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Lithothelium quadrisporum
Scientific classification
Domain:	Eukaryota
Kingdom:	Fungi
Division:	Ascomycota
Class:	Eurotiomycetes
Order:	Pyrenulales
Family:	Pyrenulaceae
Genus:	Lithothelium
Species:	L. quadrisporum
Binomial name
Lithothelium quadrisporum Aptroot (2006)

Lithothelium quadrisporum is a species of corticolous (bark-dwelling) lichen in the family Pyrenulaceae. Found in Thailand, it was formally described as a new species in 2006 by Dutch lichenologist André Aptroot. The type specimen was collected on the Doi Chiang Dao mountain (Chiang Mai Province) at an altitude of 1,600 m (5,200 ft). Here, in a sheltered secondary rainforest, the thin pale green to brownish thallus of the lichen was found growing on the bark of a tree trunk. The specific name refers to the asci, which are the only consistently four-spored asci in genus Lithothelium.

References

1. Aptroot, André (2006). "Three new species of Lithothelium (Pyrenulaceae) from China and Thailand, with a revised world key and annotated list of species". The Lichenologist. 38 (6): 541–548. doi:10.1017/s0024282906005913. S2CID 86408414.

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