Knobcone Pine is defined by its remarkable cones, which are asymmetrical, strongly reflexed, and held in tight whorls around the trunk and main branches — sometimes encased in bark as the tree grows around them. The cones are strongly serotinous, remaining sealed for decades until fire melts the resin. After a stand-replacing fire, serotinous cones release a massive pulse of seeds. The species grows in dry, rocky, often serpentine soils where other trees struggle, and fire is an essential part of its ecology.
Habitat
Dry rocky slopes, serpentine outcrops, and chaparral-forest margins in the Sierra Nevada foothills and California Coast Ranges.
Diet
Seeds consumed by scrub-jays and small rodents after fire events open the serotinous cones.
How common
Uncommon
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