Jatropha cuneata  ( ) ( ) Euphorbiaceae This shrub is abundant and widespread in the Gulf of California region, including most of the major islands. It ranges from the Guaymas area northward into southwestern Arizona, and extends through most of the peninsula of Baja California. It is characteristic of arid places, and is often abundant on hot, dry, south or west-facing slopes. It is common throughout all of the territory of the various Seri groups. It is a semi-succulent and multiple-stemmed shrub, commonly reaching 1 to 2 m in height. Each shrub has a number of large, radiating, and carrot-shaped roots, up to about 10 cm in diameter. The roots and lower stems exude copious blood-like sap when cut. The stems are flexible, the wood very soft, and the foliage drought-deciduous. The sensitivity of this species to freezing weather limits its northern range. Relatively rapid stem growth may occur with the summer-fall rains. After being cut, such...