The shape of a lichen is usually determined by the organization of the fungal filaments. [36] The nonreproductive tissues, or vegetative body parts, are called the thallus. Lichens are grouped by …

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 …

Feb 11, 2023 · A lichen is a symbiotic relationship between a fungus and a photosynthetic partner (algae, cyanobacteria, or both). Lichens grow all over the world and can even survive exposure to …

Nov 20, 2024 · Lichen planus (LIE-kun PLAY-nus) is a condition of the skin, hair, nails, mouth and genitals. On skin, lichen planus often appears as purple, itchy, flat bumps that develop over several …

The dominant partner is the fungus, which gives the lichen the majority of its characteristics, from its thallus shape to its fruiting bodies. The alga can be either a green alga or a blue-green alga, …

Lichen planus is a chronic inflammatory skin condition affecting the skin and mucosal surfaces. Cutaneous lichen planus tends to clear within a couple of years in most people.

May 22, 2025 · Some lichen contains aromatic substances in their thallus and are used to produce various cosmetics. Cetraria islandica contain carbohydrates in the form of lichenin.

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 …

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 …

May 2, 2022 · Lichen planus and lichen sclerosus are both idiopathic conditions that affect your skin, especially mucus membranes. Lichen sclerosus is a long-term skin condition that causes your skin to …