''Bathelium flavostiolatum'' is a species of corticolous (bark-dwelling)

lichen A lichen ( , ) is a composite organism that arises from algae or cyanobacteria living among filaments of multiple fungi species in a mutualistic relationship.Trypetheliaceae The Trypetheliaceae are a family of mainly lichen-forming fungi in the order Trypetheliales. Genera *'' Alloarthopyrenia'' – 1 sp. *''Aptrootia'' – 3 spp. *'' Architrypethelium'' – 8 spp. *''Astrothelium'' – ca. 275 spp. *'' Bathel ...

. Found in Bolivia, it was formally described as a new species in 2016 by lichenologists Adam Flakus and

André Aptroot André Aptroot (Heemskerk, 1961) is a Dutch mycologist and lichenologist. In 1993 he did his PhD at the University of Utrecht under the supervision of Robbert Gradstein (nl). His dissertation was titled "Systematic studies on pyrenocarpous li ...

. The

type specimen In biology, a type is a particular wiktionary:en:specimen, specimen (or in some cases a group of specimens) of an organism to which the scientific name of that organism is formally attached. In other words, a type is an example that serves to a ...

was collected from the Plan de Manejo AISU in the

Ríos Blanco y Negro Wildlife Reserve Rios Blanco y Negro Wildlife Reserve ( es, Reserva de Vida Silvestre Ríos Blanco y Negro, RVSRByN) is a departmental protected area in Ñuflo de Chávez Province, Ñuflo de Chávez and Guarayos Province, Guarayos provinces in the northern part of ...

(

Guarayos Province Guarayos is a province in the northwestern parts of the Bolivian Santa Cruz Department. Location Guarayos is one of fifteen provinces in the Santa Cruz Department. It borders Beni Department in the north and northwest, Ichilo Province and Obis ...

Santa Cruz Department Santa Cruz () is the largest of the nine constituent departments of Bolivia, occupying about one-third (33.74%) of the country's territory. With an area of , it is slightly smaller than Japan or the US state of Montana. It is located in the e ...

at an altitude of ; there, it was found growing on bark in a lowland

Amazon forest The Amazon rainforest, Amazon jungle or ; es, Selva amazónica, , or usually ; french: Forêt amazonienne; nl, Amazoneregenwoud. In English, the names are sometimes capitalized further, as Amazon Rainforest, Amazon Forest, or Amazon Jungle. ...

. It is only known to occur in similar habitats in Bolivia. The pseudostromata

ostiole An ''ostiole'' is a small hole or opening through which algae or fungi release their mature spores. The word is a diminutive of "ostium", "opening". The term is also used in higher plants, for example to denote the opening of the involuted ...

s (pores) have nearby white spots that contain

lichexanthone Lichexanthone is an organic compound in the structural class of chemicals known as xanthones. Lichexanthone was first isolated and identified by Japanese chemists from a species of leafy lichen in the 1940s. The compound is known to occur in ma ...

; this is a

lichen product Lichen products, also known as lichen substances, are organic compounds produced by a lichen. Specifically, they are secondary metabolites. Lichen products are represented in several different chemical classes, including terpenoids, orcinol deriva ...

that causes these spots to

fluoresce Fluorescence is the emission of light by a substance that has absorbed light or other electromagnetic radiation. It is a form of luminescence. In most cases, the emitted light has a longer wavelength, and therefore a lower photon energy, tha ...

yellow when lit with a long-wavelength

UV light Ultraviolet (UV) is a form of electromagnetic radiation with wavelength from 10 nm (with a corresponding frequency around 30 PHz) to 400 nm (750 THz), shorter than that of visible light, but longer than X-rays. UV radiation i ...

. The species epithet ''flavostiolatum'' refers to this property.

References

Trypetheliaceae Lichen species Lichens described in 2016 Lichens of Bolivia Taxa named by André Aptroot Taxa named by Adam Grzegorz Flakus {{Dothideomycetes-stub