The outer protective rim or border of a lichen, especially the part that holds the reproductive structures together.
From Latin 'excipere' (to receive, contain), referring to the tissue that 'receives' or contains the reproductive material in lichens.
Lichens are fantastic organisms that combine fungus and algae, and the exciple is like the fungus's protective fortress wall that keeps the algae safe inside—it's a partnership that's been happening for over 400 million years!
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