Jefferey Pine 2010

Jefferey Pine Bark 2000

Jefferey Pine Needles 2000

Young Jefferey Pine 2010

Jefferey Pinecone 2000

The Pinus Jeffreyi is commonly known as Jeffrey Pine,

Jeffery pine has blue-green, twisted needles, 7-9 in. long. Grows from 40-90 ft. with a pyramidal, open crown. Old trees are devoid of branches for more than 1/2 of their height. Cinnamon-brown to yellow-orange, flaky bark. Cones are 6-9 in. long. Large tree with straight axis and open, conical crown of spreading branches and with large cones. Both bark and twigs give off odor of lemon or vanilla when crushed.

The odor of crushed twigs defies exact description. The scent has been likened not only to lemons and vanilla, but also to violets, pineapples, and apples. This species was named for its discoverer, John Jeffrey, the 19th century Scottish botanical explorer who collected seeds and plants in Oregon and California for introduction into Scotland.

Jeffrey pine wood is similar to ponderosa pine wood, and is used for the same purposes. The exceptional purity of n-heptane distilled from Jeffrey pine resin led to n-heptane being selected as the zero point on the octane rating scale of petrol.

As it mainly consists of n-heptane, Jeffrey pine resin is a poor source of turpentine. Before Jeffrey pine was distinguished from ponderosa pine as a distinct species in 1853, resin distillers operating in its range suffered a number of 'inexplicable' explosions during distillation, now known to have been caused by the unwitting use of Jeffrey pine resin.

Sourced:
http://www.treesofnorthamerica.net/trees/Jeffrey+Pine
http://www.wildflower.org/plants/result.php?id_plant=PIJE
https://en.wikipedia.org/wiki/Jeffrey_pine

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