Editing Pinus aristata (section)

===Longevity===
Though they do not obtain the extreme age of the Great Basin bristlecone pines, Colorado bristlecones still reach quite advanced ages. There are 13 trees that are known to be older than 1600 years by reliable dating, including one on Mount Goliath dated to the year 403. Four of these trees exceed 2100 years of age and one is {{age|-441|5|1}} years old (see [[#Notable trees|Notable trees]]). Based on size and appearance scientists estimate there are 30 more trees in the same general area older than 1600 years that have not yet had core samples taken.<ref name="Brunstein" /> The botanist [[Aljos Farjon]] thinks that there may be trees that are older 3000 years of age that have yet to be scientifically scrutinized.<ref name="Farjon" /> At lower elevations in montane habitats where they grow with grasses, ages generally do not exceed 300 years.<ref name="FEIS">{{cite web |last1=Fryer |first1=Janet L. |title=''Pinus aristata'' |url=https://www.fs.fed.us/database/feis/plants/tree/pinari/all.html |website=Fire Effects Information System |publisher=U.S. Department of Agriculture, Forest Service, Rocky Mountain Research Station, Fire Sciences Laboratory |access-date=22 July 2024 |archive-url=https://web.archive.org/web/20220628095019/https://www.fs.fed.us/database/feis/plants/tree/pinari/all.html |archive-date=28 June 2022 |language=en |date=2004}}</ref>

The Rocky Mountain bristlecone is known both for having stripes of dead wood on the trunks of older trees and for the extreme lengths of time that dead trees will remain sound. In this it is very much like the Great Basin bristlecone.<ref>{{cite journal |last1=LaMarche |first1=Valmore C. |last2=Mooney |first2=Harold A. |title=Recent Climatic Change and Development of the Bristlecone Pine (P. longaeva Bailey) Krummholz Zone, Mt. Washington, Nevada |journal=Arctic and Alpine Research |date=1972 |volume=4 |issue=1 |pages=61–72 |doi=10.2307/1550214 |jstor=1550214 |url=https://www.jstor.org/stable/1550214 |access-date=28 August 2024 |issn=0004-0851|url-access=subscription }}</ref>