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Dirina Mexicana
''Dirina mexicana'' is a species of saxicolous lichen, saxicolous (rock-dwelling), crustose lichen in the family Roccellaceae. First identified in Mexico, it displays distinctive characteristics which set it apart from other species within the same genus. The lichen is unique for its varied hues and certain chemical characteristics that are seen in its thallus, or vegetative tissue. Typically growing on vertical or Overhang (rock formation), overhanging rocks and cliffs, ''Dirina mexicana'' can be found in specific regions across Mexico. Taxonomy The species was species description, formally described by Swedish lichenologist in 1995. It is included within the genus ''Dirina'' and shares some common characteristics with other species in the genus, such as ''Dirina insulana, D. insulana'', ''Dirina immersa, D. immersa'', and ''Dirina cretacea, D. cretacea''. However, it stands out due to its unique colouration and chemical composition. The type (biology), type sp ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Saxicolous Lichen
A saxicolous lichen is a lichen that grows on rock. The prefix "sax" from the Latin means "rock" or "stone". Characteristics Saxicolous lichens exhibit very slow growth rates. They may develop on rock substrates for long periods of time, given the absence of external disturbances. The importance of the mineral composition of the rock substrate, as well as the elemental geochemistry Geochemistry is the science that uses the tools and principles of chemistry to explain the mechanisms behind major geological systems such as the Earth's crust and its oceans. The realm of geochemistry extends beyond the Earth, encompassing the e ... is also important to the distribution of saxicolous lichens, but the relationship between the substrate influence on lichens, either chemical or textural, is still obscure. Communities of saxicolous lichens are often species-rich in terms of number. References Lichenology {{lichen-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |