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Astrothelium Inspersoconicum
''Astrothelium inspersoconicum'' is a species of corticolous (bark-dwelling), crustose lichen in the family Trypetheliaceae. Found in Sri Lanka, it was described as a new species in 2018. Taxonomy The species was officially described by the lichenologists André Aptroot and Gothamie Weerakoon in 2018. The type specimen was collected by the second author in the Runakanda – Maguru Ganga area of Sri Lanka, at an elevation of . The epithet ''inspersoconicum'' reflects the unique combination of an and its association with the ''conicum''-aggregate group within the genus ''Astrothelium'', which is a rare feature in this group. Description ''Astrothelium inspersoconicum'' has a , smooth, and somewhat shiny thallus covering areas up to in diameter, with a pale greenish-grey hue and a distinct brown, glossy prothallus line. Its ascomata (fruiting bodies) are and primarily aggregated, with a wall and eccentric, fused, and conical ostioles covered by an orange . The hamathecium ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
André Aptroot
André Aptroot ( Heemskerk, 1961) is a Dutch mycologist and lichenologist. In 1993 he did his PhD at the University of Utrecht under the supervision of Robbert Gradstein (nl). His dissertation was titled "Systematic studies on pyrenocarpous lichens and related fungi". He specializes in fungi and lichens on which he has several hundreds of publications to his name. He has worked as curator at Centraalbureau voor Schimmelcultures (now Westerdijk Institute). Aptroot is the founder of the Consultancy for Bryology and Lichenology, which is located in Soest where there is a herbarium with a collection of lichens mainly from the Netherlands and the tropics. From 2008 he has been collection manager at Pinetum Blijdenstein (nl) in Hilversum. He is a member of the International Association for Lichenology and the American Bryological and Lichenological Society. He is a visiting professor at the Federal University of Mato Grosso do Sul in Campo Grande, Brazil. Because of Aptro ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Prothallus
A prothallus, or prothallium, (from Latin ''pro'' = forwards and Greek ''θαλλος'' (''thallos'') = twig) is usually the gametophyte stage in the life of a fern or other pteridophyte. Occasionally the term is also used to describe the young gametophyte of a liverwort or peat moss as well. In lichens it refers to the region of the thallus that is free of algae. The prothallus develops from a germinating spore. It is a short-lived and inconspicuous heart-shaped structure typically 2–5 millimeters wide, with a number of rhizoids (root-like hairs) growing underneath, and the sex organs: archegonium (female) and antheridium (male). Appearance varies quite a lot between species. Some are green and conduct photosynthesis while others are colorless and nourish themselves underground as saprotrophs. Alternation of generations Spore-bearing plants, like all plants, go through a life-cycle of alternation of generations. The fully grown sporophyte, what is commonly referred ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lichens Of Asia
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 ( |
Astrothelium Cinnamomeum
''Astrothelium'' is a genus of corticolous (bark-dwelling) lichens in the family Trypetheliaceae. The genus was circumscribed in 1824 by German botanist Franz Gerhard Eschweiler, with ''Astrothelium conicum'' assigned as the type species. Species , Species Fungorum accepts 241 species in ''Astrothelium''. *'' Astrothelium aenascens'' *''Astrothelium aeneoides'' – Brazil *''Astrothelium aeneum'' *''Astrothelium alboverrucoides'' *''Astrothelium alboverrucum'' *''Astrothelium amazonum'' *''Astrothelium ambiguum'' *''Astrothelium amylosporum'' – Bolivia *''Astrothelium andamanicum'' *''Astrothelium annulare'' *''Astrothelium astrolucidum'' – Brazil *''Astrothelium aurantiacocinereum'' *''Astrothelium aurantiacum'' *''Astrothelium auratum'' *''Astrothelium aureomaculatum'' *''Astrothelium basilicum'' *''Astrothelium bicolor'' *''Astrothelium bivelum'' – Brazil *''Astrothelium buckii'' *'' Astrothelium bullatothallinum'' – Venezuela *''Astrothelium bull ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Septum
In biology, a septum (Latin for ''something that encloses''; plural septa) is a wall, dividing a cavity or structure into smaller ones. A cavity or structure divided in this way may be referred to as septate. Examples Human anatomy * Interatrial septum, the wall of tissue that is a sectional part of the left and right atria of the heart * Interventricular septum, the wall separating the left and right ventricles of the heart * Lingual septum, a vertical layer of fibrous tissue that separates the halves of the tongue. * Nasal septum: the cartilage wall separating the nostrils of the nose * Alveolar septum: the thin wall which separates the alveoli from each other in the lungs * Orbital septum, a palpebral ligament in the upper and lower eyelids * Septum pellucidum or septum lucidum, a thin structure separating two fluid pockets in the brain * Uterine septum, a malformation of the uterus * Vaginal septum, a lateral or transverse partition inside the vagina * Interm ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hyaline
