perichaetium

noun peri·chae·ti·um

Definition of perichaetium

plural

perichaetia

\-tēə\
  1. :  an enveloping sheath in a bryophyte; especially :  a cluster of modified leaves surrounding the sex organs or later the seta of mosses

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Origin and Etymology of perichaetium

New Latin, from peri- + Greek chaitē flowing hair, mane, foliage + New Latin -ium


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