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Invasive Species Highlight: Variable-Leaf Water Milfoil

2021-01-26T08:57:32-05:00

What is Variable-Leaf (or two-leaf) Water Milfoil? Variable Leaf Water Milfoil (Myriophyllum heterophyllum) is a submerged aquatic invasive plant that looks like some native species including native milfoils. The plant’s feathery leaves are arranged in dense whorls, usually four to six leaves per whorl. Each feathery leaf has seven to READ MORE

Invasive Species Highlight: Hydrilla

2021-01-26T08:57:32-05:00

What is Hydrilla? Hydrilla (Hydrilla verticillata) is a submerged aquatic invasive plant that looks similar to the native American waterweed (Elodea canadensis) and also appears similar to another aquatic  invasive plant, Brazilian elodea (Egeria densa). Hydrilla has visibly serrated leaves that grow in whorls of four to eight, and small READ MORE

Invasive Species Highlight: Brittle Naiad

2021-01-26T08:57:32-05:00

What is Brittle (European or Spiny) Naiad? Brittle Naiad (Najas minor) is a submerged aquatic invasive plant with thin stiff leaves that have serrated edges. The serrations on leaf edges are visible without magnification. Native versions of naiad also have serrated leaves but these are tiny and require magnification to READ MORE

Invasive Species Highlight: Fanwort

2021-01-26T08:57:35-05:00

What is Fanwort? Fanwort (Cabomba caroliniana), is an aquatic invasive plant species found in submersed and floating-leaved plant communities. It has two distinctive leaf types. Fanwort’s submersed leaves are finely divided and fan-like and are attached to the stem of the plant by petioles. The submersed leaves have an opposite READ MORE

Aquatic Invasive Species: Yellow Floating Heart

2021-01-26T08:57:55-05:00

Photo by David Cappaert, Bugwood.org Yellow Floating Heart (Nymphoides peltata) is a perennial non-native invasive aquatic plant that originated in Europe and Asia. The Yellow Floating Heart, which has a bright yellow flower, was introduced to North America as an ornamental plant for backyard ponds. It causes damage to READ MORE