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PNW Pines ( Pinus ) - PowerPoint PPT Presentation
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PNW Pines ( Pinus ). Pines. About 115 species Native to most of the Northern Hemisphere Evergreen, coniferous Mostly trees, rarely bushes 3-80m tall Tallest is a Ponderosa Pine located in Southern Oregon. Pine Ecology. Grow well in acidic soils. Well drained Sandy Soils
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Pines
- About 115 species
- Native to most of the Northern Hemisphere
- Evergreen, coniferous
- Mostly trees, rarely bushes
- 3-80m tall
- Tallest is a Ponderosa Pine located in Southern Oregon
Pine Ecology
- Grow well in acidic soils.
- Well drained Sandy Soils
- Can tolerate extreme conditions due to elevation and latitude
- Bishop Pines need fire to regenerate
Uses
- Used largely as timber
- Furniture, homes
- Resin is used for turpentine
- Used as ornamental plants
- Used for pine nuts
Lodgepole Pine
- Needles: Two needles per bundle (clustered); 1-3" long; commonly twisted (contorted).
- Fruit: Small, egg-shaped cones (1-2" long), often with a prickle at the end of each scale. May remain closed on the tree for years.
- Bark: Thin, dark, and flaky.
Ponderosa Pine
- Needles: bundles of 3, 5-10 inches long; held for only 2-3 years.
- Fruit: Egg-shaped cone; 3-5 inches long (much smaller than Jeffrey pine cones); each scale has a straight, stiff prickle that sticks out.
- Bark: Flakes off in shapes like jigsaw puzzle pieces. Older trees have a distinct yellow or orange color (not red like Jeffrey pine).
Jeffery Pine
- Needles: bundles of 3, 5-10 inches long; often "bushy" along twig. Last 5-8 years on tree.
- Fruit: Large, woody cones; 5-12 inches long (much larger than ponderosa pine cones); each scale has a curved (J-shaped) prickle that curves inward.
- Bark: Flakes off in jigsaw puzzle-like pieces. Older bark is distinctly reddish-brown (not as orange as ponderosa pine)
Western White Pine
- Needles: Occur in bundles of 5; 2-4 inches long; white lines on 2 sides of each 3-sided needle.
- Fruit: Woody cones, 5-12 inches long. slender and curved. Cone scales are thin and often curve up on the end.
- Bark: Dark; broken into small squares or rectangles on older trees (smooth on young trees). Bark often "ringed" where a whorl of branches once grew
White-bark Pine
- Needles: Occur in bundles of 5; 1-3 inches long; faint, white lines on all surfaces.
- Fruit: Small, woody cones, 2-3 inches long; nearly round; thick cone scales with no prickles.
- Bark: Thin, scaly, and grayish throughout its life
