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Common Name: Knobcone Pine
Family:
Pinaceae
Entry Author: Jeff Chichester.
Description: Straight trunk, conical crown.
Needles: Four to five in. length in bundles of three.
Cones: Four to six inches in length asymmetrical base.
Bark: Purple-brown to dark-brown.
Branching Pattern: Ascending slender shoots.
Height: Up to forty ft.
Life Span: Up to eighty years.
Conditions/Habitat/Kind of Forest: Typically found in woodlands at higher elevations.
Range: Northern California to Southern Oregon, United States, also found in Baja California, Mexico.
Ecological Interactions: Western Gray Squirrel consume seeds, Jays also eat from open cones. Pinus attenuata is susceptible to contracting Pitch Cancer, which is a fungus spread by insects that results in a form of resinous cankers located on trunk and branches.
References:
Dendrology at Virginia Tech.
http://cnr.vt.edu/dendro/dendrology/main.htm
University of Bonn.
http://www.botanic.uni-bonn.de/conifers/pi/pin/attenuata.htm
USDA Forest Service
http://www.fs.fed.us/database/feis/index.html
Pitch Canker Task Force
http://frap.cdf.ca.gov/pitch_canker/
