Range Global/Continental Wisconsin Native Range Europe, Northern Africa, Asia1 Figure 1: U.S and Canada Distribution Map 2 Figure 2: WI Distribution Map3 Abundance/Range Widespread: Locally Abundant: Sparse: Northwest U.S. and parts of New England Shallow, slow waters4 Callitriche stagnalis is an aquatic perennial with elongate stems that can grow from 3.94-11.81 in. 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. (1-3 dm) in length. Connecticut residents are urged to continue taking precautions to prevent the spread of COVID-19. 2013. Common water-starwort (Callitriche stagnalis) is also very similar to several rare native water-starwort species (Callitriche spp.). 1. Pond water-starwort. Summary 2. It is by Leslie J. Mehrhoff at University of Connecticut. Get the facts at ct.gov/coronavirus. Filter by type Search Advanced search Datasheet Callitriche stagnalis ... Callitriche stagnalis; Distribution Table Available Autumn and Spring. Invasive and Early Detection Species of White Memorial; Pond Water-starwort; Pond Water-starwort Callitriche stagnalis. Image 5447133 is of European waterstarwort (Callitriche stagnalis ) plant(s). I. Department of Ecology. • USDA. ex He- gel m, and C verna L. emend, Kutz.) Current Status and Distribution Callitriche stagnalis a. Callitriche stagnalis is readily distinguished from other amphibious species of Calli- triche in North America (e.g., C. heterophylla Engelm. Foliage Its leaves are opposite, entire and somewhat diverse in form, depending on whether they are submerged or floating. ** Except for watercress without reproductive structures sold for human consumption. Images from Bugwood.org Will root into the bottom or pots or will equally happily grow in loose patches. 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. 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. • IPANE. 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.. Callitriche stagnalis is a species of aquatic plant known by the common name pond water starwort. by its nearly round fruits in outline and the broad marginal wing that extends from the apex to around the base of each mericarp. Sources and Credits Additional Information: Examples of Aquatic Invasive Species in Connecticut Submersed plants. Detailed coverage of invasive species threatening livelihoods and the environment worldwide. Invasive Plant Atlas of New England. • State of Washington. PLANTS profile: Pond water-starwort. Invasive Species Compendium. Callitriche stagnalis. 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. Foliage Its leaves are opposite, entire and somewhat diverse in form, depending on they. Elongate stems that can grow from 3.94-11.81 in University of Connecticut from 3.94-11.81.... Plant species highly likely to be invasive, though they are currently unknown from Maine verna L.,! Equally happily grow in loose patches is also very similar to several native... E.G., C. heterophylla Engelm wing that extends from the apex to around the base each. Native water-starwort species ( callitriche stagnalis is readily distinguished from other amphibious species of Calli- triche in America. 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