Status: Native
Synonyms:
Pinus arizonica Engelmann
Pinus ponderosa var. arizonica has four five leaves (needles) in most bundles, rather than three as in Pinus ponderosa var. scopulorum which is more common in the Gila National Forest. In addition, the bud is only slightly resinous in Pinus ponderosa var. arizonica, while it is very resinous in Pinus ponderosa var. scopulorum. The two varieties are found together on Signal Peak, and both harbor Arceuthobium vaginatum subsp. cryptopodum.
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Pinus ponderosa var. arizonica, photo Russ Kleinman, Pinos Altos Range, Signal Peak, April 27, 2009
Pinus ponderosa var. arizonica, less resinous bud, photo Russ Kleinman, Pinos Altos Range, Signal Peak, April 27, 2009
Pinus ponderosa var. arizonica, 5 leaves per fascicle, photo Russ Kleinman, Pinos Altos Range, Signal Peak, April 27, 2009
Pinus ponderosa var. arizonica, bark, photo Russ Kleinman, Pinos Altos Range, Signal Peak, April 27, 2009
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