Search results
Results from the WOW.Com Content Network
The thallus of a crustose lichen is usually only discernible because of the discolouration of the substrate. Some crustose lichens have thalli consisting of scattered or loosely grouped granules. Crustose lichens differ from the leprose lichen by having an upper cortex and algal cells that are located directly beneath the cortex. The thallus of ...
Diorygma isidiolichexanthonicum is a species of corticolous (bark-dwelling), crustose lichen in the family Graphidaceae. [2] It is found in the Atlantic Forest of Brazil. Taxonomy
[23] [24] Crustose lichens lack a lower cortex, though most have an upper cortex. The photobiont layer lies just below the upper cortex. [25] Many crustose lichens have a ring of unlichenised fungal hyphae at their edges. This fringe, known as a prothallus, may be black, white or the same colour as the rest of the thallus. [26]
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.
Porpidia macrocarpa is a crustose lichen with a variable thallus, typically appearing immersed (embedded in the substrate) to thin and continuous, but it can sometimes be thicker and become cracked (rimose) or divided into small sections (areolate).
At that time, the growth form of the lichen thalli was often used in classical lichen taxonomy to segregate groups of species into families, [7] and so in a subsequent (1926) publication, Zahlbruckner introduced the family Caloplacaceae to contain crustose lichens with polarilocular ascospores; this family included the genera Caloplaca ...
Ramboldia blochiana is a species of corticolous (bark-dwelling), crustose lichen in the family Ramboldiaceae. [1] The species is characterized by a sorediate thallus and shares chemical and morphological characteristics with the widespread Ramboldia russula, but it also possesses distinct chemical components and a unique geographical distribution.