Tamarix spp. (salt cedar), an invasive exotic woody plant in arid and semi-arid riparian habitats of western USA.

In the early 1800s plants of the genus Tamarix were introduced to the United States of America as ornamentals. Towards the late 1800s, some of these plants began to invade rivers and streams in the arid and semi-arid ') areas of the south-western United States. Between 1900 and the 1960s the