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The Flora of Mount Shasta

Knobcone Pine

Pine Family (Pinaceae) Pinus attenuata
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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.

Knobcone Pine © 2001 Ken and Leona Beatty Knobcone Pine © 2001 Ken and Leona Beatty
Knobcone Pine
© 2001 Ken and Leona Beatty

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