Arrow-head Sagittaria sagittifolia 759 |
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River Roding, Wanstead Park, 3 August 2009 |
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The first known record of Arrow-head was in the Roding, Wanstead Park, in 1941 by G. Lister. It was recorded again in 1976, but not since then until 2009, where it appeared to be in the same location. |