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Old growth longleaf pine stand, scorched by fire (top); longleaf pine stand after timber removal (bottom) Before European settlement, longleaf pine forest dominated as much as 90,000,000 acres (360,000 km 2) stretching from Virginia south to Florida and west to East Texas. Its range was defined by the frequent widespread fires that were lit by ...
Mature Pinus pinea (stone pine); note umbrella-shaped canopy: Pollen cones of Pinus pinea (stone pine): A red pine (Pinus resinosa) with exposed rootsYoung spring growth ("candles") on a loblolly pine
Cones of all species have thick scales, and all except those of P. pinea open at maturity. Species in this section are native to Europe, Asia, and the Mediterranean, except for P. resinosa in northeastern North America and P. tropicalis in western Cuba. [6] Subsection Incertae sedis †P. driftwoodensis – Early Eocene, British Columbia ...
The longleaf pine ecosystem is a fire climax community, that is "a plant and animal community that is limited by and adapted to an early successional stage by frequent fire disturbances". [9] Fire destroys other pine species and hardwoods which would outcompete the longleaf pines. [7]
I do not remember ever thinking about pinecones being a crop, nor about a fluctuation in the number of pinecones from year to year.
For example, the bark of a loblolly tree is slightly darker, thicker, and more furrowed and rigged in comparison to the shortleaf pine at the beginning of its lifespan, but when it starts maturing these differences fade; however, the resin pockets are still visible on shortleaf pine and can used for identification.
Jeffrey pine wood and ponderosa pine wood are sold together as yellow pine. [6] Both kinds of wood are hard (with a Janka hardness of 550 lbf (2,400 N)), but the western yellow pine wood is less dense than southern yellow pine wood (28 lb/cu ft (0.45 g/cm 3 ) versus 35 lb/cu ft (0.56 g/cm 3 ) for shortleaf pine).
State federal district or territory Common name Scientific name Image Year Alabama: Longleaf pine: Pinus palustris: 1949 clarified 1997 [1]: Alaska: Sitka spruce: Picea sitchensis