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Bagliettoa Suzaeana
''Bagliettoa'' is a genus of lichen-forming fungi in the family Verrucariaceae. ''Bagliettoa'' species are endolithic, growing between the grains of solid rock. These lichens are almost invisible to the naked eye, living mostly hidden within limestone and other calcium-rich rocks with only a thin polished rim visible on the surface. They reproduce through tiny flask-shaped fruiting bodies that bore neat pits into the rock as they develop. Taxonomy The genus was circumscribed by the Italian lichenologist Abramo Bartolommeo Massalongo in 1853. He assigned ''Bagliettoa limborioides'' as the type species. The group comprises endolithic lichens, meaning their thalli are immersed within calcareous rock substrates. For much of the twentieth century, species now placed in ''Bagliettoa'' were inconsistently classified, with many retained in the genus ''Verrucaria''. Although Massalongo and later authors recognised some of their distinctive traits—such as a shield-like with a star-sha ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bagliettoa Limborioides
''Bagliettoa'' is a genus of lichen-forming fungi in the family Verrucariaceae. ''Bagliettoa'' species are endolithic lichen, endolithic, growing between the grains of solid rock. These lichens are almost invisible to the naked eye, living mostly hidden within limestone and other calcium-rich rocks with only a thin polished rim visible on the surface. They reproduce through tiny flask-shaped fruiting bodies that bore neat pits into the rock as they develop. Taxonomy The genus was circumscription (taxonomy), circumscribed by the Italian lichenologist Abramo Bartolommeo Massalongo in 1853. He assigned ''Bagliettoa limborioides'' as the type species. The group comprises endolithic lichens, meaning their thallus, thalli are immersed within calcareous rock substrates. For much of the twentieth century, species now placed in ''Bagliettoa'' were inconsistently classified, with many retained in the genus ''Verrucaria''. Although Massalongo and later authors recognised some of their dis ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Antonín Vězda
Antonín (Toni) Vězda (25 November 1920 – 10 November 2008) was a Czech lichenologist. After completing a university education that was postponed by World War II, Vězda taught botany at the Czech University of Life Sciences Prague, Czech University of Life Sciences. In 1958, he was dismissed from his university position as a result of the restrictions placed on academic freedoms by the Czechoslovak Socialist Republic, communist regime in power. He eventually was hired as a lichen researcher by the Czechoslovak Academy of Sciences, who allowed him to work from his apartment, which served also as an office and herbarium. Vězda was a productive worker, publishing nearly 400 scientific papers between 1948 and 2008, most solitarily, describing hundreds of new taxon, taxa, and building up a herbarium scientific collection, collection of more than 300,000 specimens. He was praised for his series of exsiccata, exsiccates – sets of dried herbarium specimens – assembled with bot ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Asterochloris
''Asterochloris'' is a genus of green algae in the family Trebouxiophyceae. It is a common in lichen, occurring in the thalli of more than 20 lichen genera worldwide. ''Asterochloris'' is distinguishable from the morphologically similar genus ''Trebouxia'', primarily due to its deeply lobed chloroplast, the placement of the chloroplast along the cell's periphery before the initiation of zoospore or aplanospore formation, and its tendency to primarily reproduce asexually through the production of aplanospores. Taxonomy The genus was circumscribed in 1980 by Elisabeth Tschermak-Woess, with '' Asterochloris phycobiontica'' assigned as the type species. She differentiated it from the related genus ''Trebouxia'' by differences in chloroplast morphology. Later molecular research showed that ''Trebouxia'' was paraphyletic, and that some ''Trebouxia'' species were closely related to genus ''Asterochloris''. In 2010, Škaloud and Peksa proposed to split the genus ''Trebouxia'' and f ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Green Alga
The green algae (: green alga) are a group of chlorophyll-containing autotrophic eukaryotes consisting of the phylum Prasinodermophyta and its unnamed sister group that contains the Chlorophyta and Charophyta/ Streptophyta. The land plants ( Embryophytes) have emerged deep within the charophytes as a sister of the Zygnematophyceae. Since the realization that the Embryophytes emerged within the green algae, some authors are starting to include them. The completed clade that includes both green algae and embryophytes is monophyletic and is referred to as the clade Viridiplantae and as the kingdom Plantae. The green algae include unicellular and colonial flagellates, most with two flagella per cell, as well as various colonial, coccoid (spherical), and filamentous forms, and macroscopic, multicellular seaweeds. There are about 22,000 species of green algae, many of which live most of their lives as single cells, while other species form coenobia (colonies), long filaments, or ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Medulla (lichenology) zone, but above the lower cortex.Galloway, D.J. (1992). Flora of Australia - ''Lichen Glossary'' The medulla generally has a cottony appearance. It is the widest layer of a heteromerous lichen thallus.
