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Atlas Of Ferns Of The British Isles

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66 ASPLENIACEAE<br />

0<br />

7<br />

6<br />

5<br />

0<br />

8<br />

21.11<br />

ASPLENIUM<br />

CETERACH<br />

Rustyback<br />

Kdonieres<br />

5<br />

Miles<br />

9<br />

CHANNEL ISLANDS<br />

PLOTTED ON 0 wv<br />

UTM GRID<br />

100<br />

fr<br />

100<br />

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(Ceterach officinarum DC.)<br />

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aft<br />

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A southern sub-Atlantic species reaching possibly its most<br />

northern locality in v.c. 96 (it is also recorded for Gotland,<br />

Sweden). Although a calcicole the lack of suitable substrate is<br />

only partly responsible for its restricted distribution which is<br />

most likely controlled by a complex of interrelated climatic<br />

factors.<br />

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