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Polytrichum piliferum | by -- Green Light Images --
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Polytrichum piliferum

The young sporophytes have an elongate spore capsule covered in the calyptra. It's amazing how different the sporophyte generation of this moss will look when the seta elongates and the capsule expands.

 

The range of colours on the calyptra was a surprise to me, and it reminded me of an ice lolly I used to buy as a child, called a Zoom. Anyone remember that?

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Taken on October 25, 2011