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Crustose lichens are lichens that form a crust which strongly adheres to the substrate (soil, rock, tree bark, etc.), making separation from the substrate impossible without destruction. [1] The basic structure of crustose lichens consists of a cortex layer, an algal layer, and a medulla.
Tylophoron is a genus of crustose lichens that typically appear as thin, often powdery or slightly felt-like patches spread across their substrate.Although the thallus (lichen body) does not have a distinct outer skin (cortex), it may be coated with tiny crystals.
Chicitaea species are crustose lichens, meaning they grow as a tight crust that adheres closely to their substrate, typically tree bark. The thallus (main body of the lichen) can range from thin to thick and appears in shades from pale grey-green to olive-grey, with a surface that varies from smooth to warty or bumpy. These lichens reproduce in ...
Arthonia radiata is a crustose lichen with an immersed thallus, often separated from its surroundings by a thin brown line.The thallus is typically pale, ranging from white to pale grey, sometimes with a brown or olive tinge, and often forms a mosaic-like pattern on its substrate.
They exhibit a variety of growth forms: lobate, somewhat fruticose, or crustose. [6] The thalli of some species feature pseudocyphellae, which are small pores in the upper cortex that appear as slightly paler spots on the surface. Apothecia (fruiting bodies) in Gondwania are typically lecanorine to zeorine in form, ranging from 0.5 to 6 mm in ...
A lichen (/ ˈ l aɪ k ən / LIE-kən, UK also / ˈ l ɪ tʃ ən / LI-chən) is a hybrid colony of algae or cyanobacteria living symbiotically among filaments of multiple fungi species, along with yeasts and bacteria [1] [2] embedded in the cortex or "skin", in a mutualistic relationship.
Buellia frigida is a species of saxicolous (rock-dwelling), crustose lichen in the family Caliciaceae. It was first described from samples collected from the British National Antarctic Expedition of 1901–1904. It is endemic to maritime and continental Antarctica, where it is common and widespread, at altitudes up to about 2,000 m (6,600 ft).
6 Taxonomy. 7 References. ... Phlyctis argena is a species of crustose lichen. [1] ... The lichen is a generalist epiphyte of deciduous trees and is acidophilic.