Antecedentes y Objetivos: El género Scutellinia es cosmopolita. Siete especies han sido reportadas en México. Se presenta una revisión taxonómica parcial del género para el país.Métodos: Se estudiaron siete especies, siguiendo las técnicas tradicionales en micología.Resultados clave: Tres especies se citan por primera vez en el país: Scutellinia balansae, S. colensoi y S. pennsylvanica. Las principales características usadas para la identificación de las especies en este estudio son los pelos marginales y la ornamentación de las ascosporas. Se realizan las descripciones taxonómicas de los tres nuevos registros y de las especies ya reportadas para el país.Conclusiones: El conocimiento taxonómico del género Scutellinia en México sigue siendo escaso, por lo que es necesaria la elaboración de más estudios enfocados a la sistemática fúngica en el país.
Tremelloscypha gelatinosa (Murrill) Oberw. et K. Wells. Todas son registros nuevos para la reserva. Auricularia cornea y T. gelatinosa son nuevos registros para el estado de Campeche.
An ultrastructural study was made of basidiospores from nine species of Dacrymycetales: Calocera macrospora, C. viscosa, Dacrymyces dictyosporus, D. chrysospermus, Dacryopinax elegans, Da. spathularia, Da. lowyi, Guepiniopsis
alpina, and G. buccina. Spore walls and septa analyzed with transmission electron microscopy revealed the absence or presence of discrete lateral wall layers as well as septal pores that appear diagnostic at the species level.
A taxonomical revision of the Dacryopinax species in Mexico is presented in detail. Historically, only four species were known in the country: Dacryopinax elegans, D. lowyi, D. spathularia, and D. yungensis. Dacryopinax martinii is reported for the first time from Mexico. Taxonomical descriptions and remarks for all the species, based on macro- and micro-morphology, as well as geographical distribution are included, except for D. yungensis, as its record corresponded to a misidentification of D. spathularia. We propose a new phylogeny including the taxonomic position and relationships of all species, based on ITS and LSU sequence data. Finally, a dichotomous key to identify the four species in Mexico is provided.
Scutellinia ulloae sp. nov., collected on soil from Temascaltepec in central Mexico near Nevado de Toluca (aka Xinantécatl) volcano, is described and illustrated. A unique tuberculate ascospore ornamentation distinguishes the new species from the approximately 60 other
known Scutellinia taxa.
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