Trentepohlia genus are commonly found in lichens.
A lichen is not a single organism; it is a stable symbiotic association between a fungus and algae and/or cyanobacteria. Like all fungi, lichen fungi require carbon as a food source; this is provided by their symbiotic algae and/or cyanobacteria, that are photosynthetic. Lichen photobionts are the green algae or cyanobacteria that provide the simple sugars to their fungal partners. 90% of all lichens associate with a green-algal photobiont. About 100 species of photobionts are known, and the commonest ones are from four main groups. These are very important in evolution. A lichen is made up of fungus cells for support and algae cells which fix carbon via photosynth … esis. The algae and fungi species that make up a give lichen species are only found as lichen, they don't live on their own. This is a very tight symbiosis. An even tighter one can be seen in every eukaryotic cell. A lichen is a composite organism that arises from algae or cyanobacteria (or both) living among filaments of a fungus in a symbiotic relationship. The combined life form has properties that are very different from the properties of its component organisms. Lichens come in many colors, sizes, and forms. The lichen combination of fungus with algae and/or cyanobacteria has a very different form (morphology), physiology, and biochemistry to the component parts growing by themselves. Lichen. Lichen is a structure that commonly grows on trees; it is a result of a symbiotic relationship between algae and fungi. The fungus provides a structure that collects water and nutrients that the algae takes advantage of; the algae in turn uses its chlorophyll to produce food for both itself and the fungus. Species of the Trentepohlia genus are commonly found in lichens. An interesting fact about lichens is that the algae species in one lichen can usually join with a different fungus and make another lichen. It doesn't work the opposite way, however; a fungus is only able to make a lichen with one type of algae. Einar Tindal. Common Greenshield is one of our most common lichens. A lichen is special, because it is not one organism, but two. A lichen is a complicated relationship between a fungus and an algae. A lichen is created when the fungus and algae join together to form a new organism. The lichen looks different than the way the fungus or algae looks by itself. The lichen can also reproduce itself and looks like a plant 20% (one in five) of fungal species live in lichens. Lichen fungi belong to several different groups of fungi. Most common (over 40%) are Ascomycetes, which produce spores in a sac-shaped container, the ascus. Only a few types of alga occur within lichens; these algae also have their own names.  Lichens are stable, self-supporting associations between fungi and photobionts. The fungi are most commonly Ascomycota. A few Holobasidiomycetes are known to form the association. The photobionts are either algae or cyanobacteria. The algae may be single celled or, rarely, filamentous. In most cases, neither partner is found living alone in the wild LINK. The fungus most commonly forms the majority of the biomass of the lichen. Lichens are common primary colonisers of stressful habitats. The fungus benefits from the symbiotic relation because algae or cyanobacteria produce food by photosynthesis. The algae or cyanobacteria benefit by being protected from the environment by the filaments of the fungus, which also gather moisture and nutrients from the environment, and (usually) provide an anchor to it. The lichen combination of fungus with algae and/or cyanobacteria has a very different form (morphology), physiology, and biochemistry to the component parts growing by themselves.
http://www.britishlichensociety.org.uk/about-lichens/what-is-a-lichen http://www.answers.com/Q/What_type_of_algae_are_commonly_found_in_lichens https://en.wikipedia.org/wiki/Lichen http://homeguides.sfgate.com/type-algae-can-grow-trees-59039.html http://www.fcps.edu/islandcreekes/ecology/common_greenshield.htm https://simple.wikipedia.org/wiki/Lichen http://bugs.bio.usyd.edu.au/learning/resources/Mycology/Plant_Interactions/Lichen/lichenBiology.shtml https://en.wikipedia.org/wiki/Lichen
what type of algae are commonly found in lichens