Two new species of Deconica (Agaricales, Basidiomycota) from Australia and Mexico

Two new species of Deconica with chrysocystidia are described from Australia and Mexico. Deconica milvispora, from a warm temperate rainforest in Queensland, Australia, is characterized by rhomboid basidiospores with nodulose angles not observed in any member of the genus until now. Deconica esperancensis, from a cloud forest in the south of Mexico, is characterized by subrhomboid basidiospores and short cheilocystidia. Full descriptions, illustrations, and comparisons with similar species are provided for both species. Bayesian and maximum likelihood analyses were performed employing sequences of nuc ITS rDNA, including seven new sequences from historical type collections of D. aequatoriae, D. alpestris, D. semiinconspicua, Deconica submaritima, D. thailandensis, D. umbrina, and Psilocybe subrunneocystidiata (= Deconica neorhombispora). As expected, the results showed the phylogenetic position of the new species described here within Deconica sect. Chrysocystidiatae, a supported monophyletic group. This section comprises many species, the majority with chrysocystidia, ten of them newly discovered but unnamed taxa. At this time, two taxa are described. Additionally, discussion of the traits found in the four major clades of Deconica is presented.