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Clavascidium
''Clavascidium'' is a genus of lichens in the family Verrucariaceae. The genus was circumscribed in 1996 by Austrian lichenologist Othmar Breuss. Because the type species of the genus, ''Clavascidium umbrinum'', has been shown using molecular phylogenetics to belong to genus ''Placidium'', Cécile Gueidan Cécile Gueidan is a mycologist and lichenologist who applies morphological and molecular biological methods to the origin and taxonomy of fungi that live in lichen symbioses and within rocks. Early life and education Gueidan began working o ... and colleagues proposed to unite ''Clavascidium'' with ''Placidium'' in a 2009 publication. Despite this, the genus has been retained in recent publications of fungal classification. Species *'' Clavascidium antillarum'' *'' Clavascidium imitans'' *'' Clavascidium kisovense'' *'' Clavascidium krylovianum'' *'' Clavascidium lacinulatum'' *'' Clavascidium pseudorufescens'' *'' Clavascidium semaforonense'' *'' Clavascidium s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Clavascidium Sinense
''Clavascidium sinense'' is a species of squamulose (scaley), ground-dwelling lichen in the family Verrucariaceae. Found in Northwest China, it was formally described as a new species in 2022 by Tingting Zhang and Xinli Wei. The type specimen was collected in Datong City (Yanggao County, Shanxi) at an altitude of . The species epithet ''sinense'' refers to its Chinese distribution. Characteristics of ''Clavascidium sinense'' include the presence of both uniseriate (lined up in a single row) and biseriate (lined up in two rows) ascospores in the asci, pycnidia that are superficial on the surface of the squamules (''laminal''), and mixed-type medulla (with both rounded and elongated cells). The lichen does not react with any of the standard chemical spot tests, and no lichen products were detected using thin-layer chromatography Thin-layer chromatography (TLC) is a chromatography technique used to separate non-volatile mixtures. Thin-layer chromatography is performed on a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Clavascidium Lacinulatum
''Clavascidium lacinulatum'' is a dark brown squamulous terricolous lichen.Lichen Flora of the Greater Sonoran Desert Region. Vol 1, Nash, T.H., Ryan, B.D., Gries, C., Bugartz, F., (eds.), 2001/ref>Field Guide to California Lichens, Stephen Sharnoff, Yale University Press, 2014, In Joshua Tree National Park, it is the most common of the biological soil crust Biological soil crusts are communities of living organisms on the soil surface in arid and semi-arid ecosystems. They are found throughout the world with varying species composition and cover depending on topography, soil characteristics, climate, ... lichens. References Lichen species Verrucariales Taxa named by Erik Acharius Lichens described in 1810 {{Eurotiomycetes-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Placidium Umbrinum
''Placidium'' is a genus of crustose to squamulose to almost foliose lichens. The genus is in the family Verrucariaceae. Most members grow on soil (are terricolous), but some grow on rock (saxicolous). The fruiting bodies are perithecia, flask-like structures immersed in the lichen body (thallus) with only the top opening visible, dotting the thallus. Lichen spot tests are all negative. Members of the genus lack rhizines, but otherwise resemble members of the genus ''Clavascidium''. Members of the genus are commonly called stiplescale lichens or earthscale.Field Guide to California Lichens, Stephen Sharnoff, Yale University Press, 2014, Taxonomy The genus was circumscribed in 1855 by Italian lichenologist Abramo Bartolommeo Massalongo. María Prieto and Ibai Olariaga suggest that ''Placidium'' is a superfluous illegitimate name according to strict application of nomenclatural rules. This is because when Massalongo circumscribed the genus in 1855, he included the original ty ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Verrucariaceae
The Verrucariaceae are a family of mostly lichenised fungi in the order Verrucariales. The lichen-forming species, which comprise the vast majority of the family, have a wide variety of thallus forms, and include crustose (crust-like), foliose (bushy), and squamulose (scaly) representatives. Several characteristics of the spore-bearing structures, the ascomata, define the family, including their perithecioid form–more or less spherical or flask-shaped, with a single opening and otherwise completely enclosed by a wall. Squamulose members of the Verrucariaceae with simple ascospores (lacking partitions called septa), and without algae in the spore-bearing region are known as lichens; there are more than 80 of these species. The family has several dozen lichenicolous (lichen-dwelling) examples, including a few genera that contain solely lichenicolous members. An unusually diverse variety of photobiont partners have been recorded, mostly green algae, but also brown algae and yel ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Placidium
''Placidium'' is a genus of crustose to squamulose to almost foliose lichens. The genus is in the family Verrucariaceae. Most members grow on soil (are terricolous), but some grow on rock ( saxicolous). The fruiting bodies are perithecia, flask-like structures immersed in the lichen body (thallus) with only the top opening visible, dotting the thallus. Lichen spot tests are all negative. Members of the genus lack rhizines, but otherwise resemble members of the genus ''Clavascidium''. Members of the genus are commonly called stiplescale lichens or earthscale.Field Guide to California Lichens, Stephen Sharnoff, Yale University Press, 2014, Taxonomy The genus was circumscribed in 1855 by Italian lichenologist Abramo Bartolommeo Massalongo. María Prieto and Ibai Olariaga suggest that ''Placidium'' is a superfluous illegitimate name according to strict application of nomenclatural rules. This is because when Massalongo circumscribed the genus in 1855, he included the original ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
International Code Of Nomenclature For Algae, Fungi, And Plants
The ''International Code of Nomenclature for algae, fungi, and plants'' (ICN) is the set of rules and recommendations dealing with the formal botanical names that are given to plants, fungi and a few other groups of organisms, all those "traditionally treated as algae, fungi, or plants".. It was formerly called the ''International Code of Botanical Nomenclature'' (ICBN); the name was changed at the International Botanical Congress in Melbourne in July 2011 as part of the ''Melbourne Code''. which replaced the ''Vienna Code'' of 2005. The current version of the code is the ''Shenzhen Code'' adopted by the International Botanical Congress held in Shenzhen, China, in July 2017. As with previous codes, it took effect as soon as it was ratified by the congress (on 29 July 2017), but the documentation of the code in its final form was not published until 26 June 2018. The name of the ''Code'' is partly capitalized and partly not. The lower-case for "algae, fungi, and plants" indi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
