Phylum: Basidiomycota Family: Hygrophoraceae
Gliophorus psittacinus (Schaeffer) Herink
The chameleon of the waxcaps appearing in many different colours: oranges, pinks and greens being the most common. It's very common in unimproved grassland, and incredibly slimy.
Boertmann, D. (2010 revised second edition) The Genus Hygrocybe
Harries, D. (2017) A Guide to Waxcaps in West Wales
Bessette, A.E. et al. (2012) Waxcap Mushrooms of Eastern North America
Wood, E. & Dunkelman, J. (2017) Grassland Fungi: a field guide