what does it look like?
The individual caps are violet-black. The stem is dark purplish-black with a smooth and dry surface; the stems are often fused at the base. It is typically wide. The flesh is dark violet, soft .The spore deposit is white.
Polyozellus
 The stem is dark purplish-black with a smooth (glabrous) and dry surface; the stems are often fused at the base. It is typically wide and up to long. The flesh is dark violet, soft but breaking easily. The spore deposit is white.
what is polyozellus? A type of fungus.
wiki:24642014
Polyozellus [SEP] Description
Fruit bodies may be up to high (including the stem) and wide. Occasionally, much larger clusters of fused mushrooms are found, up to a meter in diameter. The stem is dark purplish-black with a smooth (glabrous) and dry surface; the stems are often fused at the base. It is typically wide and up to long. The flesh is dark violet, soft but breaking easily. The spore deposit is white.