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 structure is exceedingly delicate, the peridium between the ribs and reticulations reduced to the last degree of tenuity, with the iridescence of the soap-bubble, here and there lapsed entirely.

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)

E. CRIBRARIACE� Sporangia distinct, more or less closely gregarious, stipitate, the peridium opening, especially above, by a well-defined network formed from thickenings in the original sporangial wall.

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 persistent warts which cover the surface of the peridium are so minute as to appear to the naked eye like scales.

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

The fruit-bodies are of very various shapes, showing a differentiation into an outer peridium and an inner spore-bearing mass, the gleba.

From Encyclopaedia Britannica, 11th Edition, Volume 11, Slice 3 "Frost" to "Fyzabad" by Various

The hyph� are thicker than the spores and branched, continuous with the slightly cellular base, and forming a columella inside the peridium.

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