An exotic fungus spreading southward through Rocky Mountain forests is threatening Colorado’s oldest trees — the gnarled limber and bristlecone pines that can live longer than 2,000 years.

The Rocky Mountain bristlecone pine is found only in Colorado, New Mexico and Arizona, so their ranges do not overlap at all. The Great Basin bristlecone pine is longer living and claims the title of ...

510 BCE: Rising from a mountain’s shallow soil, a bristlecone pine begins its life. This Rocky Mountain bristlecone pine is one of the oldest trees in the world, only outlived by its cousin the Great ...

Rocky Mountain Bristlecone Pine (Pinus aristata) Where: Living at high altitude on arid, windswept mountain slopes of Colorado, New Mexico and Arizona, as many as a dozen of these trees have been ...

A few things on this planet are old enough to make history books look recent, and that includes some living trees that have ...

The Rocky Mountain bristlecone pine is famous for its longevity. The oldest known living specimen, near Pikes Peak, is 2500 years old. Native to Colorado, Bristlecone pines grow in some of the ...

The Rocky Mountain bristlecone pine is in Colorado, New Mexico and Arizona. The Sierra foxtail pine grows in California. In the White Mountains, ...

Great Basin Bristlecone Pines are found among the high mountain regions of California and Nevada, while the Rocky Mountain Bristlecone Pine grows in smaller groves in Colorado, New Mexico and Arizona.

Rocky Mountain bristlecone pine is a native conifer found in Colorado, New Mexico and Arizona from 7,000 feet to tree line in montane and subalpine life zones.

The West's ancient and resilient bristlecone pines have appeared immune to bark beetle infestations devastating conifer forests. That changed when bristlecones began dying in Utah's Wah Wah Mountains.

An exotic fungus spreading southward through Rocky Mountain forests is threatening Colorado`s oldest trees — the gnarled limber and bristlecone pines that can live longer than 2,000 years. White ...