The splitting of the inner, sheathing layer of the calyptra on the sporophyte of Polytrichum juniperinum Hedw. leads to asymmetrical expansion and the development of a capsule that is bilaterally ...
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This media is in the public domain (free of copyright restrictions). You can copy, modify, and distribute this work without contacting the Smithsonian. For more information, visit the Smithsonian's ...
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