The medulla is a horizontal layer within a lichen thallus. It is a loosely arranged layer of interlaced hyphae below the upper cortex and photobiont 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. References Fungal morphology and anatomy Lichenology {{lichen-stub ...[...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Micrite
Micrite is a limestone constituent formed of calcareous particles ranging in diameter up to four μm formed by the recrystallization of lime mud. Flügel, Erik, ''Microfacies of Carbonate Rocks: Analysis, Interpretation and Application,'' Springer, pp 74-94, 2004 The term was coined in 1959 by Robert L. Folk for his carbonate rock classification system. Micrite is derived from MICRocrystalline calcITE. In the Folk classification micrite is a carbonate rock dominated by fine-grained calcite Calcite is a Carbonate minerals, carbonate mineral and the most stable Polymorphism (materials science), polymorph of calcium carbonate (CaCO3). It is a very common mineral, particularly as a component of limestone. Calcite defines hardness 3 on .... Carbonate rocks that contain fine-grained calcite in addition to allochems are named ''intramicrite'', ''oomicrite'', ''biomicrite'' or ''pelmicrite'' under the Folk classification depending on the dominant allochem. Micrite is lime mud, c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Calcite
Calcite is a Carbonate minerals, carbonate mineral and the most stable Polymorphism (materials science), polymorph of calcium carbonate (CaCO3). It is a very common mineral, particularly as a component of limestone. Calcite defines hardness 3 on the Mohs scale of mineral hardness, based on Scratch hardness, scratch hardness comparison. Large calcite crystals are used in optical equipment, and limestone composed mostly of calcite has numerous uses. Other polymorphs of calcium carbonate are the minerals aragonite and vaterite. Aragonite will change to calcite over timescales of days or less at temperatures exceeding 300 °C, and vaterite is even less stable. Etymology Calcite is derived from the German , a term from the 19th century that came from the Latin word for Lime (material), lime, (genitive ) with the suffix ''-ite'' used to name minerals. It is thus a Doublet (linguistics), doublet of the word ''wikt:chalk, chalk''. When applied by archaeology, archaeologists and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hypha
A hypha (; ) is a long, branching, filamentous structure of a fungus, oomycete, or actinobacterium. In most fungi, hyphae are the main mode of vegetative growth, and are collectively called a mycelium. Structure A hypha consists of one or more cells surrounded by a tubular cell wall. In most fungi, hyphae are divided into cells by internal cross-walls called "septa" (singular septum). Septa are usually perforated by pores large enough for ribosomes, mitochondria, and sometimes nuclei to flow between cells. The major structural polymer in fungal cell walls is typically chitin, in contrast to plants and oomycetes that have cellulosic cell walls. Some fungi have aseptate hyphae, meaning their hyphae are not partitioned by septa. Hyphae have an average diameter of 4–6 μm. Growth Hyphae grow at their tips. During tip growth, cell walls are extended by the external assembly and polymerization of cell wall components, and the internal production of new cell membrane. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Habit (biology)
Habit, equivalent to habitus in some applications in biology, refers variously to aspects of behaviour or structure, as follows: *In zoology (particularly in ethology), ''habit'' usually refers to aspects of more or less predictable ''behaviour'', instinctive or otherwise, though it also has broader application. ''Habitus'' refers to the characteristic form or morphology of a species. *In botany, the plant habit is the characteristic form in which a given species of plant grows.Jackson, Benjamin, Daydon; A Glossary of Botanic Terms with their Derivation and Accent; Published by Gerald Duckworth & Co. London, 4th ed 1928 Behavior In zoology, ''habit'' (not to be confused with ''habitus'' as described below) usually refers to a specific behavior pattern, either adopted, learned, pathological, innate, or directly related to physiology. For example: * ...the atwas in the ''habit'' of springing upon the oor knockerin order to gain admission... * If these sensitive parrots are ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bagliettoa Calciseda
''Bagliettoa'' is a genus of lichen-forming fungi in the family Verrucariaceae. ''Bagliettoa'' species are endolithic, growing between the grains of solid rock. These lichens are almost invisible to the naked eye, living mostly hidden within limestone and other calcium-rich rocks with only a thin polished rim visible on the surface. They reproduce through tiny flask-shaped fruiting bodies that bore neat pits into the rock as they develop. Taxonomy The genus was circumscribed by the Italian lichenologist Abramo Bartolommeo Massalongo in 1853. He assigned ''Bagliettoa limborioides'' as the type species. The group comprises endolithic lichens, meaning their thalli are immersed within calcareous rock substrates. For much of the twentieth century, species now placed in ''Bagliettoa'' were inconsistently classified, with many retained in the genus ''Verrucaria''. Although Massalongo and later authors recognised some of their distinctive traits—such as a shield-like with a star-s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bagliettoa Marmorea
''Bagliettoa marmorea'' is a species of saxicolous (rock-dwelling), crustose lichen in the family Verrucariaceae. It is endolithic on calcareous rocks, meaning it grows under and around the rock crystals. The colour of the lichen is purple to pink, although sometimes it is grey with purple pigments visible only around the perithecia. It does not have a shield-shaped , which is typical of several other species in genus '' Bagliettoa''. The excipulum (the rim of tissue around the ascomata) measures 0.2–0.3 mm in diameter and lacks colour other than the upper part, which is purple. Ascospores are 13–30 by 9–15 μm. ''Bagliettoa marmorea'' is widespread in Europe. It has also been recorded from North America, although it is not certain if this represents a distinct species. The lichen was first scientifically described by Italian naturalist Giovanni Antonio Scopoli in 1772, as a member of the eponymous genus ''Lichen''. It had been shuffled to several genera in its ta ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Monophyletic
In biological cladistics for the classification of organisms, monophyly is the condition of a taxonomic grouping being a clade – that is, a grouping of organisms which meets these criteria: # the grouping contains its own most recent common ancestor (or more precisely an ancestral population), i.e. excludes non-descendants of that common ancestor # the grouping contains all the descendants of that common ancestor, without exception Monophyly is contrasted with paraphyly and polyphyly as shown in the second diagram. A ''paraphyletic'' grouping meets 1. but not 2., thus consisting of the descendants of a common ancestor, excepting one or more monophyletic subgroups. A '' polyphyletic'' grouping meets neither criterion, and instead serves to characterize convergent relationships of biological features rather than genetic relationships – for example, night-active primates, fruit trees, or aquatic insects. As such, these characteristic features of a polyphyletic grouping ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
