Omphalina

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Omphalina (family Tricholomataceae) A genus of fungi in which the fruit bodies are small; the cap is thin and convex (often with a central depression), the gills are decurrent, and the stipe is thin and central. The spores are smooth and colourless, and do not stain dark violet when treated with iodine. They are found chiefly on peaty ground in heathland.