Loengrin Umaña

Jamesiella chaverriae is a species of corticolous (bark-dwelling), crustose lichen in the family Gomphillaceae. Described as a new species in 2006, it is found in Costa Rica and Brazil.

Gyalideopsis macarthurii is a species of corticolous (bark-dwelling) crustose lichen in the family Gomphillaceae. The pale greenish-grey lichen forms thin, shiny crusts on bark and rotting logs in montane cloud forest environments, particularly in exposed areas along forest edges and pastures, and has been documented in Costa Rica, Florida, and Brazil. It is distinguished by its distinctive fruiting bodies with thin triangular lobes covering the margins, extremely small specialized reproductive structures called hyphophores, and its habit of growing on bark rather than leaves, which separates

Gyalideopsis altamirensis is a species of corticolous (bark-dwelling) crustose lichen in the family Gomphillaceae, first described in 2006 from specimens collected in Costa Rica as part of the Ticolichen biodiversity inventory project. The pale greenish-grey lichen forms thin, shiny crusts on tree bark in montane rainforest environments, particularly in secondary forests dominated by Cecropia trees, and is known only from three locations in Costa Rica. It reproduces through distinctive brown to purplish-brown disc-shaped structures that produce large, colourless spores, and while specialized

Coenogonium kalbii is a species of corticolous (bark-dwelling), crustose lichen in the family Coenogoniaceae. It has been found in variety of locations in the southern region of Costa Rica, primarily in humid, shaded microsites within low-mountain rainforest environments.

Coenogonium barbatum is a species of foliicolous (leaf-dwelling) lichen in the family Coenogoniaceae. It is characterised by its distinctive beard-shaped growth, setting it apart from closely related species. Identified and named as a new species in 2006, the lichen has been specifically found at the La Selva Biological Station in Costa Rica. The species name barbatum hints at its beard-like appearance.

Arthonia isidiata is a species of corticolous (bark-dwelling) crustose lichen in the family Arthoniaceae. Found in Central America, it is characterized by its thin, shiny thallus, and isidia (reproductive propagules) that emerge from the surface. Discovered in Costa Rica's Corcovado National Park, and later recorded from Panama, this species thrives in lowland tropical coastal rainforests on smooth bark of smaller, often young trees.

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Paramphisphaeria is a genus of fungi in the family Xylariaceae. This is a monotypic genus, containing the single species Paramphisphaeria costaricensis.

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Haematomma staigeriae is a species of corticolous (bark-dwelling) lichen in the family Haematommataceae. Found in Costa Rica, it was formally described as a new species in 2006 by Matthew Nelsen, Robert Lücking, and Loengrin Umaña. The type specimen was collected by the second author from the Talamanca Ridge in the Pacific La Amistad Conservation Area (Puntarenas) at an elevation between 1,600 and 1,800 m (5,200 and 5,900 ft). Here, in a montane rainforest area with secondary vegetation dominated by Cecropia, the species was found growing on the lower trunks of trees. It is only known from

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Anomomorpha tuberculata is a species of corticolous (bark-dwelling) crustose lichen in the family Graphidaceae. Found in rare cerrado vegetation in southern Costa Rica, it was described as new to science in 2011. It is characterised by its conspicuous tubercles on the thallus and sessile lirellae.

Multiclavula ichthyiformis is a rare terricolous (ground-dwelling) basidiolichen in the family Hygrophoraceae. The lichen produces small, flesh-coloured fruit bodies with flattened, fishtail-shaped tops that grow directly from the soil surface and bear spherical spores on their undersurface. Endemic to a high-elevation bog in Costa Rica, it was discovered in 2007 during a biodiversity survey and remains known only from this single mountain location.

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Corella melvinii is a species of lichen in the family Hygrophoraceae. It forms thin, leaf-like mats that grow over mosses on tree bark in humid mountain rainforests. The lichen is found from Central America to South America, including locations in Costa Rica, Colombia, and Bolivia. Originally classified in a different genus, it was moved to Corella in 2013 based on genetic studies.

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