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Sulphur Tuft (Hypholoma fasciculare)

Sulphur tuft (Hypholoma fasciculare) is a very common and widespread mushroom. It often forms vast clusters on stumps and fallen trees. "Sulphur" is a great description for the yellowish color of the fruiting bodies under normal light. However, when illuminated with UV light (black light), these mushrooms glow bright green. This fluorescence should not be confused with true bioluminescence where the organism will emit its own light (think fireflies and Omphalotus mushrooms).

Sulphur tuft (Hypholoma fasciculare).  Kruse Rhododendron SNR, Sonoma County, California, USA. Stock Photo ID=FUN0406
Sulphur tuft (Hypholoma fasciculare), cluster of mushrooms fluorescing brightly when illuminated with 365nm UV light (black light). Kruse Rhododendron SNR, Sonoma County, California, USA.
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Sulphur tuft (Hypholoma fasciculare).  Kruse Rhododendron SNR, Sonoma County, California, USA. Stock Photo ID=FUN0406
Sulphur tuft (Hypholoma fasciculare), animated gif showing how the mushrooms look under UV light compared to white light. Kruse Rhododendron SNR, Sonoma County, California, USA.
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Next: Smoked oysterling (Resupinatus applicatus)



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All images copyright Timothy Boomer. All rights reserved worldwide.