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Araucarioxylon arizonicum (alternatively Agathoxylon arizonicum) is an extinct species of conifer that is the state fossil of Arizona. [1] The species is known from massive tree trunks that weather out of the Chinle Formation in desert badlands of northern Arizona and adjacent New Mexico, most notably in the 378.51 square kilometres (93,530 acres) Petrified Forest National Park. [2]
The Summary. Increasingly frequent and severe heat waves in the Southwest are damaging some desert plants known for thriving in harsh conditions.
The Sonoran Desert. The Sonoran Desert is a North American desert and ecoregion which covers large parts of the southwestern United States and of northwestern Mexico. With an area of 260,000 square kilometers (100,000 sq mi), it is the hottest desert in Mexico. The western portion of the Mexico–United States border passes through the Sonoran ...
The Arboretum at Arizona State University is an arboretum located in small exhibit sites scattered across walkways and open areas throughout the campus of the Arizona State University in Tempe, Arizona. [1] [2] All of the sites are open to the public daily without charge, since the campus' public areas are not shut off from city streets.
This is a landscape of steep mountains and high stony plateaus with rocky outcrops from the Kaibab Plateau in northern Arizona south to the Mogollon Plateau, extending eastwards into southwestern New Mexico and into the Trans-Pecos region of West Texas. Elevations range from 1,370 to 3,000 meters (4,490 to 9,840 ft), with some peaks higher than ...
The desert ironwood (Olneya tesota) is a very long-lived tree, with some specimens estimated to be more than 800 years old. [4] Desert ironwood is a keystone species because it provides a nursery environment of shade and protection that enables young seedlings of other species to become established despite the harsh desert climate, where ...
A Joshua tree in Juniper Hills is engulfed by the Bobcat fire in 2020. Wildfires, along with climate change and habitat loss, are taking an increasing toll on Joshua trees in California.
Flora of the Arizona Upland includes higher elevation Sonora Desert plants that require more moisture and cooler climates than those of the adjacent Sonoran Desert areas in the Colorado Desert of the lower Colorado River valley area, and which can withstand frost, unlike plants of the Sonoran Desert south of the border between the United States and Mexico.