Creosote Bush

Description

Larrea tridentata, called creosote bush and greasewood as a plant, chaparral as a medicinal herb, and gobernadora (Spanish for "governess") in Mexico, due to its ability to secure more water by inhibiting the growth of nearby plants. In Sonora, it is more commonly called hediondilla; Spanish hediondo = "smelly". It is a flowering plant in the family Zygophyllaceae. The specific name tridentata refers to its three-toothed leaves. Larrea tridentata is a prominent species in the Mojave, Sonoran, and Chihuahuan Deserts of western North America, and its range includes those and other regions in portions of southeastern California, Arizona, southern Nevada, southwestern Utah, New Mexico, and Texas in the United States, and Chihuahua, Sonora, Coahuila, Nuevo León, Zacatecas, Durango and San Luis Potosì in Mexico. The species grows as far east as Zapata County, Texas, along the Rio Grande southeast of Laredo near the 99th meridian west. Larrea tridentata is an evergreen shrub growing to 1 to 3 m (3 to 10 ft) tall, rarely 4 m (13 ft). The stems of the plant bear resinous, dark green leaves with two opposite lanceolate leaflets joined at the base, with a deciduous awn between them, each leaflet 7 to 18 mm (1⁄4 to 11⁄16 in) long and 4 to 8.5 mm (5⁄32 to 11⁄32 in) broad. The flowers are up to 25 mm (1 in) in diameter, with five yellow petals. Galls may form by the activity of the creosote gall midge. The whole plant exhibits a characteristic odor of creosote, from which the common name derives. In the regions where it grows, its smell is often associated with the "smell of rain". Larrea is a genus of flowering plants in the caltrop family, Zygophyllaceae. It contains five species of evergreen shrubs that are native to the Americas. The generic name honours Bishop Juan Antonio Hernández Pérez de Larrea, a patron of science. South American members of this genus are known as jarillas and can produce fertile interspecific hybrids. One of the more notable species is the creosote bush (L. tridentata) of the southwestern United States and northwestern Mexico. The King Clone ring in the Mojave Desert is a creosote bush clonal colony estimated to be about 11,700 years old.