A hyaline substance is one with a glassy appearance. The word is derived from el, ὑάλινος, translit=hyálinos, lit=transparent, and el, ὕαλος, translit=hýalos, lit=crystal, glass, label=none. Histopathology Hyaline cartilage is named after its glassy appearance on fresh gross pathology. On light microscopy of H&E stained slides, the extracellular matrix of hyaline cartilage looks homogeneously pink, and the term "hyaline" is used to describe similarly homogeneously pink material besides the cartilage. Hyaline material is usually acellular and proteinaceous. For example, arterial hyaline is seen in aging, high blood pressure, diabetes mellitus Diabetes, also known as diabetes mellitus, is a group of metabolic disorders characterized by a high blood sugar level (hyperglycemia) over a prolonged period of time. Symptoms often include frequent urination, increased thirst and increased ... and in association with some drugs (e.g. calcineurin inhibitors) ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ostiole
An ''ostiole'' is a small hole or opening through which algae or fungi release their mature spores. The word is a diminutive of "ostium", "opening". The term is also used in higher plants, for example to denote the opening of the involuted syconium ( fig inflorescence) through which fig wasps enter to pollinate and breed. Sometimes a stomatal aperture is called an "ostiole"."Synergistic Pectin Degradation and Guard Cell Pressurization Underlie Stomatal Pore Formation", See also *Ostium (other) An ostium (plural ostia) in anatomy is a small opening or orifice. Ostium or ostia may refer to: Human anatomy * Ostium of fallopian tube * Ostium of the uterus (other) * Ostium primum of the developing heart * Ostium secundum ( foramen o ... References Fungal morphology and anatomy Plant anatomy {{botany-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ascomata
An ascocarp, or ascoma (), is the fruiting body ( sporocarp) of an ascomycete phylum fungus. It consists of very tightly interwoven hyphae and millions of embedded asci, each of which typically contains four to eight ascospores. Ascocarps are most commonly bowl-shaped (apothecia) but may take on a spherical or flask-like form that has a pore opening to release spores (perithecia) or no opening (cleistothecia). Classification The ascocarp is classified according to its placement (in ways not fundamental to the basic taxonomy). It is called ''epigeous'' if it grows above ground, as with the morels, while underground ascocarps, such as truffles, are termed ''hypogeous''. The structure enclosing the hymenium is divided into the types described below (apothecium, cleistothecium, etc.) and this character ''is'' important for the taxonomic classification of the fungus. Apothecia can be relatively large and fleshy, whereas the others are microscopic—about the size of flecks ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Thallus
Thallus (plural: thalli), from Latinized Greek (), meaning "a green shoot" or " twig", is the vegetative tissue of some organisms in diverse groups such as algae, fungi, some liverworts, lichens, and the Myxogastria. Many of these organisms were previously known as the thallophytes, a polyphyletic group of distantly related organisms. An organism or structure resembling a thallus is called thalloid, thallodal, thalliform, thalline, or thallose. A thallus usually names the entire body of a multicellular non-moving organism in which there is no organization of the tissues into organs. Even though thalli do not have organized and distinct parts ( leaves, roots, and stems) as do the vascular plants, they may have analogous structures that resemble their vascular "equivalents". The analogous structures have similar function or macroscopic structure, but different microscopic structure; for example, no thallus has vascular tissue. In exceptional cases such as the Lemnoid ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gothamie Weerakoon
Gothamie Weerakoon ( si, ගෝතමී වීරකෝන්) is a Sri Lankan-based botanist, lichenologist and environmentalist. Early life and education After completing her primary education at the Devi Balika Vidyalaya in Colombo, she attended the University of Colombo, completing her PhD in 2013 at the Sri Jayawardenepura University. She emerged as the most active Sri Lankan lichen researcher. Career She has conducted research on South Asian lichens, discovering over 100 new species endemic to Sri Lanka. Some of the species she has discovered include ''Heterodermia queesnberryi'' and ''Polymeridium fernandoi''. In 2015, she wrote ''Fascinating Lichens of Sri Lanka'', which provides facts about lichen species endemic to Sri Lanka. She currently works as the senior curator of Lichens and Slime Moulds at the Natural History Museum of London and also with tea brand, Dilmah. Awards and recognition She is the first South Asian woman scientist to hold the Annual Grante ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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