''Megalotremis'' is a

genus Genus (; : genera ) is a taxonomic rank above species and below family (taxonomy), family as used in the biological classification of extant taxon, living and fossil organisms as well as Virus classification#ICTV classification, viruses. In bino ...

lichen A lichen ( , ) is a hybrid colony (biology), colony of algae or cyanobacteria living symbiotically among hypha, filaments of multiple fungus species, along with yeasts and bacteria embedded in the cortex or "skin", in a mutualism (biology), m ...

-forming

fungi A fungus (: fungi , , , or ; or funguses) is any member of the group of eukaryotic organisms that includes microorganisms such as yeasts and mold (fungus), molds, as well as the more familiar mushrooms. These organisms are classified as one ...

in the family

Monoblastiaceae The Monoblastiaceae are a family of lichen-forming fungi in the monotypic order Monoblastiales. It contains six genera. These lichens typically form inconspicuous thin crusts or films on bark, rock, or leaves, often appearing as little more th ...

. It has 16 species. The genus was

circumscribed In geometry, a circumscribed circle for a set of points is a circle passing through each of them. Such a circle is said to ''circumscribe'' the points or a polygon formed from them; such a polygon is said to be ''inscribed'' in the circle. * Circum ...

by Dutch lichenologist

André Aptroot André Aptroot ( Heemskerk, 1961) is a Dutch mycologist and lichenologist. His primary research focus is on biodiversity, particularly tropical lichens, encompassing systematics, floristic surveys, and taxonomic reviews. A prolific research ...

in 1991, with '' Megalotremis verrucosa'' assigned as the

type species In International_Code_of_Zoological_Nomenclature, zoological nomenclature, a type species (''species typica'') is the species name with which the name of a genus or subgenus is considered to be permanently taxonomically associated, i.e., the spe ...

. ''Megalotremis'' is a genus, meaning its species have ascocarps: spherical or flask-shaped,

sessile Sessility, or sessile, may refer to: * Sessility (motility), organisms which are not able to move about * Sessility (botany), flowers or leaves that grow directly from the stem or peduncle of a plant * Sessility (medicine), tumors and polyps that ...

or partly immersed in the

thallus Thallus (: thalli), from Latinized Greek (), meaning "a green shoot" or "twig", is the vegetative tissue of some organisms in diverse groups such as algae, fungi, some liverworts, lichens, and the Myxogastria. A thallus usually names the entir ...

, with a single opening (

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

) and enclosed by a distinct wall.

Species

* '' Megalotremis biocellata'' * '' Megalotremis cauliflora'' * '' Megalotremis chibaensis'' – Japan * '' Megalotremis cylindrica'' – Sri Lanka * '' Megalotremis dolabrata'' –

New Caledonia New Caledonia ( ; ) is a group of islands in the southwest Pacific Ocean, southwest of Vanuatu and east of Australia. Located from Metropolitan France, it forms a Overseas France#Sui generis collectivity, ''sui generis'' collectivity of t ...

* '' Megalotremis elegans'' * '' Megalotremis flavovulcana'' * '' Megalotremis holopolia'' * '' Megalotremis immersa'' * ''

Megalotremis infernalis ''Megalotremis'' is a genus of lichen-forming fungi in the family Monoblastiaceae. It has 16 species. The genus was circumscription (taxonomy), circumscribed by Dutch lichenologist André Aptroot in 1991, with ''Megalotremis verrucosa'' assigned ...

'' * '' Megalotremis lateralis'' – Costa Rica * '' Megalotremis megalospora'' * '' Megalotremis monospora'' * '' Megalotremis nemorosa'' * '' Megalotremis pustulata'' – Papua New Guinea * '' Megalotremis verrucosa'' The species formerly known as ''Megalotremis endobrya'' is now '' Acrocordia endobrya''.

References

{{Taxonbar, from=Q10579714 Dothideomycetes Dothideomycetes genera Lichen genera Taxa described in 1991 Taxa named by André Aptroot