Loreleia is a genus

Genus

In biology, a genus is a low-level taxonomic rank used in the biological classification of living and fossil organisms, which is an example of definition by genus and differentia...

 of brightly colored agaric

Agaric

An agaric is a type of fungal fruiting body characterized by the presence of a pileus that is clearly differentiated from the stipe , with lamellae on the underside of the pileus. "Agaric" can also refer to a basidiomycete species characterized by an agaric-type fruiting body...

s in the Hymenochaetales

Hymenochaetales

The Hymenochaetales are an order of fungi in the class Agaricomycetes. The order in its current sense is based on molecular research and not on any unifying morphological characteristics. According to one 2008 estimate, the Hymenochaetales contain around 600 species worldwide, mostly corticioid...

 that have an omphalinoid

Omphalina

Omphalina is a genus of small agarics with white, nonamyloid, basidiospores and decurrent gills. Typically the cap has a deep central depression giving the umbrella-like to funnel-shaped cap the appearance of a belly button, or a belly with a navel...

 morphology. They inhabit moss

Moss

Mosses are small, soft plants that are typically 1–10 cm tall, though some species are much larger. They commonly grow close together in clumps or mats in damp or shady locations. They do not have flowers or seeds, and their simple leaves cover the thin wiry stems...

es and or liverwort

Marchantiophyta

The Marchantiophyta are a division of bryophyte plants commonly referred to as hepatics or liverworts. Like other bryophytes, they have a gametophyte-dominant life cycle, in which cells of the plant carry only a single set of genetic information....

s on soil in temperate

Temperate

In geography, temperate or tepid latitudes of the globe lie between the tropics and the polar circles. The changes in these regions between summer and winter are generally relatively moderate, rather than extreme hot or cold...

 regions of the Northern Hemisphere

Northern Hemisphere

The Northern Hemisphere is the half of a planet that is north of its equator—the word hemisphere literally means “half sphere”. It is also that half of the celestial sphere north of the celestial equator...

. Phylogenetically related agarics are in the genera Contumyces

Contumyces

Contumyces is a genus of brightly colored bryophilous agarics in the Hymenochaetales that have an omphalinoid morphology, and therefore were previously classified in Omphalina. They inhabit mossy silty or sandy soils in the Northern Hemisphere...

, Gyroflexus

Gyroflexus

A monotypic genus with a yellowish-ivory colored omphalinoid agaric in the Hymenochaetales that grows on living Sphagnum Phylogenetically related agarics are in the genera Rickenella, Blasiphalia, Loreleia, Cantharellopsis and Contumyces, as well as the stipitate-stereoid genera Muscinupta and ...

, Rickenella

Rickenella

Rickenella is a genus of brightly colored bryophilous agarics in the Hymenochaetales that have an omphalinoid morphology. They inhabit mosses on mossy soils, peats, tree trunks and logs in temperate regions of both the Northern and Southern Hemispheres...

, Cantharellopsis

Cantharellopsis

Cantharellopsis is a tan- to whitish-colored bryophilous monotypic genus in the Agaricales. The fruit bodies of the single species Cantharellus prescottii has a form intermediate between an Omphalina and a chanterelle because of its forked, fold-like gills. It inhabits moss on calcareous soils in...

and Blasiphalia

Blasiphalia

Blasiphalia is a monotypic genus with a honey colored omphalinoid agaric in the Hymenochaetales that grows with the liverwort genus Blasia Phylogenetically related agarics are in the genera Rickenella, Gyroflexus, Loreleia, Cantharellopsis and Contumyces, as well as the stipitate-stereoid genera...

, as well as the stipitate

Stipe (mycology)

thumb|150px|right|Diagram of a [[basidiomycete]] stipe with an [[annulus |annulus]] and [[volva |volva]]In mycology a stipe refers to the stem or stalk-like feature supporting the cap of a mushroom. Like all tissues of the mushroom other than the hymenium, the stipe is composed of sterile hyphal...

-stereoid

Stereum

Stereum is type genus of the Stereaceae family of fungi, in the Russulales order. Until recently, the genus was classified in the Corticiaceae family, of the Corticiales order. However, it was given its own family as a result of the split-up of the Corticiales. Common names for species of this...

 genera Muscinupta

Muscinupta

Muscinupta is a fungal genus that produces small white delicate fan-shaped to cupulate fruitbodies on mosses. It is monotypic, containing the single species Muscinupta laevis...

and Cotylidia

Cotylidia

Cotylidia is a fungal genus characterized by small to moderately sized, white to palely- yet brightly-colored, stalked, fan-shaped to funnel-shaped fruitbodies with a smooth to wrinkled hymenium, tissues composed of monomitic hyphae, basidia producing smooth, nonamyloid spores, the absence of...

and the clavaroid genus, Alloclavaria

Alloclavaria

Alloclavaria is a clavarioid genus in the Hymenochaetales recently segregated from Clavaria by molecular analysis. Phylogenetically related fungi are in the agaricoid genera Rickenella, Contumyces, Gyroflexus, Loreleia, Cantharellopsis and Blasiphalia, as well as the stipitate stereoid genera...

. However, the large number of DNA

DNA

Deoxyribonucleic acid is a nucleic acid that contains the genetic instructions used in the development and functioning of all known living organisms . The DNA segments that carry this genetic information are called genes, but other DNA sequences have structural purposes, or are involved in...

 base-pair changes causes a long-branch to form in phylogenetic analyses depicted as cladogram

Cladogram

A cladogram is a diagram used in cladistics which shows ancestral relations between organisms, to represent the evolutionary tree of life. Although traditionally such cladograms were generated largely on the basis of morphological characters, DNA and RNA sequencing data and computational...

s.

In the field, to the eye, Loreleia is most similar to Rickenella because of the orangish colors and omphalinoid shape, but microscopically it differs by the absence of cystidia that in Rickenella make the latter minutely fuzzy as seen with a hand lens. Loreleia penetrates the rhizoid

Rhizoid

Rhizoids are thread-like growths from the base or bottom of a plant, found mainly in lower groups such as algae, fungi, bryophytes and pteridophytes, that function like roots of higher plants ....

s of liverworts and may form a type of symbiosis

Symbiosis

Symbiosis is close and often long-term interaction between different biological species. In 1877 Bennett used the word symbiosis to describe the mutualistic relationship in lichens...

 with them, but in axenic

Axenic

In biology, axenic describes a culture of an organism that is entirely free of all other "contaminating" organisms. The earliest axenic cultures were of bacteria or unicellular eukaryotes, but axenic cultures of many multicellular organisms are also possible...

 culture tests, L. marchantiae killed Marchantia polymorpha when directly inoculated in contrast to the absence of necrosis in nature in situ.

Older literature often treats the species, like L. postii and L. marchantiae, in the genera Omphalina

Omphalina

Omphalina is a genus of small agarics with white, nonamyloid, basidiospores and decurrent gills. Typically the cap has a deep central depression giving the umbrella-like to funnel-shaped cap the appearance of a belly button, or a belly with a navel...

or Gerronema

Gerronema

Gerronema is a genus of small- to medium-sized lignicolous agarics with white, nonamyloid, basidiospores and decurrent lamellae. The genus, first described by American mycologist Rolf Singer in 1951, contains 13 species.-Description:...

.

Etymology

Loreleia was named after the contemporary American mycologist, Lorelei L. Norvell, who studied omphalinoid agarics.

External links

• www.nahuby.sk Image of Loreleia postii