Suppliers who use mycelium will grow these roots along with a grain substrate, generally rice or oats. Once mycelium roots grow, the roots and substrate turn into intertwined and they are extremely hard to different. The 2nd variety is mycelium, and it is best to typically keep away from it. https://trevorexolz.blogzet.com/details-fiction-and-psilocybin-nz-41014145