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Wednesday, 11 March 2015

Hard Shield Fern

I found a number of Hard Shield Fern (Polystichum aculeatum
plants today growing around a bridge in Norland Clough.
A glossy evergreen fern which is known in only a few locations in Calderdale.




The fronds are relatively long and narrow and form a fan shape.

The pinnules look like mittens with the thumb pointed upward.



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