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Pinus attenuata

Common Name:  Knobcone Pine
Family: Pinaceae 
  

Collection Number:  116.
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/

 

 

 


This page was created by: Keith Rice, Muhlenberg College, Jeff Chichester Northampton Community College
For questions or concerns regarding the Graver Web site, contact lrosen@muhlenberg.edu
Last updated 03/16/05