peridium

American  

[puh-rid-ee-uhm] / pəˈrɪd i əm /

noun

Mycology.

plural

peridea

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

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peridium British  

/ pəˈrɪdɪəm /

noun

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

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Other Word Forms

• peridial adjective
• peridiiform adjective

Etymology

Origin of peridium

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

Example Sentences

The plasmodium is pale pink, soon becomes buff when exposed in fruiting, finally pallid or somewhat livid, and is outwardly changed into the stout, tough peridium.

From The North American Slime-Moulds A Descriptive List of All Species of Myxomycetes Hitherto Reported from the Continent of North America, with Notes on Some Extra-Limital Species by MacBride, Thomas H. (Thomas Huston)

The capillitium and fragment of the peridium of the same species, � 380.

From The North American Slime-Moulds A Descriptive List of All Species of Myxomycetes Hitherto Reported from the Continent of North America, with Notes on Some Extra-Limital Species by MacBride, Thomas H. (Thomas Huston)

Hypothallus none; peridium checkered with pale reticulations.         i.

From The North American Slime-Moulds A Descriptive List of All Species of Myxomycetes Hitherto Reported from the Continent of North America, with Notes on Some Extra-Limital Species by MacBride, Thomas H. (Thomas Huston)

Schrader redefined the genus; opposed Persoon's view as to the capillitial nature of the net, and separated the genus Dictydium, but by imperfect limitations,—in fact, chiefly because of the more completely evanescent peridium.

From The North American Slime-Moulds A Descriptive List of All Species of Myxomycetes Hitherto Reported from the Continent of North America, with Notes on Some Extra-Limital Species by MacBride, Thomas H. (Thomas Huston)

The peridium is very fragile above, cracking into are� in the mature plant and breaking up and falling away in fragments, thus allowing the dispersion of the spores.

From Student's Hand-book of Mushrooms of America, Edible and Poisonous by Taylor, Thomas