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File:Pinus benthamiana 08314.JPG - Wikimedia Commons
Pinus ponderosa - Wikipedia
File:Ponderosa Pine branch-750px.JPG - Wikipedia
File:Pinus ponderosa female cones.JPG - Wikimedia Commons
Pinus herrerae - Wikipedia
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File:Pinus ponderosa (ponderosa pine) 11 (27664019999).jpg - Wikimedia Commons
Tree Identification
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File:Pinus ponderosa 3.JPG - Wikimedia Commons