Lecanora sorediomarginata Rodrigues, Terrón & Elix sp. nov., described as new to science from Portugal, is characterized morphologically by a crustose whitish-grey to greenish thallus developing soralia from small, marginal warts and chemically by the presence of 3, [minor], and usnic acid [trace]. It is chemically similar to L. lividocinerea, to which it shows phylogenetic affinities based on ITS rDNA sequence analysis, and to L. sulphurella. Lecanora sorediomarginata is epiphytic on Pinus pinaster and P. pinea, in pine forests on sand dunes along the Portuguese coast.

Resumen. Se describe Trappea darkeri para México, esta especie presenta una distribución en el hemisferio norte en altitudes elevadas; los ejemplares recolectados y estudiados provienen de los estados de Coahuila, Tlaxcala y Michoacán, el presente registro se convierte en la distribución más austral conocida para la especie.Palabras clave: trufas, pseudotrufas, hongos hipogeos.

-Chrysothrix flavovirens, Lepraria elobata, and Ochrolechia arborea are reported as new to Portugal, based on surveys carried out in pine forests along the Portuguese coast. Data on the distribution, secondary products and ecology of the species are presented.