Lemon Disco

Bisporella citrina

''Bisporella citrina'', commonly known as yellow fairy cups or lemon discos, is a species of fungus in the family Helotiaceae. The fungus produces tiny yellow cups up to 3 mm in diameter, often without stalks, that fruit in groups or dense clusters on decaying deciduous wood that has lost its bark.
Yellow Fairy Cups - Bisporella citrina They were about 1-2 mm in diameter

Habitat: Growing on rotting wood in a deciduous forest Bisporella,Bisporella citrina,Fall,Geotagged,Lemon Disco,United States,cup fungus,fungus,yellow,yellow fairy cups


Fruit bodies begin as spherical, closed globules, before expanding. The smooth, bright yellow fruit bodies are small—typically less than 3 mm in diameter and up to 1 mm high—and shallowly cup- or disc-shaped.

The inner surface is smooth, and bright yellow, while the outer surface is a paler yellow. In mass, the spore color is white. The stalk is broad, pale yellow in color, and short to nearly absent; when present it is rarely more than 1 mm.

The fruit bodies may be so numerous that their shapes are distorted by overcrowding. Fruit bodies that have dried are wrinkled and have a dull orangish-brown color. The fruit bodies have no distinctive taste nor odor, and are not edible.

The smooth spores are roughly elliptical, measuring 8–14 by 3–5 μm; in maturity they have one cross-wall, and oil drops at either end. The asci measure 100–135 by 7–10 μm. The paraphyses are shaped liked narrow cylinders with diameters up to 1.5 μm, and have tips that are rounded or somewhat club-shaped.

β-Carotene is the predominant pigment responsible for the yellow color of the fruit body.
Lemon Disco Fungus On a decaying log the colourful Lemon Disco Fungus (Bisporella citrina) on the Centennial Ridges Trail, Algonquin Provincial Park, Ontario, Canada. Algonquin Provincial Park,Bisporella citrina,Canada,Centennial Ridges Trail,Fall,Geotagged,Lemon Disco,Lemon Disco Fungus,Ontario,mushroom


The widespread fungus is known from North Africa, Asia, Europe, North America, Central and South America, Australia, and New Zealand. It is one of the most common of the small discomycetes.
Lemon Discos - Bisporella citrina Tiny, yellow fruiting bodies that were growing all over twigs. They were about 1-2 mm in diameter.

Habitat: Deciduous forest
https://www.jungledragon.com/image/68431/lemon_discos_-_bisporella_citrina.html Bisporella,Bisporella citrina,Fall,Geotagged,Lemmon Disco,United States,fungus,yellow


''Bisporella citrina'' is saprobic, and so obtains nutrients by breaking down complex organic molecules into simpler ones.

Fruit bodies are typically encountered growing in dense clusters on the surface of rotten wood, particularly beech. They have also been found growing on the fruit bodies of the polypore fungus ''Daedaleopsis confragosa''.


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SpeciesB. citrina