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Cryptothecia
''Cryptothecia'' is a genus of white to greenish crustose lichens that grow on bark, wood, or leaves. in tropical or subtropical areas worldwide. It has a conspicuous prothallus that develops around its periphery which can be bright red in some species, hence the common name wreath lichen. The main vegetative body (thallus) lacks a cortex (ecorticate and is often immersed in the substrate or byssoid (whispy, like teased wool). The medulla is white, well defined, and often peppered with calcium oxalate crystals. Ascomata are not well defined, being cushions of soft white mycelium immersed in the medullary tissue, hence the name from the Greek ''krypto'' = "to conceal" and ''theke'' = "a container or sheath". There are about 45 described species in the genus according to one source, and 75 species according to another. The genus is in the family Arthoniaceae. It contains '' Trentepohlia'', a green alga, as its photobiont partner. Two species have been described in North America.Br ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cryptothecia Bengalensis
''Cryptothecia'' is a genus of white to greenish crustose lichens that grow on bark, wood, or leaves. in tropical or subtropical areas worldwide. It has a conspicuous prothallus that develops around its periphery which can be bright red in some species, hence the common name wreath lichen. The main vegetative body (thallus) lacks a cortex (ecorticate and is often immersed in the substrate or byssoid (whispy, like teased wool). The medulla is white, well defined, and often peppered with calcium oxalate crystals. Ascomata are not well defined, being cushions of soft white mycelium immersed in the medullary tissue, hence the name from the Greek ''krypto'' = "to conceal" and ''theke'' = "a container or sheath". There are about 45 described species in the genus according to one source, and 75 species according to another. The genus is in the family Arthoniaceae. It contains '' Trentepohlia'', a green alga, as its photobiont partner. Two species have been described in North America.Br ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cryptothecia Rubrocincta
''Cryptothecia rubrocincta'' is a species of lichen in the fungal family Arthoniaceae. The species is distributed in subtropical and tropical locations throughout the southeastern United States, as well as Central and South America, and has been collected infrequently in a few locales in Africa. The body of the lichen forms continuous, circular crust-like patches on dead wood, readily recognizable by the prominent red pigment. The older, central region is covered with red, spherical to cylindrical granules. Moving outwards from the center, zones of color may be distinguished, the first gray-green, the second white, and finally a bright red cottony rim. The red and green colors of this unmistakable woodland lichen give the appearance of a Christmas wreath, suggestive of its common name, common North American name, the Christmas (wreath) lichen. The red pigment, called chiodectonic acid, is one of several chemicals the lichen produces to help tolerate inhospitable growing conditions ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cryptothecia Austrocoreana
''Cryptothecia austrocoreana'' is a species of crustose and corticolous (bark-dwelling) lichen in the family Arthoniaceae. Found in South Korea, it was formally described as a new species in 2017 by Jung-Jae Woo, László Lőkös, Edit Farkas, and Jae-Seoun Hur. The type specimen was collected by the first author near Seonamsa (Suncheon, Jeollanam Province) at an altitude of ; here it was found growing on the bark of '' Meliosma myriantha''. It also grows on the bark of ''Carpinus tschonoskii''. The lichen is only known to occur at the type locality. The specific epithet ''austrocoreana'' refers to the southern part of South Korea. Lichen products found in ''Cryptothecia austrocoreana'' include barbatic acid as a major constituent, minor amounts of atranorin, and trace amounts of chloroatranorin. Only six other species of genus ''Cryptothecia ''Cryptothecia'' is a genus of white to greenish crustose lichens that grow on bark, wood, or leaves. in tropical or subtropical are ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Arthoniaceae
The Arthoniaceae are a family of lichenized, lichenicolous and saprobic fungi in the order Arthoniales. The Arthoniaceae is the largest family of Arthoniales, with around 800 species. Most species in Arthoniaceae belong in '' Arthonia'' which is the largest genus with 500 species. The second and third largest genus is '' Arthothelium'' with 80 species, and ''Cryptothecia'' with 60 species. ''Arthonia'' is the type genus of Arthoniaceae, and it is known to be a polyphyletic and paraphyletic genus. The process of splitting ''Arthonia'' into monophyletic groups is an ongoing process. In order to make ''Arthonia'' monophyletic, several genera have been described or resurrected. Distribution The species in Arthoniaceae have a worldwide distribution, but are especially prevalent in tropical areas with a Mediterranean climate. They are known from arctic to tropical latitudes, as well as variating altitudes from sea level to alpine regions, distributed in both humid forests and dry habit ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
James Stirton
James Stirton (1833, Coupar Angus, Perthshire – 14 January 1917, Glasgow) was a Scottish physician and one of Scotland's leading experts on cryptogamic botany. His investigations in bryology and lichenology earned him a world-wide reputation. Biography Stirton taught mathematics from 1856 to 1858 at the Merchiston Castle School in Edinburgh. At the University of Edinburgh he graduated in 1857 L.R.C.P.Edin and in 1858 M.D.Edin. Soon after acquiring his M.D. he moved to Glasgow and established an extensive practice in obstetrics and gynaecology. In 1876 Stirton was appointed a lecturer in gynaecology at the Glasgow Royal Infirmary, where for many years he had charge of the gynaecological wards. In 1889 he became a professor of midwifery at Anderson’s College Medical School and held the professorship for about fifteen years. Stirton made many visits to the Scottish mountains to investigate lichens and mosses and there discovered numerous species that were previously undescribed ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cortex (botany)
In botany, a cortex is an outer layer of a stem or root in a vascular plant, lying below the epidermis but outside of the vascular bundles. The cortex is composed mostly of large thin-walled parenchyma cells of the ground tissue system and shows little to no structural differentiation. The outer cortical cells often acquire irregularly thickened cell walls, and are called collenchyma cells. Plants Stems and branches In the three dimensional structure of herbaceous stems, the epidermis, cortex and vascular cambium form concentric cylinders around the inner cylindrical core of pith. Some of the outer cortical cells may contain chloroplasts, giving them a green color. They can therefore produce simple carbohydrates through photosynthesis. In woody plants, the cortex is located between the periderm (bark) and the vascular tissue (phloem, in particular). It is responsible for the transportation of materials into the central cylinder of the root through diffusion and may al ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
