This is Haymakers Panaeolus, aka the Mottled Gill, which grows prolifically in lawns. This species is not psilocybin-active but close taxonomically to one which is: Panaeolus cinctulus (=Panaeolus subbalteatus), but P. foenisecii has dark brown spores, and this other active species has black spores. I often see Panaeolus foenisecii in the same habitat as Psilocybe semilanceata. But P. foenisecii and P. semilanceata typically do not grow on dung. P. semilanceata sometimes does on cow dung. Panaeo