The Hygrophoraceae family includes many Waxy Caps that are quite colorful. It is not known if they are mycorrhizal, saprotrophic or both. None are known to be poisonous. However, they are not eaten very much due to viscid slime coating. The family has recently been updated by Lodge et al and now includes 18 genera, 6 of which are represented below. 

Molecular phylogeny, morphology, pigment chemistry and ecology in Hygrophoraceae (Agaricales). Fungal Divers 64:1–99. 

To see enlarged versions of each photo represented in this family, click on the first photo and then click on the textual links above each photo to get to the next one.