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Berkeley, M. J. in correspondent 
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From:
Charles Robert Darwin
To:
Miles Joseph Berkeley
Date:
10 July 1875
Source of text:
The National Library of Wales (NLW St Asaph Diocesan Records SA/CR/219)
Summary:

Enquires about fairy rings.

Contributor:
Darwin Correspondence Project
From:
Miles Joseph Berkeley
To:
Charles Robert Darwin
Date:
13 July 1875
Source of text:
DAR 160: 175
Summary:

Fairy-rings grow because the fungal spawn radiates outwards then dies off at the centre as it becomes exhausted. The verdure of the grass depends upon the decay of the fungus supplying nitrogenous manure. Rings are formed mainly in upland pastures poor in nitrogenous matter. Gives examples of woodland fungi that form rings.

Contributor:
Darwin Correspondence Project
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