Linked from
The 8 pages that link to Pinus longaeva, each with the reason it gives.
DendrochronologyRelated: Their exceptionally long lifespans preserve unusually long ring records.
Needle (botany)Broader topic: Its short needles persist for years in cold, exposed habitats.
Great Basin DesertBroader topic: It survives in the desert’s cold, high mountain environments.
Old TjikkoRelated: Its ancient individual trunks provide a contrasting model of tree longevity.