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Caloplaca marina

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description Caloplaca marina Overview

Caloplaca marina is a saxicolous, crustose lichen associated with rocky marine shorelines. Its thallus can appear orange to yellow-orange, and the species is adapted to exposed coastal surfaces that receive salt spray and periodic wetting by seawater. It is of interest to lichen observers studying intertidal and supralittoral habitats, where crustose lichens occupy rock surfaces with limited soil.

help Caloplaca marina FAQ

What color is Caloplaca marina?

Caloplaca marina is known for a striking orange crust-like thallus. That bright color is one of the most useful visual clues when examining it on a coastal rock.

Where does Caloplaca marina grow?

It grows on rocks along the coast, including sites periodically exposed to saltwater. Its habitat is therefore shaped by tides, spray, drying, and repeated wetting.

Can Caloplaca marina survive seawater submersion?

It is adapted to periodic saltwater submersion, unlike many inland lichens. The species occupies a difficult coastal zone where exposure alternates between marine water and air.

Is Caloplaca marina a leafy or crustose lichen?

It is a crustose lichen, meaning the thallus forms a close-fitting crust on the rock surface. Its orange growth should not be confused with a leafy foliose lichen that can be lifted from its substrate.

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