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Placomaronea Fruticosa
''Placomaronea'' is a genus of lichenized fungi in the family Candelariaceae. It has 6 species. The genus was circumscribed by Finnish lichenologist Veli Räsänen in 1944, with '' Placomaronea candelarioides'' assigned as the type species. The genus was revised by Martin Westberg and colleagues in 2009, who accepted six species in the genus. Two newly described species from Peru were added to the genus in 2025. Species *'' Placomaronea candelarioides'' – South America *'' Placomaronea fruticosa'' – Peru *'' Placomaronea fuegiana'' – southeastern South America *'' Placomaronea kaernefeltii'' – Chile *'' Placomaronea lambii'' – Peru; Ecuador *'' Placomaronea mendozae'' – Argentina; Peru; Arizona (USA) *'' Placomaronea minima'' – Chile; Argentina; southern Africa *''Placomaronea placoidea ''Placomaronea'' is a genus of lichenized fungi in the family Candelariaceae. It has 6 species. The genus was circumscription (taxonomy), circumscribed by Finnish lichenolo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Veli Räsänen
Veli Johannes Paavo Bartholomeus Räsänen (24 August 1888 – 16 July 1953) was a Finnish lichenologist who made contributions to the study and documentation of Nordic and Baltic lichen funga. As a lecturer at various agricultural institutions and the University of Kuopio, he published extensive systematic and floristic works on lichens in Finland, Estonia, and the Petsamo region, including his comprehensive 1951 guide ''Suomen jäkäläkasvio'' (Finnish Lichens). Räsänen curated two major lichen exsiccatae collections, compiling over 1,750 specimens between 1935 and 1952, and described numerous previously unknown lichen taxa. His influence on the field is reflected in several lichen species and two genera named in his honour, and his work with mentor Edvard Vainio helped establish Finland's strong tradition in lichenology. Early life and education Veli Räsänen was born on 24 August 1888 in Simo, Finland. Räsänen's brother was the linguist Martti Räsänen. His paren ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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 of the kingdom (biology)#Six kingdoms (1998), traditional eukaryotic kingdoms, along with Animalia, Plantae, and either Protista or Protozoa and Chromista. A characteristic that places fungi in a different kingdom from plants, bacteria, and some protists is chitin in their cell walls. Fungi, like animals, are heterotrophs; they acquire their food by absorbing dissolved molecules, typically by secreting digestive enzymes into their environment. Fungi do not photosynthesize. Growth is their means of motility, mobility, except for spores (a few of which are flagellated), which may travel through the air or water. Fungi are the principal decomposers in ecological systems. These and other differences place fungi in a single group of related o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Taxa Described In 1944
In biology, a taxon (back-formation from ''taxonomy''; : taxa) is a group of one or more populations of an organism or organisms seen by taxonomists to form a unit. Although neither is required, a taxon is usually known by a particular name and given a particular ranking, especially if and when it is accepted or becomes established. It is very common, however, for taxonomists to remain at odds over what belongs to a taxon and the criteria used for inclusion, especially in the context of rank-based (" Linnaean") nomenclature (much less so under phylogenetic nomenclature). If a taxon is given a formal scientific name, its use is then governed by one of the nomenclature codes specifying which scientific name is correct for a particular grouping. Initial attempts at classifying and ordering organisms (plants and animals) were presumably set forth in prehistoric times by hunter-gatherers, as suggested by the fairly sophisticated folk taxonomies. Much later, Aristotle, and later still ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ascomycota Genera
Ascomycota is a phylum of the kingdom Fungi that, together with the Basidiomycota, forms the subkingdom Dikarya. Its members are commonly known as the sac fungi or ascomycetes. It is the largest phylum of Fungi, with over 64,000 species. The defining feature of this fungal group is the "ascus" (), a microscopic sexual structure in which nonmotile spores, called ascospores, are formed. However, some species of Ascomycota are asexual and thus do not form asci or ascospores. Familiar examples of sac fungi include morels, truffles, brewers' and bakers' yeast, dead man's fingers, and cup fungi. The fungal symbionts in the majority of lichens (loosely termed "ascolichens") such as '' Cladonia'' belong to the Ascomycota. Ascomycota is a monophyletic group (containing all of the descendants of a common ancestor). Previously placed in the Basidiomycota along with asexual species from other fungal taxa, asexual (or anamorphic) ascomycetes are now identified and classified based on m ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Candelariales
The Candelariales are an order of fungi in the monotypic class Candelariomycetes. It contains the families Candelariaceae and Pycnoraceae. The order was circumscribed by Jolanta Miadlikowska, François Lutzoni, and Helge Thorsten Lumbsch as part of a comprehensive phylogenetic classification of the kingdom Fungi published in 2007. The class Candelariomycetes was proposed in 2018 by Hermann Voglmayr and Walter Jaklitsch. Taxonomy The yellow "candle-wax" lichens now grouped in Candelariomycetes were long treated as part of the large class Lecanoromycetes. A multigene study of lichen-forming fungi published in 2007 first recognised them as a distinct order, Candelariales – comprising the families Candelariaceae and Pycnoraceae – but still left the group inside Lecanoromycetes. Even earlier, Miądlikowska and co-workers had informally coined the name "Candelariomycetidae" (2006) for this lineage, and Lücking and colleagues later formalised that name at subclass rank (2017). ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Arizona
