Robert Thompson / Black bulgar fungus (Bulgaria inquinans) growing amongst mosses, Tollymore Forest, County Down, Northern Ireland, UK. September.

Nick Upton / Black bulgar fungus (Bulgaria inquinans) growing from a rotting log in woodland, Gloucestershire, UK, October.

Nick Upton / Black bulgar fungus (Bulgaria inquinans) growing from a rotting log in woodland, Gloucestershire, UK, October.

Andy Sands / Black bulgar or Bachelor's Buttons (Bulgaria inquinans) a jelly fungus that grows on fallen Oak, Ash and other hardwood trees, Hertfordshire, Englkand, UK, September. Focus Stacked

Andy Sands / Jellybaby fungus (Leotia lubrica) inedible fungi that resemble jellybabies, Buckinghamshire, England, UK, September. Focus Stacked Image

Andy Sands / Black bulgar or Bachelor's Buttons (Bulgaria inquinans) a jelly fungus that grows on fallen Oak, Ash and other hardwood trees, Hertfordshire, Englkand, UK, September. Focus Stacked

Andy Sands / Black bulgar or Bachelor's Buttons (Bulgaria inquinans) a jelly fungus that grows on fallen Oak, Ash and other hardwood trees, Hertfordshire, Englkand, UK, September. Focus Stacked

Nick Upton / Black bulgar fungus (Bulgaria inquinans) growing on rotting oak log, GWT Lower Woods reserve, Gloucestershire, UK, October.

Nick Upton / Black bulgar fungus (Bulgaria inquinans) growing on rotting oak log, GWT Lower Woods reserve, Gloucestershire, UK, October.

Pete Oxford / Cup fungus {Leotiales} Amazon rainforest, Ecuador, South America

John Waters / Cup fungi on rotting wood, Sumatra Indonesia

Philippe Clement / Black bulgar (Bulgaria inquinans) fungi growing on bark of felled tree showing different growth stages in autumn forest, Flanders, Belgium. October.

Robert Thompson / Jelly baby fungus (Leotia lubrica) Gosford Forest Park, County Armagh, Northern Ireland.

Will Watson / Black bulgar (Bulgaria inquinans) on Sessile oak (Quercus petrea), Warren Wood, Herefordshire, England, November. Focus stacked.

Andy Sands / Jellybaby fungus (Leotia lubrica) Group of three growing in Beech tree leaf litter, Buckinghamshire, England, UK, November. Focus stacked.

Guy Edwardes / Black bulgar fungus (Bulgaria inquinans). Dorset, England, UK. October.

Guy Edwardes / Black bulgar fungus (Bulgaria inquinans). Dorset, England, UK. October.

Andy Sands / Jellybaby fungus (Leotia lubrica). Buckinghamshire, England, UK. October. Focus stacked image.

Linda Pitkin / Black bulgar fungus (Bulgaria inquinans). Selsdon Wood Nature Reserve, Surrey, England, UK. October.

Linda Pitkin / Bachelor's buttons fungus (Bulgaria inquinans), Abinger Roughs NT, Surrey, England, October

Linda Pitkin / Jelly babies fungus (Leotia lubrica), Penn Wood, Buckinghamshire, England, November.