Chionochloa macra grassland
Found among leaf litter, in mixed planting of pine, natives, and firs, closest to the trunk of a mature cordyline australis.
Single, very textured / ruff cap surface. Dark colored and hard to see against the duff. Gills purple-grey tones and stem substantial and dark purple tones with white flecks.
Environment. On the yellow/purple dashed trail. Where it winds up through the conifer plantation. I think these are macrocarpa, but not 100% confident in my tree ID. Also very close to a ridge line which was planted out in deciduous oak. No leaf litter visible but earth balls were in the vicinity.
Dark spiky fibrils on dark brown/black cap. Gills and stipe tinged violet. Growing in soil in mixed podocarp including some silver beech.
Found growing from a piece of cake that was forgotten in a fridge.
Somehow got 50k likes on Twitter / X with this image: https://twitter.com/Invertebratist/status/1718476500905930952