There are, in fact, many members of the Pistacia genus, but only Pistacia vera produces pistachio nuts, which are edible for humans. The remainder of the species is used for oil, timber production ...

Pistachios are high in protein, fiber, and antioxidants. Members of the Pistacia genus also include cashew nut, mango, sumac, and poison ivy. A 1-ounce serving (49 kernels) of pistachios contains ...