Well named as this dull grey-brown waxcap is viscid on both the cap and stipe. The gills are a greyish-white. Widespread in unimproved grassland but not common.

References: 
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