Asplenium ceterach   Rustyback C DD N

Asplenium ceterach Asplenium ceterach under

There were beautiful examples of this fern to be seen growing from cracks and in the grikes of the limestone pavement all over the Burren. The young whitish coloured spores on the backs of the young fronds (LHS) turn red when mature (RHS) giving Asplenium ceterach its English name of Rustyback.

This fern is common all over Ireland and in the south west half of England includng all of Wales. It does occur elsewhere in mainland Britain but in smaller numbers and hardly at all in central and northern Scotland.

The name changed in 2010 (New Flora of the British Isles Third Edition by Clive Stace) from Ceterach officinarum to Asplenium ceterach.

Burren, County Clare, Ireland 21st May 2005

Added on 24th May 2005, updated 28th November 2008, updated 12th March 2010, updated Se3 30th April 2010

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