Beginner Gardening: fern root spheres?, 1 by _Mai_

_Mai_ wrote:
I looked online for a bit but for the life of me do not know what these are...

they are big spheres that are attached to the roots of my ferns. there was a mix of plants from where i dug them out for a friend of mine, but i believe they belong to the ferns... not sure tho

anyway, take a look. maybe someone much more knowledgeable than me can tell me just what the heck they are!

thanks to everyone in advance