Chapman Lakes Conservation Association, Inc.--Official Web Site

HYDRILLA (Hydrilla verticillata):  Hydrilla is an exotic and extremely invasive aquatic plant.  Hydrilla typically has 5 leaves whorled around the stem although that number can range from 2 to 8.  Leaves have distinctly serrated edges.  Individual leaves can range from 1 to 2 cm.  If nut-like tubers are found on the roots, the plant is definitely hydrilla.  The other two plants described here do not form tubers.

If hydrilla is discovered, please report immediately to the Aquatic Invasive Species Coordinator at (317)234-3883. (Chapman Lakes contact CLCA's Bill Magurany, 269-5654)

Hydrilla is illegal to possess in Indiana!

(THIS PLANT IS VERY DIFFICULT TO CONTROL AND CAN RAPIDLY TAKE OVER AN ENTIRE LAKE.)

Center for Aquatic and Invasive Plants

   Hydrilla has been found in Lake Manitou at Rochester. A strenuous effort is now underway to eradicate the plant before it invades other lakes by hitchhiking on boats and motors.

BRAZILIAN ELODEA (Egeria densa):  Brazilian elodea is an exotic invasive aquatic plant.  This plant has 3 to 5 leaves per whorl although 4 are most common.  Serrated leaf edges are not visible.  This plant can have leaves up to 4 cm, making it much larger than the other plants described.  Tubers do not form on the roots.

If Brazilian elodea is discovered, please report immediately to the Aquatic Invasive Species Coordinator at (317)234-3883.

ELODEA (Elodea canadensis):  Elodea is a native submersed aquatic plant.  Elodea usually has 2 or 3 leaves per whorl.  Serrated edges of the leaves are not obvious.  Leaves can be up to 1.5 cm although usually they are much smaller.  Tubers are not produced on the roots.

Elodea is a beneficial native plant.  Reports are not necessary if you discover this plant.