Arizona is a U.S. state, state in the Southwestern United States, Southwestern region of the United States, sharing the Four Corners region of the western United States with Colorado, New Mexico, and Utah. It also borders Nevada to the northwest and California to the west, and shares Mexico-United States border, an international border with the Mexican states of Sonora and Baja California to the south and southwest. Its Capital city, capital and List of largest cities, largest city is Phoenix, Arizona, Phoenix, which is the most populous state capital and list of United States cities by population, fifth most populous city in the United States. Arizona is divided into 15 List of counties in Arizona, counties. Arizona is the list of U.S. states and territories by area, 6th-largest state by area and the list of U.S. states and territories by population, 14th-most-populous of the 50 states. It is the 48th state and last of the contiguous United States, contiguous states to be a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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 species that contains the biological Type (biology), type wiktionary:en:specimen, specimen (or specimens). Article 67.1 A similar concept is used for suprageneric groups and called a type genus. In botanical nomenclature, these terms have no formal standing under the International Code of Nomenclature for algae, fungi, and plants, code of nomenclature, but are sometimes borrowed from zoological nomenclature. In botany, the type of a genus name is a specimen (or, rarely, an illustration) which is also the type of a species name. The species name with that type can also be referred to as the type of the genus name. Names of genus and family ranks, the various subdivisions of those ranks, and some higher-rank names based on genus names, have suc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Circumscription (taxonomy)
In biological taxonomy, circumscription is the content of a taxon, that is, the delimitation of which subordinate taxa are parts of that taxon. For example, if we determine that species X, Y, and Z belong in genus A, and species T, U, V, and W belong in genus B, those are our circumscriptions of those two genera. Another systematist might determine that T, U, V, W, X, Y, and Z all belong in genus A. Agreement on circumscriptions is not governed by the Codes of Zoological or Botanical Nomenclature, and must be reached by scientific consensus. A goal of biological taxonomy is to achieve a stable circumscription for every taxon. This goal conflicts, at times, with the goal of achieving a natural classification that reflects the evolutionary history of divergence of groups of organisms. Balancing these two goals is a work in progress, and the circumscriptions of many taxa that had been regarded as stable for decades are in upheaval in the light of rapid developments in molecu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Candelariaceae
''Candelariaceae'' is a family of lichen-forming fungi in the order Candelariales. It contains seven genera and about 73 species of lichens that are typically characterised by their bright yellow colour. These lichens have diverse growth forms, including crusty, scaly, and small leaf-like structures, and are found worldwide, particularly in arid and mountainous regions of both hemispheres. The family includes well-known genera such as '' Candelaria'', '' Candelariella'', and '' Placomaronea'', with their classification continuing to evolve based on molecular studies. Taxonomy The Finnish lichenologist Rainar Hakulinen proposed Candelariaceae in 1954 when he removed the bright-yellow foliose genus ''Candelaria'' from Parmeliaceae and united it with the crustose ''Candelariella'' and the umbilicate '' Placomaronea''. ''Candelaria'' had formerly been placed in the Parmeliaceae by Alexander Zahlbruckner in 1926, while the crustose lichen genus '' Candelariella'' was classified ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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), mutualistic relationship.Introduction to Lichens – An Alliance between Kingdoms . University of California Museum of Paleontology. . Lichens are the lifeform that first brought the term symbiosis (as ''Symbiotismus'') into biological context. Lichens have since been recognized as important actors in nutrient cycling and producers which many higher trophic feeders feed on, such as reindeer, gastropods, nematodes, mites, and springtails. Lichens have properties different from those of their component organisms. They come in man ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Placomaronea Candelarioides
''Placomaronea candelarioides'' is a species of saxicolous (rock-dwelling), foliose lichen in the family Candelariaceae. It is found in South America. This lichen species can be recognised by its distinct (single attachment point), (single ) growth form. Taxonomy ''Placomaronea candelarioides'' was formally described as a new species in 1944 by Finnish lichenologist Veli Räsänen. It is the type species of the genus '' Placomaronea'', which was circumscribed by Räsänen to contain this species. The type specimen of ''P. candelarioides'' was found in Mendoza, Argentina. A variety of this lichen, ''Placomaronea candelarioides'' var. ''lacinulata'', was proposed by Rolf Santesson in 1944. Description ''Placomaronea candelarioides'' has a leaf-like (foliose) structure, uniquely anchored by a single point, a trait referred to as and . Though most specimens adhere to this typical appearance, some have shown variations, such as having numerous individual, little branched, an ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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 binomial nomenclature, the genus name forms the first part of the binomial species name for each species within the genus. :E.g. ''Panthera leo'' (lion) and ''Panthera onca'' (jaguar) are two species within the genus ''Panthera''. ''Panthera'' is a genus within the family Felidae. The composition of a genus is determined by taxonomy (biology), taxonomists. The standards for genus classification are not strictly codified, so different authorities often produce different classifications for genera. There are some general practices used, however, including the idea that a newly defined genus should fulfill these three criteria to be descriptively useful: # monophyly – all descendants of an ancestral taxon are grouped together (i.e. Phylogeneti ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
