Herbarium specimen: Potamogeton perfoliatus
| Taxon: | Potamogeton perfoliatus L. ("Perfoliate Pondweed") named by George Taylor & James Edgar Dandy 1939 |
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| Collected by: | William Barclay |
| Collection date: | 13/9/1915 |
| Locality: | Great Britain, VC88 Mid Perthshire, Dalreoch Bridge, NO0017, near |
| Institution: | Perth Museum and Art Gallery (PTH) |
| Accession number: | PTH.1999.420.8858 |
