According to Guinness World Records, the oldest tree species in the world are the bristlecone pines, found in the White Mountains in California. Their scientific name is “Pinus Longaeva." ...

The world's oldest living tree is "Methuselah." The tree's exact age is unknown, but experts believe it has been alive for close to 5,000 years, the U.S. Forest Service told USA TODAY in an email.