Pinus longaeva oldest living individual tree Bristlecone Pine Bristlecone pine Great Basin Bristlecone Pine Great Basin Bristlecone Pine Pinus longaeva Great Basin Bristlecone Pine Bristlecone Pines en:Great Basin Bristlecone Pine pinos Bristlecone Bristlecone Pines oldest living individual tree Great Basin Bristlecone Pine Bristlecone Pine oldest living individual tree Pinus longaeva Great Basin Bristlecone Pine Bristlecone Pines