom, easily overlooked among the blades. Do not let its modesty fool you. It is essential. The habitat is specific. The Olive Waxcap thrives in short, nutrient-poor grassland, particularly where the soil has not been enriched by fertilisers. It is found throughout New Zealand, from the northern hills to the southern high country. It fruits in autumn and winter, often after heavy rain. It is not picky about its location, appearing in parks, lawns, and forest margins. Where it grows, the balance between grass and fungus is maintained. It is an indicator species, a biological signal that the land is not overworked. This fungus is saprotrophic. It feeds on dead organic matter in the soil, breaking down grass roots and leaf litter. In doing so, it releases nutrients back into the ecosystem. It is a recycler, working in the open spaces of the landscape. Without it, the soil would be less fertile. The grasses would struggle. The landscape would be poorer. Its presence signals a healthy, unfertilised environment. It thrives where the land has not been overworked by intensive farming. The gills are yellow or cream, attached to the stem and spaced widely apart. The stem is hollow, fragile, and coloured like the cap, though often paler at the base. It does not have a ring. It does not have a web. It stands alone, supporting the small cap. The flesh is thin and brittle. It smells faintly of earth, nothing more. Unlike the Garlic Parachute, it has no distinct scent. Its defence is obscurity, not chemistry. Threats are significant. The species is sensitive to fertiliser use and intensive farming. Nitrogen-rich soils favour aggressive grasses that outcompete the fungi. Ploughing destroys the mycelial network beneath the soil. Recovery is slow. The fungi wait for the conditions to return. They do not rush. It carries on.