|
Acanthothecis Salazinica
''Acanthothecis salazinica'' is a species of script lichen in the family Graphidaceae. Found in Panama, it was described as a new species in 2013 by Pieter van den Boom and Harrie J. Sipman. The type specimen was collected near Paraíso, Panamá Province, close to the botanical garden in the Summit Park. Here it was growing on the bark of a cultivated ''Parmentiera cereifera'' tree. The lichen contains the secondary chemical salazinic acid, for which it is named. '' Acanthothecis subclavulifera'' is quite similar in morphology, but it contains protocetraric acid rather than salazinic acid and it has a different ascospore structure. Another lichen was named ''Acanthothecis salazinica'' in 2013, by Santosh Joshi and Jae-Seoun Hur. However, since the publication date was a few months after van den Boom and Sipman's publication, it is not a validly published name because it is a later homonym and thus illegitimate Legitimacy, in traditional Western common law, is the status of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Script Lichen
A script lichen, or graphid lichen, is a member of a group of lichens which have spore producing structures that look like writing on the lichen body. The structures are elongated and narrow apothecia called lirellae, which look like short scribbles on the thallus. "Graphid" is derived from Greek language, Greek for "writing". An example is ''Graphis mucronata''. References Lichenology Fungus common names {{lichen-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ascospore
An ascus (; ) is the sexual spore-bearing cell produced in ascomycete fungi. Each ascus usually contains eight ascospores (or octad), produced by meiosis followed, in most species, by a mitotic cell division. However, asci in some genera or species can occur in numbers of one (e.g. ''Monosporascus cannonballus''), two, four, or multiples of four. In a few cases, the ascospores can bud off conidia that may fill the asci (e.g. ''Tympanis'') with hundreds of conidia, or the ascospores may fragment, e.g. some ''Cordyceps'', also filling the asci with smaller cells. Ascospores are nonmotile, usually single celled, but not infrequently may be coenocytic (lacking a septum), and in some cases coenocytic in multiple planes. Mitotic divisions within the developing spores populate each resulting cell in septate ascospores with nuclei. The term ocular chamber, or oculus, refers to the epiplasm (the portion of cytoplasm not used in ascospore formation) that is surrounded by the "bourrelet ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lichens Described In 2013
A lichen ( , ) is a composite organism that arises from algae or cyanobacteria living among filaments of multiple fungi species in a mutualistic relationship.Introduction to Lichens – An Alliance between Kingdoms . University of California Museum of Paleontology. Lichens have properties different from those of their component organisms. They come in many colors, sizes, and forms and are sometimes plant-like, but are not s. They may have tiny, leafless branches (); flat leaf-like structures ( |
