Revista Mexicana de Biodiversidad Revista Mexicana de Biodiversidad 91 (2020): e913246 Taxonomy and systematics Diversity, morphological variability, and distribution of tulostomataceous fungi (Agaricomycetes) in Sonora, Mexico Diversidad, variabilidad morfológica y distribución de hongos tulostomatáceos (Agaricomycetes) en Sonora, México Eduardo Hernández-Navarro a, Aldo Gutiérrez a, Martha L. Coronado b, Osiris Álvarez-Bajo c, Silvia Andrade d, Felipe Barredo-Pool d, Martín Esqueda a, * a Centro de Investigación en Alimentación y Desarrollo, A.C., Carretera Gustavo Enrique Astiazarán Rosas 46, La Victoria, 83304 Hermosillo, Sonora, Mexico b Universidad Estatal de Sonora, Ave. Ley Federal del Trabajo s/n, 83100 Hermosillo, Sonora, Mexico c Cátedra Conacyt-Universidad de Sonora, Blvd. Luis Encinas y Rosales s/n, 83000 Hermosillo, Sonora, Mexico d Centro de Investigación Científica de Yucatán, A.C., Calle 43 Núm. 130, 97200 Mérida, Yucatán, Mexico *Corresponding author:
[email protected] (M. Esqueda) Received: 15 October 2019; accepted: 28 May 2020 Abstract Recent mycological studies in Sonora, Mexico have mainly focused on tulostomataceous fungi, a group of gasteroid Agaricomycetes with a spore-sac containing pulverulent gleba and a well-defined, hollow stipe. The aim of the present study was to analyze the diversity, morphological variability, and distribution of tulostomateceous fungi, through examining the specimens deposited in the Sonora State University herbarium over 29 years of sampling. Based on 1,266 basidiomes in 621 collections from 75 locations, 23 municipalities, and 16 vegetation types, a total of 7 genera and 37 species were identified. All genera are monospecific in Sonora except Tulostoma, with 31 defined species. Several collections remain undetermined since their morphological traits are intermediate or do not match described species.