A new species and new records of Leptogium (Ach.) Gray (Collemataceae, Peltigerales) from Rio Grande do Sul State with an identification key for the genus

Abstract

Specimens of leptogium collected in ten localities from the State of Rio Grande do Sul were studied. Sixteen species were found of 28 records mentioned to the state, which represents around 57% of the Leptogium diversity known for Rio Grande do Sul. leptogium exaratum is proposed as a new species. Leptogium atlanticum, L. milligranum and L. vesiculosum are reported for the first time to the state. The lectotype of l. javanicum is reported here and detailed descriptions are provided to the examined specimens. An identification key is showed with all the 28 mentioned species of Leptogium. It is the first published taxonomic key for Leptogium from Rio Grande do Sul, the State with the highest diversity of this genus in Brazil.

Diversity of Leptogium (Collemataceae, Ascomycota) in East African Montane Ecosystems

“…The species has also been reported from Brazil [72], but a comparison with the published description suggests that the Brazilian taxon is not conspecific with our material from Kenya. This supports the interpretation [72] that Leptogium javanicum probably represents a species complex.…”

“…The morphotypes represent at least eight putative species, the morphotype adpressum being clearly more species rich and morphologically diverse ( Figure S2). Recent descriptions of Leptogium coralloideum from Brazil [72,74], the type location, suggest that Leptogium OTU E3 might not be Leptogium coralloideum, but one of the other taxa mentioned above might be. Previous reports form East Africa have mentioned Leptogium coralloideum to be common from sea level to high elevations (>3000 m) and L. adpressum to occur at elevations between 1000 and 3400 m [32,33].…”

Lichen Community Assemblages and Functional Traits as Indicators of Vegetation Types in Central Mexico, Based on Herbarium Specimens

“…We used specialized taxonomic literature to identify the specimens (Nash III et al 2002, 2004, 2007; Otálora et al 2014; Mongkolsuk et al 2015; Brodo et al 2016; Kitaura et al 2019). Lichen morphological structures were recognized by means of light microscopy (Leica EZ400, Leica DM 100) and lichen substances were detected using spot tests and UV light exposition (Brodo et al 2001).…”

Múltiples registros nuevos de hongos liquenizados para Aguascalientes, con la evaluación del estado de conservación de dos especies endémicas de México

“…También se requirió de la aplicación de las pruebas químicas convencionales (K, C, P, I) y la exposición a la luz UV (Brodo et al 2001). Se consultaron claves taxonómicas especializadas para géneros y especies (Nash III et al 2002, Amtoft et al 2008, Mongkolsuk et al 2015, Brodo et al 2016, Kitaura et al 2019. Para Heterodermia se usaron las claves de Mongkolsuk et al (2015) y de Souza et al (2022), en conjunto con la diferenciación de los cristales de ácido salazinico y ácido norstictico.…”