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Lobothallia Platycarpa
''Lobothallia'' is a genus of lichen-forming fungi in the family Megasporaceae. Dark brown to black apothecia may be sunken into the surface of the thallus, as indicated in the common name puffed sunken-disk lichen. Originally described as a subgenus of ''Aspicilia'' in 1984, ''Lobothallia'' was elevated to full genus status in 1991 based on distinctive features including peripheral and small, thin-walled ascospores. The genus was established to clarify a group of rock-dwelling lichens that had previously been classified across several different genera. The genus is found across multiple continents including Eurasia, North America, and Australia, with the greatest diversity occurring in the semi-arid mountains of Central Asia. These lichens typically grow on exposed rock faces, from low-elevation steppes to high mountain areas above 2,600 meters, and are well-adapted to dry conditions. As of 2025, the genus includes 28 recognized species, with several new species recently di ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Morphology (biology)
Morphology (from Ancient Greek μορφή (morphḗ) "form", and λόγος (lógos) "word, study, research") is the study of the form and structure of organisms and their specific structural features. This includes aspects of the outward appearance (shape, structure, color, pattern, size), as well as the form and structure of internal parts like bones and organs, i.e., anatomy. This is in contrast to physiology, which deals primarily with function. Morphology is a branch of life science dealing with the study of the overall structure of an organism or taxon and its component parts. History The etymology of the word "morphology" is from the Ancient Greek (), meaning "form", and (), meaning "word, study, research". While the concept of form in biology, opposed to function, dates back to Aristotle (see Aristotle's biology), the field of morphology was developed by Johann Wolfgang von Goethe (1790) and independently by the German anatomist and physiologist Karl Fried ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Foliose Lichen
A foliose lichen is a lichen with flat, leaf-like , which are generally not firmly bonded to the substrate on which it grows. It is one of the three most common growth forms of lichens. It typically has distinct upper and lower surfaces, each of which is usually covered with a cortex; some, however, lack a lower cortex. The photobiont layer lies just below the upper cortex. Where present, the lower cortex is usually dark (sometimes even black), but occasionally white. Foliose lichens are attached to their substrate either by hyphae extending from the cortex or , or by root-like structures called . The latter, which are found only in foliose lichens, come in a variety of shapes, the specifics of which can aid in species identification. Some foliose lichens attach only at a single stout peg called a , typically located near the lichen's centre. Lichens with this structure are called "umbilicate". In general, medium to large epiphytic foliose lichens are moderately sensitive to air ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rosette (botany)
In botany, a rosette is a circular arrangement of leaves or of structures resembling leaves. In flowering plants, rosettes usually sit near the soil, but they can also be at the top of an otherwise naked branch or trunk. Their structure is an example of a Aerial stem modification, modified stem in which the internode (botany), internode gaps between the leaves do not expand, so that all the leaves remain clustered tightly together and at a similar height. Some insects induce the development of Gall, galls that are leafy rosettes. In bryophytes and algae, a rosette results from the repeated branching of the thallus as the plant grows, resulting in a circular outline. Taxonomies Many plant family (taxonomy), families have varieties with rosette Morphology (biology), morphology; they are particularly common in Asteraceae (such as dandelions), Brassicaceae (such as cabbage), and Bromeliaceae. The fern ''Blechnum fluviatile'' or New Zealand Water Fern (''kiwikiwi'') is a rosette plan ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lobothallia Radiosa (Hoffm
''Lobothallia'' is a genus of lichen-forming fungi in the family Megasporaceae. Dark brown to black apothecia may be sunken into the surface of the thallus, as indicated in the common name puffed sunken-disk lichen. Originally described as a subgenus of ''Aspicilia'' in 1984, ''Lobothallia'' was elevated to full genus status in 1991 based on distinctive features including peripheral and small, thin-walled ascospores. The genus was established to clarify a group of rock-dwelling lichens that had previously been classified across several different genera. The genus is found across multiple continents including Eurasia, North America, and Australia, with the greatest diversity occurring in the semi-arid mountains of Central Asia. These lichens typically grow on exposed rock faces, from low-elevation steppes to high mountain areas above 2,600 meters, and are well-adapted to dry conditions. As of 2025, the genus includes 28 recognized species, with several new species recently di ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lecanora
''Lecanora'' is a genus of lichen commonly called rim lichens.Field Guide to California Lichens, Stephen Sharnoff, Yale University Press, 2014, Lichens in the genus '' Squamarina'' are also called rim lichens. Members of the genus have roughly circular fruiting discs (apothecia) with rims that have photosynthetic tissue similar to that of the nonfruiting part of the lichen body ( thallus). Other lichens with apothecia having margins made of thallus-like tissue are called lecanorine. It is in the family Lecanoraceae in the suborder Lecanorineae. Description ''Lecanora'' has a crustose thallus, photobiont, colourless ascospores and crystals in the amphothecium. Swiss lichenologist Rosmarie Honegger used electron microscopy in the late 1970s to investigate ascus structure in several major groups of lichen-forming fungi. She defined the ''Lecanora''-type ascus as one characterized by several distinctive features: (1) a non- amyloid, clear ascus wall that is encased in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Circinaria
''Circinaria'' is a genus of lichen-forming fungi in the family Megasporaceae. It was circumscribed by Johann Heinrich Friedrich Link in 1809. Species , Species Fungorum ''Index Fungorum'' is an international project to index all formal names (Binomial nomenclature, scientific names) in the fungus Kingdom (biology), kingdom. As of 2015, the project is based at the Royal Botanic Gardens, Kew, one of three partn ... accepts 37 species of ''Circinaria''. *'' Circinaria affinis'' *'' Circinaria arida'' *'' Circinaria caesiocinerea'' *'' Circinaria calcarea'' *'' Circinaria cerebroides'' *'' Circinaria contorta'' *'' Circinaria crespiana'' *'' Circinaria cupreogrisea'' *'' Circinaria deminuta'' – Australia *'' Circinaria digitata'' *'' Circinaria elmorei'' *'' Circinaria emiliae'' *'' Circinaria esculenta'' *'' Circinaria fruticulosa'' *'' Circinaria gibbosa'' *'' Circinaria hispida'' *'' Circinaria jussuffii'' *'' Circinaria lacunosa'' *'' Circinaria laxiloba ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
