A lichen (/ ˈlaɪkən / LY-kən, UK also / ˈlɪtʃən / LITCH-ən) is a hybrid colony of algae or cyanobacteria living symbiotically among filaments of multiple fungus species, along with bacteria [1][2] embedded …

Dec 11, 2025 · Lichen, any of about 15,000 species of plantlike organisms that consist of a symbiotic association of algae (usually green) or cyanobacteria and fungi. They are found worldwide and occur …

Lichens are bizarre organisms and no two are alike. Lichens are a complex life form that is a symbiotic partnership of two separate organisms, a fungus and an alga. The dominant partner is the fungus, …

Feb 11, 2023 · A lichen is a symbiotic partnership between fungi and either algae or cyanobacteria. While you may not notice lichens in the world around you, they make up a significant part of the …

Jul 18, 2025 · Lichen is not a single organism but rather a complex partnership between two or more different organisms living together symbiotically. Primarily, it consists of fungi and algae (or …

The lichen is usually described as having a leaflike (foliose), crusty (crustose), or branching shrub-like (fruticose) form. Lichens often play an important part in the weathering of rocks and include some …

Sep 5, 2025 · The bright-colored splashes on the tree trunks are lichens (pronounced li-kens). Lichens consist of two different organisms – fungi and algae. The two live together in a balanced relationship …

What is a Lichen? 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; …

A lichen is not a single organism, but the result of a partnership (mutualistic symbiosis) between a fungus and an alga or cyanobacteria. Some lichens are formed of three or more partners.

A lichen is a stable mutualistic association between a filamentous fungus (the mycobiont) and one or more photosynthetic partners (the photobiont), which may be green algae or cyanobacteria. Together …