Emerson Luiz Gumboski

Cladonia litoralis is a species of fruticose lichen in the family Cladoniaceae. It was described in 2011 from the Atlantic coast of Santa Catarina State in southern Brazil. There it forms dense, convex cushions of overlapping squamules (scale-like lobes) on exposed granitic coastal rocks. It has yellowish-green, glossy squamules; small podetia with closed branch angles (axils); frequent brown pycnidia; and only one detected secondary metabolite, fumarprotocetraric acid.

Calopadia saxicola is a species of saxicolous (rock-dwelling) crustose lichen in the family Ectolechiaceae. It is found on the rocky shores of southern Brazil, where it thrives in the shade of vegetated zones and grows directly on rocks away from other crustose lichens. The lichen was formally described as a new species in 2015. Calopadia saxicola stands out from its close relatives due to its well-defined thallus, reddish-brown disc, thicker hymenium, and smaller conidia.

Astrothelium sinuosum is a species of corticolous (bark-dwelling), crustose lichen in the family Trypetheliaceae. Found in Brazil, it was formally described as a new species in 2016 by André Aptroot and Emerson Gumboski. The type specimen was collected by the second author from the Rio Pardinho e Rio Vermelho Environmental Protection Area (São Paulo); there, in an Atlantic Forest habitat, it was found growing on smooth tree bark. The lichen has a somewhat shiny, bullate, olive-green thallus with a cortex but lacking a prothallus; it measures up to 7 cm (2.8 in) in diameter. The presence of

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Dendrographa austrosorediata is a species of saxicolous (rock-dwelling), crustose lichen in the family Roccellaceae. It was discovered and described as a new species in 2017 from coastal granite cliffs in southern Brazil. The lichen is characterised by its whitish-grey crusty surface covered with tiny reproductive granules and is found only in the spray zone above the high tide line.

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