1. NHD24/74 Reference (shelfmark): NHD24/74 Title: Pondweed Scope & Content: Pondweed Family Potamogetonaceae, ‘Potamogeton perfoliatus’ L. Original inscriptions: ‘Potomogeton perfoliatum B.’ Further inscriptions: Artist: Medium: Watercolour Size: Note: Collection Area: Visual Arts Languages: Not applicable Date Range: 1798-1805 Extent: 1 Item