The article explores the black market for edible mushrooms in Morocco, emphasizing the informal sector of macromycete sales. It aims to uncover the extent of this parallel market and analyze the factors contributing to its development. The study combines a literature review and a detailed analysis of mushroom samples to assess the impact on the environment, biodiversity, and public health. Morocco’s biodiversity includes various macromycetes with significant gastronomic, medicinal, and ecological value. The market for edible mushrooms is divided into three categories based on gastronomic quality: luxury mushrooms like truffles, moderately expensive mushrooms such as certain truffles and Caesar’s mushrooms, and more affordable mushrooms like morels, porcini, and chanterelles. Despite measures to regulate the sector since 1989, the black market persists due to economic constraints, bureaucratic hurdles, and high tax rates. Informal activity is often a result of unemployment and poverty, leading individuals to bypass official channels to avoid taxes and regulatory fees. The lack of awareness about the dangers of consuming toxic mushrooms further exacerbates the issue. The study’s methodology includes field excursions to various Moroccan regions during the fungal growth season to collect and analyze mushroom samples. This involves documenting ecological and macroscopic characteristics and laboratory analysis using microscopes, chemical reagents, and artificial intelligence applications. Results highlight the significant biodiversity of Moroccan fungi, with regions like the Mamora forest and the Rif being primary sources of wild mushrooms for commercial gathering. Major species include truffles, porcini, chanterelles, button mushrooms, and oyster mushrooms, with others like russulas and morels being less known. The informal market poses risks to the environment, biodiversity, and public health. Unregulated harvesting leads to overexploitation, while the sale of toxic mushrooms, such as Amanita phalloides, poses serious health risks. Public awareness and education about mushroom safety and regulation are crucial. Recommendations for sustainable management include regulating mushroom harvesting and commercialization, promoting public awareness, and developing cultivation methods to reduce dependence on the informal market. Preserving forest biodiversity and encouraging artificial cultivation are also suggested to ensure a more sustainable use of fungal resources. The article concludes by emphasizing the need for further research to provide accurate data on the extent and impact of the clandestine market. It calls for a more comprehensive approach, including comparative studies with other regions and interdisciplinary analysis, to develop effective policies for managing Morocco’s fungal resources.