description Micarea prasina Overview
Micarea prasina is a small crustose lichen with a pale to dark green thallus made of densely aggregated goniocysts, giving it a granular or algae-like appearance. Its minute apothecia may be whitish, grayish, brownish, or blackish, and the species can also produce immersed pycnidia. It grows on bark, decaying wood, and soil in damp woodland and related habitats. Elias Magnus Fries described the species in 1825, and sterile material can be difficult to separate from non-lichenized green crusts.
help Micarea prasina FAQ
What does Micarea prasina look like?
Micarea prasina is a small crustose lichen with a pale to dark green thallus. Its densely grouped goniocysts give the surface a granular or algae-like appearance.
What are the fruiting bodies of Micarea prasina like?
Its minute apothecia can appear whitish, grayish, brownish, or blackish. The species may also produce immersed pycnidia, which are small structures involved in asexual reproduction.
Is Micarea prasina a leafy lichen?
No. It is a crustose lichen, meaning its thallus grows closely attached to the surface beneath it. Its granular goniocysts can make it look more like a thin green film than a leafy growth.
Why can Micarea prasina be difficult to identify by sight?
It is minute, closely attached to its substrate, and variable in color. The small apothecia and microscopic goniocysts often require close examination rather than a quick field glance.
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