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Physcia Occidentalis
''Physcia occidentalis'' is an obligately Saxicolous lichen, saxicolous lichenized fungus in the family Physciaceae that reproduces through the process of fragmentation, "primarily through the production of largely terminal ". It occurs in a multitude of locations, all the way from British Columbia to California, but has also been seen in Colorado, primarily in forest environments. It is very similar to ''Physcia rhizinata'' and they have been confused for each other before. References Physcia, occidentalis Lichens described in 2020 Taxa named by Bruce McCune Lichens of Western Canada Lichens of the Northwestern United States Lichen species Taxa named by Theodore Lee Esslinger {{Caliciales-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bruce McCune
Bruce Pettit McCune (born 1952) is an American lichenologist, botanist, plant ecologist, and software developer for analysis of ecological data. Biography McCune grew up in Cincinnati. He completed his freshman year of college at Lawrence University in Appleton, Wisconsin, and then transferred to the University of Montana in the autumn of 1971. There he graduated in 1974 with a bachelor's degree in botany. From 1971 to 1974 McCune and his then girlfriend, Patricia S. Muir, spent considerable time on Mount Sentinel, where they investigated lichens, mosses, and other plants. From 1974 to 1975 he travelled and also worked for two summers in Montana for the Bureau of Land Management. From 1976 to 1979 he was a graduate student at the University of Montana, where he graduated with a master's degree. In August 1979 he married Patricia Muir. She graduated in 1975 with a bachelor's degree in botany from the University of Montana. In 1979 the couple matriculated as graduate students at the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Saxicolous Lichen
A saxicolous lichen is a lichen that grows on rock. The prefix "sax" from the Latin means "rock" or "stone". Characteristics Saxicolous lichens exhibit very slow growth rates. They may develop on rock substrates for long periods of time, given the absence of external disturbances. The importance of the mineral composition of the rock substrate, as well as the elemental geochemistry Geochemistry is the science that uses the tools and principles of chemistry to explain the mechanisms behind major geological systems such as the Earth's crust and its oceans. The realm of geochemistry extends beyond the Earth, encompassing the e ... is also important to the distribution of saxicolous lichens, but the relationship between the substrate influence on lichens, either chemical or textural, is still obscure. Communities of saxicolous lichens are often species-rich in terms of number. References Lichenology {{lichen-stub ... [...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] |
Physciaceae
The Physciaceae are a family of mostly lichen-forming fungi belonging to the class Lecanoromycetes in the division Ascomycota. A 2016 estimate placed 19 genera and 601 species in the family. Description The Physiaceae family includes various growth forms such as foliose, fruticose, , stipitate, crustose, and even evanescent types (where certain parts, such as basal squamules, become less noticeable or disappear over time as other structures develop). Some members of this family may also be lichenicolous, meaning they grow on other lichens. These lichens can exhibit features such as , isidia, and soredia, or may lack them entirely. The upper of Physiaceae lichens can be , , or absent. Their photobiont, or the symbiotic algae living within the lichen, is typically a unicellular green alga from the genus ''Trebouxia'', with a diameter ranging from 5 to 20 μm. The medulla can vary from poorly to well-developed or may even be absent, and it often contains lichen substanc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
British Columbia
British Columbia is the westernmost Provinces and territories of Canada, province of Canada. Situated in the Pacific Northwest between the Pacific Ocean and the Rocky Mountains, the province has a diverse geography, with rugged landscapes that include rocky coastlines, sandy beaches, forests, lakes, mountains, inland deserts and grassy plains. British Columbia borders the province of Alberta to the east; the territories of Yukon and Northwest Territories to the north; the U.S. states of Washington (state), Washington, Idaho and Montana to the south, and Alaska to the northwest. With an estimated population of over 5.7million as of 2025, it is Canada's Population of Canada by province and territory, third-most populous province. The capital of British Columbia is Victoria, British Columbia, Victoria, while the province's largest city is Vancouver. Vancouver and its suburbs together make up List of census metropolitan areas and agglomerations in Canada, the third-largest metropolit ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
California
