Sheathed Pondweed (Stuckenia vaginata)
Description
The main difference between Stuckenia and Potamogeton is that the stipule joins the leaf base; when it is pulled the sheath and stipule comes away, similar to a grass sheath and ligule. Stuckenia vaginata is 1-4 metres long and has longer stipule sheaths than e.g. Stuckenia pecinata and Stuckenia filiformis. Similar to them, it has long narrow linear leaves.
Taxonomic tree
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Domain: Eukarya
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Kingdom: Plantae
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Phylum: Magnoliophyta
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Class: Liliopsida
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Order: Alismatales
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Family: Potamogetonaceae
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Genus: Stuckenia
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