Mesquite in Hidden Spring Wash

With young fanglomerates, related to movement on the San Andreas Fault, in the background. The mesquites, genus Prosopsis, are probably either P. glandulosa, honey mesquite, or P. pubescens, screwbean mesquite, based on the area of occurrence. Mesquite is commonly parasitized by the desert mistletoe (Phoradendron californicum), which makes the brownish clusters of twigs among the green mesquite branches. The inset shows a close-up of a mistletoe infestation on a separate individual. Orocopia Mountains Wilderness Area, California.