Pond water-starwort. Detailed coverage of invasive species threatening livelihoods and the environment worldwide. Get the facts at ct.gov/coronavirus. (1-3 dm) in length. Callitriche stagnalis is widespread also throughout the rest of Britain and Ireland and occurs as a native plant in most parts of mainland Europe and in northern Africa. In North America Common Starwort is an introduced species, first discovered in the New York area in 1861, and is now a nuisance invasive weed in parts of the USA and Canada.. • IPANE. Invasive Plant Atlas of New England. Callitriche stagnalis is a species of aquatic plant known by the common name pond water starwort. Callitriche stagnalis is an aquatic perennial with elongate stems that can grow from 3.94-11.81 in. Common water-starwort (Callitriche stagnalis) is also very similar to several rare native water-starwort species (Callitriche spp.). ** Except for watercress without reproductive structures sold for human consumption. Submersed plants. pond water-starwort (Callitriche stagnalis) yellow floating heart (Nymphoides peltata) watercress (Rorippa nasturium-aquaticum)** * Except for eradication, education or research purposes. Plant species highly likely to be invasive, though they are currently unknown from Maine. Callitriche stagnalis is readily distinguished from other amphibious species of Calli- triche in North America (e.g., C. heterophylla Engelm. ex He- gel m, and C verna L. emend, Kutz.) • USDA. Images from Bugwood.org It is by Leslie J. Mehrhoff at University of Connecticut. Invasive and Early Detection Species of White Memorial; Pond Water-starwort; Pond Water-starwort Callitriche stagnalis. Invasive Species Compendium. Connecticut residents are urged to continue taking precautions to prevent the spread of COVID-19. 2013. Foliage Its leaves are opposite, entire and somewhat diverse in form, depending on whether they are submerged or floating. PLANTS profile: Pond water-starwort. Callitriche stagnalis. Available Autumn and Spring. Callitriche stagnalis Starwort Cardamine impatiens Cuckoo flower Centaurea maculosa Spotted knapweed Cirsium arvense Canada thistle ... Maine Natural Areas Program List of Invasive Plants Species of Maine Section 3. by its nearly round fruits in outline and the broad marginal wing that extends from the apex to around the base of each mericarp. I. Additional Information: Examples of Aquatic Invasive Species in Connecticut Callitriche (Starwort) is a prolific native plant of shallow water and grows most actively in the cooler months, making it very valuable to early spawning amphibians. Department of Ecology. 1. Current Status and Distribution Callitriche stagnalis a. Image 5447133 is of European waterstarwort (Callitriche stagnalis ) plant(s). Sources and Credits • State of Washington. Filter by type Search Advanced search Datasheet Callitriche stagnalis ... 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