peridium

[ puh-rid-ee-uh m ]

/ pəˈrɪd i əm /

the outer enveloping coat of the fruit body in many fungi.

Origin of peridium

1815–25; < New Latin < German pērídion, diminutive of pḗra wallet; see -idium

pe·rid·i·al, adjective pe·rid·i·i·form

[puh-rid-ee-uh-fawrm] /pəˈrɪd i əˌfɔrm/, adjective

The opening of a peridium, when ripe, to discharge the spores.

Among the Mushrooms |Ellen M. Dallas and Caroline A. Burgin
The peridium is round or conical and it dehisces by breaking away at the base.

The Mushroom, Edible and Otherwise |M. E. Hard
The capillitium and fragment of the peridium of the same species, 380.

The North American Slime-Moulds |Thomas H. (Thomas Huston) MacBride
The peridium is round, often slightly depressed above, plicate below, where it is abruptly contracted into a long stem-like base.

The Mushroom, Edible and Otherwise |M. E. Hard

The threads, or capillitium, which bear the spores proceed from the walls of the peridium and form the central columella.

The Mushroom, Edible and Otherwise |M. E. Hard

peridium

/ (pəˈrɪdɪəm) /

the distinct outer layer of the spore-bearing organ in many fungi

C19: from Greek pēridion a little wallet, from pēra leather bag, of obscure origin