<Li> Tamarix usneoides E. Mey . ex Bunge </Li> <Ul> <Li> Myricaria germanica (L .) Desv . (as T. germanica L .) </Li> </Ul> <Li> Myricaria germanica (L .) Desv . (as T. germanica L .) </Li> <P> The tamarisk was introduced to the United States as an ornamental shrub, a windbreak, and a shade tree in the early 19th century . In the 1930s, during the Great Depression, tree - planting was used as a tool to fight soil erosion on the Great Plains, and the trees were planted by the millions in the Great Plains Shelterbelt . </P>

Why do root tips grow away from salt