|Natural distribution of the Monterey Pine (http://evolution.berkeley.edu/evolibrary/article/montereypines_01)|
Our food supply is vulnerable to disruption from any number of diseases and disorders: such things as fungi, bacteria or viruses could kill off vast sectors of our agricultural products because they are genetically homogeneous. The currently favored banana variety, for instance, may be wiped out in just a few years by a fungus.
The native groves of Monterey Pine are under environmental assault, from development pressures, and from disease. The Pitch Canker fungus weakens the trees, making them susceptible to beetle attack. There is not much in the way of a coordinated treatment for the trees. None of the native groves are on protected federal land, and only one grove is within a state park. For the most part the native groves exist at the pleasure of the private corporations that own the land.
Strangely enough, the Monterey Peninsula plays hosts to more than one extremely rare native forest. The Monterey Cypress (Hesperocyparis macrocarpa) is found in natural groves only at Cypress Point on the peninsula, and at Point Lobos State Reserve. The trademarked tree called the "Lone Cypress" is perhaps the most famous single tree in the California (I think the sadly deceased Jeffrey Pine on the summit of Sentinel Dome in California was a close competitor for the honor). Like the pine, it has become widespread due to planting as an ornamental.