IUCN threat status:

Least Concern (LC)

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Pinaceae -- Pine family

    James L. Jenkinson

    Jeffrey pine (Pinus jeffreyi) was discovered in 1852 in the  Shasta Valley of California by John Jeffrey, a Scottish botanical  explorer. Partly overlapping ponderosa pine (Pinus ponderosa) in  range and superficially resembling it, Jeffrey pine was first classified  as a variety of ponderosa pine (28,45). These western yellow pines produce  wood of identical structure and quality and are closely related  taxonomically (10). Jeffrey pine is distinct chemically, ecologically, and  physiologically and is readily distinguished from ponderosa pine on the  basis of bark, leader, needle, bud, and cone morphology (23).


Creative Commons Attribution Non Commercial 3.0 (CC BY-NC 3.0)

James L. Jenkinson

Source: Silvics of North America

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