Crisp Pondweed

Potamogeton crispus, also known as curly pondweed or curled pondweed, is an aquatic plant found in various regions including Alberta, British Columbia, Ontario, Prince Edward Island, Quebec, and Saskatchewan in Canada, as well as in parts of Europe, Africa, Asia, and the Americas. It was first described in 1753 by Linnaeus, with the specific epithet spelled 'crispum' in the original publication. This species is native to Eurasia but has been introduced to North America, where it is often considered an invasive species.