For Lichen we have terms and definitions in 5 topics. The topics are Ecology, Gardening, Lichens, Microbiology and Physical Geography.

Lichen (Ecology)

A combination of two organisms, a fungus and an algae. The two organisms must grow together. Lichens are usually crusty growths seen on tree trunks or rocks.

Lichen (Gardening)

A combined growing condition of algae and fungus. It looks crusty, and comes in many colors: gray, green, bluish, or browns.

Lichen (Lichens)

An obligate mutualistic association between a fungus and a photosynthetic partner (either green algae, cyanobacteria, or both).

Lichen (Microbiology)

A fungus and an alga (or a cyanobacterium) living in symbiotic association.

Lichen (Physical Geography)

Organism that consists of a symbiotic joining of a species of fungi and a species of algae.

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