Guy Edwardes / Apricot jelly fungus (Guepinia helvelloides), Lago di Fusine, Italy. October.

Nick Upton / Jelly ear / Jew's ear fungus (Auricularia auricula-judae) clump growing from rotting log by a woodland path near a house, Wiltshire, UK, November.

Nick Upton / Jelly ear / Jew's ear fungus (Auricularia auricula-judae) clump growing from rotting log in deciduous woodland, Wiltshire, UK, November.

Guy Edwardes / Tripe fungus (Auricularia mesenterica) on decaying log. Dorset, England, UK. November.

Guy Edwardes / Tripe fungus (Auricularia mesenterica), underside. Dorset, England, UK. November.

Guy Edwardes / Tripe fungus (Auricularia mesenterica), underside. Dorset, England, UK. November.

Guy Edwardes / Tripe fungus (Auricularia mesenterica), underside. Dorset, England, UK. November.

Guy Edwardes / Tripe fungus (Auricularia mesenterica), underside. Dorset, England, UK. November.

Jussi Murtosaari / Hair ice crust fungus (Exidiopsis effusa). Jyvaskyla, Central Finland. November.

Jussi Murtosaari / Hair ice crust fungus (Exidiopsis effusa) in woodland. Jyvaskyla, Central Finland. November.

Linda Pitkin / Yellow brain fungus (Witches Butter) (Tremella mesenterica) - a jelly fungus, Holmwood Common, Surrey, England, November.