Pinus radiata (family Pinaceae) is known in English as Monterey Pine in some parts of the world (mainly in the USA, Canada and the British Isles), and Radiata Pine in others (primarily Australia, New Zealand).
It is a species of pine native to coastal California in three very limited areas in Santa Cruz, Monterey and San Luis Obispo Counties, and (as the variety Pinus radiata var. binata, Guadalupe Pine) on Guadalupe Island and (possibly separable as var./ssp. cedrosensis) Cedros Island off the west coast of Baja California, Mexico. It is also extensively cultivated in many other warm temperate parts of the world.
P. radiata grows to between 15-30 m in height in the wild, but up to 60 m in cultivation in optimum conditions, with upward pointing branches and a rounded top. The leaves ('needles') are bright green, in clusters of three (two in var. binata), slender, 8-15 cm long and with a blunt tip. The cones are 7-17 cm long, brown, ovoid (egg-shaped), and usually set asymmetrically on a branch, attached at an oblique angle. The bark is fissured and dark grey to brown.
It is closely related to Bishop Pine and Knobcone Pine, hybridizing readily with both species; it is distinguished from the former by needles in threes (not pairs), and from both by the cones not having a sharp spine on the scales.
On Guadalupe Island, var. binata is critically endangered. Most of the population was destroyed as when tens of thousands of feral goats ate each and every seedling that germinated since the mid-19th century, the old plants dying off by and by. The population stood at one hundred in 2001-02. With the removal of goats essentially complete after 2005, hundreds of young Guadalupe Pines have started to grow up in habitat fenced after 2001, the first time this has happened in 150 years or so. Accidental introduction of Pitch Pine Canker to Guadalupe is considered the biggest threat to the population's survival at present.
In areas such as New Zealand this tree has become naturalized, and is considered an invasive weed where it has escaped from plantations.
Volatile organic compounds emissions from radiata pine MDF as a function of pressing variables.(medium density fiberboard)
Jul 01, 2006; Abstract This research was performed to investigate the effects of press temperature, press time, and resin content on the...