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top moss
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Urn moss (Physcomitrium turbinatum)
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Urn moss (Physcomitrium turbinatum)
Urn moss (Physcomitrium turbinatum)

top moss

plant
Also known as: Physcomitrium pyriforme, Physcomitrium turbinatum, urn moss
Written by
George Yatskievych
Curator, Missouri Botanical Garden.
George Yatskievych
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Encyclopaedia Britannica's editors oversee subject areas in which they have extensive knowledge, whether from years of experience gained by working on that content or via study for an advanced degree. They write new content and verify and edit content received from contributors.
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Also called:
urn moss
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urn moss
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top moss, (Physcomitrium pyriforme), a common species of urn moss formerly known as P. turbinatum. The common name derives from the top-shaped capsules, which open by a small lid at the tip to release the spores. Physcomitrium is a genus of about 80 species in the family Funariaceae of the subclass Bryidae, division Bryophyta.

George Yatskievych
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