California () is a U.S. state, state in the Western United States that lies on the West Coast of the United States, Pacific Coast. It borders Oregon to the north, Nevada and Arizona to the east, and shares Mexico–United States border, an international border with the Mexico, Mexican state of Baja California to the south. With almost 40million residents across an area of , it is the List of states and territories of the United States by population, largest state by population and List of U.S. states and territories by area, third-largest by area. Prior to European colonization of the Americas, European colonization, California was one of the most culturally and linguistically diverse areas in pre-Columbian North America. European exploration in the 16th and 17th centuries led to the colonization by the Spanish Empire. The area became a part of Mexico in 1821, following Mexican War of Independence, its successful war for independence, but Mexican Cession, was ceded to the U ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Colorado
Colorado is a U.S. state, state in the Western United States. It is one of the Mountain states, sharing the Four Corners region with Arizona, New Mexico, and Utah. It is also bordered by Wyoming to the north, Nebraska to the northeast, Kansas to the east, and Oklahoma to the southeast. Colorado is noted for its landscape of mountains, forests, High Plains (United States), high plains, mesas, canyons, plateaus, rivers, and desert lands. It encompasses most of the Southern Rocky Mountains, as well as the northeastern portion of the Colorado Plateau and the western edge of the Great Plains. Colorado is the List of U.S. states and territories by area, eighth-largest U.S. state by area and the List of U.S. states and territories by population, 21st by population. The United States Census Bureau estimated the population of Colorado to be 5,957,493 as of July 1, 2024, a 3.2% increase from the 2020 United States census. The region has been inhabited by Native Americans in the United St ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Physcia Rhizinata
''Physcia rhizinata'' is a species of corticolous (bark-dwelling), lichenized fungus in the family Physciaceae. It is a "typically fertile species lacking asexual propagules" commonly mistaken for '' P. stellaris'' due to their physical similarities. It has a close evolutionary relationship with ''P. occidentalis'' despite being morphologically dissimilar. ''Physcia rhizinata'' is only known to be found in California. At least one specimen has been located in a canyon of the South Cow Mountain OHV Management Area owned by the Bureau of Land Management The Bureau of Land Management (BLM) is an agency within the United States Department of the Interior responsible for administering federal lands, U.S. federal lands. Headquartered in Washington, D.C., the BLM oversees more than of land, or one ... in a canyon live oak forest. References rhizinata Lichens of the United States Lichens described in 2020 Lichen species Taxa named by Bruce McCune Taxa named by Th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Physcia
''Physcia'' is a genus of lichen-forming fungi in the family Physciaceae. The widely distributed genus contains about 80 species. The genus is cosmopolitan distribution, cosmopolitan, and has been extensively studied in various regions in the past several decades, with significant biodiversity in South America identified as a central diversity hotspot. ''Physcia'' species are foliose lichen, foliose, lichens that grow with a loose to close appressed habit. Their upper surface is typically whitish, pale greenish, green-grey, or dark grey in colour. The thallus colour remains relatively unchanged when moistened. ''Physcia'' lichens typically grow corticolous lichen, on bark, corticolous lichen, on wood, or saxicolous lichen, rock, although they have occasionally been recorded dwelling on man-made structures. They thrive in nutrient-rich environments and are expanding rapidly in urban areas of the United Kingdom previously affected by sulfur dioxide, SO2 pollution. The main charac ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lichens Described In 2020
A lichen ( , ) is a hybrid colony of algae or cyanobacteria living symbiotically among filaments of multiple fungus species, along with yeasts and bacteria embedded in the cortex or "skin", in a 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 and producers which many higher trophic feeders feed on, such as reindeer, gastropods, nematodes, mites, and springtails. Lich ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Taxa Named By Bruce McCune
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] |
Lichens Of Western Canada
A lichen ( , ) is a hybrid colony of algae or cyanobacteria living symbiotically among filaments of multiple fungus species, along with yeasts and bacteria embedded in the cortex or "skin", in a 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 and producers which many higher trophic feeders feed on, such as reindeer, gastropods, nematodes, mites, and springtails. Lich ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
