TreeBASE Search-Analyses for study 21518

@ARTICLE{TreeBASE2Ref27593, author = {Nicolas Niveiro and Andrea Michlig and Natalia Andrea Ramirez and Carlos A. Salvador Montoya and Maria Laura Perez and Edgardo Omar Alberto and Vladimir Antonin}, title = {Two new species of Marasmius from the Parana river floodplain in Argentina}, year = {2017}, keywords = {diversity, Marasmiaceae, taxonomy}, doi = {}, url = {http://}, pmid = {}, journal = {IMA Fungus}, volume = {}, number = {}, pages = {}, abstract = {Marasmius is characterized by their generally small to medium-size basidiomata, with membranaceous consistency, and revivescent when is rehydrated, characters which allow them to tolerate conditions of seasonal drought or high temperatures, making them an abundant and diverse group in tropical and subtropical regions in the world. Diverse authors studies this genera, however some new species are proposed. The aim of this article is to describe two new species, M. chrysoblepharioides and M. neotrichotus from the riparian forest of the Paran? river, in Northeastern Argentina. Marasmius chrysoblepharioides is characterized by its yellowish orange pileus, with a sulcate-striate margin, its entirely pilose orange brown stipe, its baciliform to fusiform large spores, 15?19 ? 3.5?4.5 ?m in size, and its setiform caulocystidia, 28.5?235 ? 6?13.8 ?m in size, with a tapering and thick-walled apex. Macroscopically, the most similar species is M. chrysoblepharis, however, it differs in the smaller spores (9.3?13 ? 3.3?3.7 ?m) and smaller caulocystidia that not exceed 120 ?m. Other related species is M. nummularioides, but it is distinguished by its non-striate margin and its reddish brown pileus surface, darker than in M. chrysoblepharioides, and by having the Siccus-type caulocystidia together with setoid caulocystidia in the stipitipellis. The other new species proposed, Marasmius neotrichotus, is characterized by its large, setoid cystidia on the pileus (pileocystidia 80?370 ? 5?9 ?m) and stipe surface (caulocystidia 40?480 ? 5?15 ?m), the absence of broom cells in the stipitipellis, the cylindrical to baciliform spores, 9?15 ? 3.5?5 ?m in size, the brownish orange pileus surface with the non-striated margin and close white lamellae. These characters make it very similar to M. trichotus, described form southeastern Asia and M. ciliatus, described for the Lesser Antilles; all of them form a species complex that shares the small basidiomata, covered by extraordinarily long setoid cystidia. However, they have small morphological differences (caulocystidia characters and spore size), in addition to the geographic distribution and phylogenetic relationship (between M. trichotus and M. neotrichotus), which allows us to consider them as independent species. The phylogenetic analyses based on molecular data from ITS sequences from the holotype of the new species here proposed, M. chrysoblepharioides and M. neotrichotus, confirm that they are different from other Marasmius species for which ITS data are available. The two new species, are related to other species of the ser. Spinulosi.} }