ABSTRACT
The Joshua tree is one of the most characteristic plants of the Mojave Desert, and extends southward to the Sonoran Desert. The Joshua tree grows from southern California, Mexico, and western Arizona eastward into southern Nevada and southwestern Utah, at elevations of 450-2200 m. Joshua trees grow in areas periodically subjected to fire, and the plants have numerous specialized adaptations to survive fire. The flaky alligator-like bark of older trunks serves as insulation against fire. The height of older trees protects the growing points, which are high above the low vegetation that tends to burn. The Joshua tree relies solely on the yucca moth for pollination. Flying at night, the moth is attracted to the white blossoms of the plant. The unique appearance of the Joshua tree makes it a very desirable ornamental. The Joshua tree has been a minor wild food source since prehistorical times. Native Americans roasted and ate the flower buds.
