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Lempholemma Polycarpum
''Lempholemma polycarpum'' is a little-known species of saxicolous lichen, saxicolous (rock-dwelling) lichen in the family Lichinaceae. It was first described from Yemen and is characterised by its blackish thallus, abundant small apothecia (fruiting bodies), and cyanobacteria from the genus ''Nostoc'' as its . The lichen is found on inclined limestone boulders in sun-exposed habitats with open forest vegetation. It also occurs in Madagascar and in Aldabra. Taxonomy The lichen was first species description, formally described by the German lichenologist Matthias Schultz. The type (biology), type specimen of ''Lempholemma polycarpum'' was collected in Shah-ot, Damkaur, Al Mahrah Governorate, Yemen, on small inclined limestone boulders at an elevation of . The botanical name, species epithet ''polycarpum'' refers to the abundantly produced, small apothecia. Description The thallus of ''Lempholemma polycarpum'' is blackish, dull, and rarely slightly , with a gelatinous texture w ... [...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] |