Allenrolfea

Allenrolfea is a monotypic plant genus containing the single species Allenrolfea occidentalis, the iodine bush. This is a low-lying shrub of the Southwestern United States, California, Idaho, and northern Mexico.

It grows in sandy, often salty, distinctly alkaline soils, such as desert washes and saline dry lakebeds. It is a common halophyte member of the alkali flat ecosystem.