Tapellaria is a genus of leaf-dwelling lichens in the family Pilocarpaceae. These lichens form thin, paint-like crusts on their host surfaces and are found mainly in tropical regions of the Americas, with about twenty known species. The genus was first proposed in 1890 by the lichenologist Johannes Müller Argoviensis. Tapellaria lichens reproduce both sexually through small black disc-shaped structures and asexually through distinctive hood-shaped outgrowths that release thread-like spores.

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