Three new marasmioid-gymnopoid rhizomorph-forming species from Mexican mountain cloud forest relicts
- PDF / 1,465,682 Bytes
- 13 Pages / 595.276 x 790.866 pts Page_size
- 85 Downloads / 187 Views
ORIGINAL ARTICLE
Three new marasmioid-gymnopoid rhizomorph-forming species from Mexican mountain cloud forest relicts Enrique César 1 & Leticia Montoya 1 & Víctor M. Bandala 1
&
Antero Ramos 1
Received: 5 May 2020 / Revised: 22 July 2020 / Accepted: 23 July 2020 # German Mycological Society and Springer-Verlag GmbH Germany, part of Springer Nature 2020
Abstract Three new species in the genera Marasmiellus, Pusillomyces, and Gymnopus are described based on specimens found growing in the leaf litter of a mountain cloud forest relict from eastern Mexico. Distinctive macro- and micromorphological characters in combination with a phylogenetic analysis based on ITS sequences support their taxonomic identity and position in each of the above mentioned genera of the Omphalotaceae. Species here described form rhizomorphs. Morphological descriptions, including illustrations, photographs, and taxonomic discussions are provided. Keywords Agaricales . Marasmioid fungi . Gymnopoid fungi . Rhizomorphs . Neotropical fungi . Omphalotaceae
Introduction After recent description of the rhizomorph-forming Gymnopus nidus-avis [Pseudomarasmius nidus-avis (César, Bandala & Montoya) Petersen and Hughes 2020], new collections of marasmioid-gymnopoid fungi that produce flat rhizomorphs were found growing on leaf litter, in the same study site, a mountain cloud forest relict, a protected area by the Instituto de Ecología A.C. located near to Xalapa, Veracruz (East Coast of Mexico). The macro- and micromorphological characters exhibited by the studied fresh specimens, along with the results after a molecular phylogeny obtained, inform that the three new species here described have a taxonomic position in the Omphalotaceae Bresinsky, a family that includes other rhizomorph-forming species. The Omphalotaceae is undergoing a constant rearrangement by both the continuous application of molecular tools and by the additional information that is generated which includes data from formerly undocumented species or even new proposed genera (Moncalvo et al. 2002; Wilson and Desjardin
Section Editor: Zhu-Liang Yang * Víctor M. Bandala [email protected] 1
Red Biodiversidad y Sistemática, Instituto de Ecología A.C., P.O. Box 63, 91000 Xalapa, Veracruz, Mexico
2005; Mata et al. 2007; Petersen and Hughes 2016, 2020; Oliveira et al. 2019). Accepting in Omphalotaceae an arrangement with a more strict concept of Gymnopus (Pers.) Roussel, as well as Marasmiellus Murrill, Mycetinis Earle, and Lentinula Earle, among others (Wilson and Desjardin 2005), and in correspondence with a recent phylogenetic conclusion on Omphalotaceae (Oliveira et al. 2019), the three species here described are recognized in Marasmiellus, Pusillomyces J.S. Oliveira, and Gymnopus, supported also with the morpho-anatomic characters that define such groups. Several rhizomorph-forming species are known among the agarics, and their functional role in ecosystems is recognized by the harmful effect caused in other organisms (Hartig 1873; Seaver 1944; Morrison 2004; Dassanayake et al
Data Loading...
