If in my first observation of this species, Observation 264099: Coprinopsis tuberosa, the sclerotia formation at the base of the stem was inconspicuous, this time was much bigger. I saw a group of three mushrooms standing together without apparent connection; removing the substracta (dung, possibly of a dog) from their bases I could see black formations - sclerotia - that after cutted revealed a pure white inside. Unfortunately all these happened at home with a poor lighting conditions, since in the field I could not take the desirable photos due to a lack of batteries, and the corresponding photos are miserable (Photo 1, is from that time).; The day after I took some photos of the sclerotia and of the specimens (Photo set 2). In spite of having conserved the mushrooms in the fridge, there was no developement of the specimens and the microscopy failed; only the veil could be well observed and no mature spores. However, I think that it is enough for the identification, since the sclerotia is fairly distinctive.