The Flora of Mount Shasta
Knobcone PinePine Family (Pinaceae) Pinus attenuata
Growth Form: Generally a squat, bushy appearance, 30 to 80 feet, trunk may be forked; lowest branches often only a few feet above the ground; occasionally grows in dense stands of tall slender trees resembling Lodgepole Pine.
Leaves: Evergreen; needles in bundles of 3, 3 to 8 inches
Bark: Gray and smooth on upper trunk and younger trees, turning dark gray-brown and fissured with age
Cones: 3 1/2 to 7 inches; curved and asymmetrical at base; cones remain closed and in whorls usually for the life of the tree.
Found: Dry, rocky, low nutrient soils including serpentine; open sunny areas
Tidbits: This tree is considered to be a fire-climax species as the cones do not open until the tree is killled by fire. After the fire, the cones begin to open to release seed into cooled mineral soil.
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