Juliane C. Valões-Araújo, Felipe Wartchow

Discovery of Tremella spectabilis (Tremellales, Basidiomycota) in a semiarid montane forest in Brazil

Abstract Tremella spectabilis is recorded for the first time from the caatinga biome of Paraíba, the northeastern region of Brazil. It was collected in a montane forest surrounded by caatinga vegetation (locally called ‘brejo de altitude’). The species is characterised by the yellow basidioma with a mat surface covered by a fine whitish prunina, basidiospores measuring 7.5–9.7(–10.2) × 5.1–8.2 µm, and the basidioma context possessing hyphae with frequent swelling between the septa and sometimes open, showing slightly conspicuous medallion clamps, similar to those found in its synonym, Tremella australiensis. The closest species to Tremella spectabilis is Tremella aurantia sensu stricto, which differs in having clavate, distinctly stalked basidia, and a context presenting exclusively thin-walled, narrow and uninflated hyphae.

Doi https://doi.org/10.35513/Botlit.2025.4.5

Keywords fungi, Neotropics, taxonomy, Tremellomycetes

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