User:JGreeneJr/sandbox

Introduction to the US
The earliest record of Callitriche stagnalis in North America comes from New York and New Jersey in 1861. And, it was first found on the West Coast in 1871 in Oregon. Though the exact mechanism of its introduction is unclear, it's existence suggests that it may have been accidentally released through shipping. By the end of the nineteenth century it had became a popular aquarium plant, this is believed to be the reason why the invasion is not only focused on the coasts of the United States and has been able to enter inland states.

Origin
Callitriche stagnalis is native to both Europe and North Africa, where it is widespread in aquatic and subaquatic habitats.

Distribution in the United States
Callitriche stagnalis is found in all of the mid Atlantic states( New York, New Jersey, Pennsylvania, Maryland, Delaware and West Virginia), Virginia, Tennessee, Alabama, Wisconsin, Montana, Washington, Oregon and California. In New England it has been reported in Massachusetts, Connecticut and Maine.

Distribution World Wide
Currently Callitriche stagnalis has been found in Europe, Northern Africa, The United States, Asia, Australia, New Caledonia, and New Zealand.