Tetracoccus hallii

Tetracoccus hallii is a species of flowering shrub in the family Picrodendraceae, known by the common names Hall's shrubby-spurge and Hall's tetracoccus. It is native to the deserts around the intersection of California, Nevada, and Arizona in the United States and Baja California, Mexico. It grows in many types of desert habitat. It is abundant and widespread in Joshua Tree National Park in California. It is a bushy, branching shrub, hairless in texture except for the new twigs, which have rough hairs. The small leaves occur in clusters along the branches, each leathery, teardrop-shaped leaf measuring just a few millimeters long. The plant is dioecious, with male and female individuals producing different types of flowers. The staminate flowers occur in clusters, each flower with 4 to 6 rounded sepals and 4 to 8 erect stamens. The pistillate flower occurs singly and produces a rounded, woolly fruit with usually three chambers. The fruit is around a centimeter long when mature and contains one or two seeds per chamber.