Herbarium specimen: Ceratophyllum demersum
| Taxon: | Ceratophyllaceae: Ceratophyllum demersum L. ("Rigid Hornwort") named by Nicholas F Stewart 7/7/1981 |
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| Collection date: | 21/8/1884 |
| Locality: | Great Britain, VC88 Mid Perthshire, Pond of Drummond, NN8518 |
| Institution: | Perth Museum and Art Gallery (PTH) |
| Accession number: | PTH.1999.420.624 |
