''Zwackhiomyces parmotrematis'' is a species of lichenicolous fungus in the family

Xanthopyreniaceae Xanthopyreniaceae is a family of lichen-forming fungi in the order Collemopsidiales. The family was circumscribed by lichenologist Alexander Zahlbruckner Alexander Zahlbruckner (31 May 1860, Svätý Jur – 1938, Vienna) was an Austrian- H ...

. Found in

Suriname Suriname (; srn, Sranankondre or ), officially the Republic of Suriname ( nl, Republiek Suriname , srn, Ripolik fu Sranan), is a country on the northeastern Atlantic coast of South America. It is bordered by the Atlantic Ocean to the north ...

, it was formally described as a new species in 2018 by Dutch lichenologist Pieter van den Boom. The

type Type may refer to: Science and technology Computing * Typing, producing text via a keyboard, typewriter, etc. * Data type, collection of values used for computations. * File type * TYPE (DOS command), a command to display contents of a file. * Ty ...

was collected west of

Groningen Groningen (; gos, Grunn or ) is the capital city and main municipality of Groningen province in the Netherlands. The ''capital of the north'', Groningen is the largest place as well as the economic and cultural centre of the northern part of t ...

( Saramacca District) in an abandoned '' Citrus'' orchard. Here it was found growing on the thallus of '' Parmotrema praesorediosum''. The fungus does not cause visible damage to its host, such as discolouration or the formation of

gall Galls (from the Latin , 'oak-apple') or ''cecidia'' (from the Greek , anything gushing out) are a kind of swelling growth on the external tissues of plants, fungi, or animals. Plant galls are abnormal outgrowths of plant tissues, similar to be ...

s; rather, it produces tiny (50–100

μm The micrometre ( international spelling as used by the International Bureau of Weights and Measures; SI symbol: μm) or micrometer (American spelling), also commonly known as a micron, is a unit of length in the International System of Unit ...

diameter) black, spherical perithecia that are immersed in the host thallus. The

specific epithet In taxonomy, binomial nomenclature ("two-term naming system"), also called nomenclature ("two-name naming system") or binary nomenclature, is a formal system of naming species of living things by giving each a name composed of two parts, bot ...

''parmotrematis '' refers to the genus of its

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lichen.

References

Xanthopyreniaceae Fungi described in 2018 Fungi of South America Lichenicolous fungi Fungus species {{Dothideomycetes-stub